Load bar mounting assembly

• US 4,411,325 A
• Filed: 03/08/1982
• Issued: 10/25/1983
• Est. Priority Date: 03/08/1982
• Status: Expired due to Fees

• Current Assignee: Eaton Corp. (Wisconsin) (Eaton Corporation PLC.)
• Original Assignee: Eaton Corp. (Wisconsin) (Eaton Corporation PLC.)
• Inventors: Hamilton, Martin W.
• Primary Examiner(s): Hartary, Joseph W.
• Application Number:
  US06/355,706
• Time in Patent Office: 596 Days
• Field of Search: 177/136, 177/211, 177/DIG. 9, 177/246, 73/862.65
• US Class Current: 177/136
• CPC Class Codes: G01G 21/07 of flexure-plate bearings
• CPC Class Codes: G01G 21/23 Support or suspension of weighing platforms G01G21/24 takes precedence
• CPC Class Codes: G01G 3/1402 Special supports with preselected places to mount the resistance strain gauges; Mounting of supports
• CPC Class Codes: Y10S 177/09 Scale bearings

Abstract

A plurality of load bar assemblies (14) are connected between a supported structure (10) and a supporting structure (12) for determining an amount of load in the supported structure. Each load bar assembly includes a load bar (20) having a middle portion (22) connected with the supported structure and end portions (24, 26) connected by load bar mounting assemblies (34) with the supported structure. Each load bar mounting assembly includes a fulcrum member (50) which supports the load bar end portion on a fulcrumming surface (54). An elongated connecting structure (60) having an enlarged upper portion (64) extends through a load bar end portion aperture (32) and a fulcrum member aperture (56) and is connected with the supporting structure. An annular washer (72) and a tubular sleeve (74) of resilient material are disposed between the elongated connecting structure and the load bar end portion to allow limited movement therebetween.

Claims

1. A load bar mounting assembly for mounting end portions of a load bar on a supporting structure which end portions each have a lower surface and define an aperture therethrough, the mounting assembly comprising:

a fulcrum member having a base side which is adapted to engage the supporting structure, a fulcrumming surface which is adapted to engage the end portion lower surface, and defining a fulcrum member aperture extending therethrough;

an elongated connecting means having an elongated central portion which is adapted to extend through the end portion aperture and the fulcrum member aperture, an enlarged portion adjacent one end for constraining separating movement of the end portion lower surface and the fulcrum surface, and a connecting means adjacent the other end which is adapted to be connected with the supporting structure; and

,

a resilient interconnecting means which is disposed adjacent at least a part of the elongated central portion and the enlarged portion and which is adapted to engage the load bar end portion adjacent the end portion aperture for resiliently interconnecting the load bar end portion and the elongated connecting means.

2. The load bar mounting assembly as set forth in claim 1 wherein the fulcrum member has a generally semiround transverse cross section, the fulcrumming surface being disposed substantially along the apex of the semiround cross section.

3. The load bar mounting assembly as set forth in claim 1 wherein the resilient interconnecting means includes an annular disc of resilient material disposed between the enlarged portion and the load bar end portion.

4. The load bar mounting assembly as set forth in claim 3 wherein the elongated connecting means includes a spacing means for spacing the supporting structure and enlarged portion by a distance generally equal to the height of the fulcrum member, load bar end portion, and the annular resilient disc.

5. The load bar mounting assembly as set forth in claim 4 wherein the spacing means is a tubular sleeve extending between the supporting structure and the enlarged portion.

6. The load bar mounting assembly as set forth in claim 5 wherein the resilient interconnecting means further includes an annular sleeve of resilient material disposed between at least a portion of the tubular spacing sleeve and the surface of the load bar end portion which defines the end portion aperture.

7. The load bar mounting assembly as set forth in claim 6 wherein the elongated connecting means further includes a bolt, the enlarged portion includes a bolt head and rigid washer and the connecting means includes a threaded end portion of the bolt and a nut.

8. A load bar assembly comprising:

a load bar having at least first and second end portions, each end portion having a lower surface and defining a aperture therethrough, a middle portion which is adapted to be connected with a first associated structure, and a plurality of strain gauges disposed between the middle and end portions;

a fulcrum member having a base side engaging a second associated structure, a fulcrum surface engaging the end portion lower surface and defining an aperture therethrough in alignment with the end portion aperture;

an elongated connecting means having an elongated central portion extending through the end portion aperture and the fulcrum member aperture, an enlarged portion connected adjacent one end of the central portion and disposed adjacent the end portion for constraining separating movement of the end portion lower surface and the fulcrumming surface, and a connecting means adjacent the other end of the central portion for connecting the central portion with the second associated structure; and

,

a resilient interconnecting means disposed between the load bar end portion and the elongated connecting means and for resiliently interconnecting the load bar and the elongated connecting means.

9. The load bar assembly as set forth in claim 8 wherein the first associated structure is a supported structure and the second associated structure is a supporting structure.

10. The load bar assembly as set forth in claim 8 wherein the fulcrum member has a semiround transverse cross section.

11. The load bar assembly as set forth in claim 10 wherein the fulcrumming surface extends along an apex area of the semiround cross section and wherein the fulcrum aperture extends transverse through the apex area.

12. The load bar assembly as set forth in claim 8 wherein the fulcrum member has a generally triangular transverse cross section.

13. The load bar assembly as set forth in claim 8 wherein the elongated connecting means includes a spacing means for fixing the distance between the enlarged portion and the second associated structure.

14. The load bar assembly as set forth in claim 13 wherein the elongated connecting means includes a shoulder bolt and the spacing means includes a shoulder on the shoulder bolt for engaging the second associated structure.

15. The load bar assembly as set forth in claim 13 wherein the spacing means is a tubular sleeve.

16. The load bar assembly as set forth in claim 15 wherein the tubular sleeve is press fit into the fulcrum member aperture.

17. The load bar assembly as set forth in claim 13 wherein the resilient interconnecting means includes an annular sleeve of resilient material disposed between the surface of the load bar end portion which defines the end portion aperture and at least a portion of the elongated connecting means central portion.

18. The load bar assembly as set forth in claim 17 wherein the resilient interconnecting means further includes an annular disc of resilient material disposed between an upper surface of the load bar end portion and the elongated connecting means enlarged portion.

19. The load bar assembly as set forth on claim 18 wherein the elongated connecting means enlarged portion includes a rigid washer.

20. In a vehicle which includes a supported hopper structure and a wheel mounted supporting structure, a plurality of load bar assemblies connected between the hopper and supporting structure for detecting an amount of load in the hopper structure, each load bar mounting assembly comprising:

a load bar having at least first and second end portions, each end portion having a lower surface and defining a aperture therethrough, a middle portion which is adapted to be connected with the hopper structure, and a plurality of strain gauges disposed between the middle and end portions;

a fulcrum member having a base side engaging the supporting structure, a fulcrum surface engaging the end portion lower surface and defining an aperture therethrough in alignment with the end portion aperture;

an elongated connecting means having an elongated central portion extending through the end portion aperture and the fulcrum member aperture, an enlarged portion connected adjacent one end of the central portion and disposed adjacent the load bar end portion for constraining separating movement of the end portion lower surface and the fulcrumming surface, and a connecting means adjacent the other end for connecting the central portion with the supporting structure; and

,

a resilient interconnecting means disposed between the load bar end portion and the elongated connecting means for resiliently interconnecting the load bar and the elongated connecting means.