Auxiliary device for unstressed assembly of split truss

Abstract

The utility model discloses an auxiliary device for unstressed assembly of a split truss, which comprises a tool base, a T-shaped sliding block, a universal gauge stand, a dial gauge and a truss base, the truss base is arranged at the center of the upper surface of the tool base, the split truss to be assembled is arranged above the truss base, an annular sliding groove is arranged on the upper surface of the tool base, and the T-shaped sliding block is arranged in the annular sliding groove. An annular sliding groove is formed in the upper surface of the tool base, a sliding block is installed in the annular sliding groove in a sliding mode, a universal gauge stand is installed on the upper surface of the sliding block, a dial gauge is installed at the end of the universal gauge stand in a clamped mode, a receding groove is formed in the upper surface of the tool base, and a top plate is installed in an inner cavity of the receding groove in an inserted mode. The number of the sliding blocks in the annular sliding groove can be increased or decreased conveniently, the stress-free installation and adjustment requirements of different split truss structures such as 3, 4 and 6 supports can be met by increasing the number of the sliding blocks, the number of the universal gauge stands and the number of the dial gauges, meanwhile, the sliding blocks can be conveniently taken out from the receding grooves through the top plate, and when the annular sliding groove is cleaned, the number of the sliding blocks in the annular sliding groove can be adjusted conveniently. And sundries are swept to the top plate to be taken out.

Description

Technical Field

[0001] This utility model relates to the field of mechanical structure assembly and adjustment technology, specifically an auxiliary device for stress-free assembly of split trusses. Background Technology

[0002] To control weight, space cameras on the market often use truss-type support structures. However, integrated truss structures are difficult to manufacture, have a long production cycle, and are expensive. Therefore, split truss structures are now used instead.

[0003] The difficulty of split truss mechanisms lies in the fact that assembly stress often exists during the assembly process, which can have a negative impact on subsequent use. Therefore, an auxiliary device for stress-free assembly of split trusses is proposed. Summary of the Invention

[0004] The purpose of this utility model is to provide an auxiliary device for stress-free assembly of split trusses, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an auxiliary device for stress-free assembly of a split truss, comprising a tooling base and a split truss, wherein a truss base is installed in the middle of the upper surface of the tooling base, and the split truss is installed above the truss base.

[0006] The upper surface of the tooling base is provided with an annular groove. The cross-section of the annular groove is inverted T-shaped. A slider is slidably installed in the annular groove. The number of sliders is the same as the number of split trusses. A universal joint is installed on the upper surface of the slider. A dial indicator is clamped and installed at the end of the universal joint. The probe of the dial indicator is in contact with the side wall of the split truss.

[0007] The upper surface of the tooling base is provided with a clearance groove, which is connected to an annular slide groove. A top plate is inserted into the inner cavity of the clearance groove, and the top plate and the lower wall of the inner cavity of the annular slide groove are in the same horizontal plane.

[0008] Preferably, a positioning plate is installed at the center of the upper surface of the tooling base, and a slot is provided on the lower wall of the truss base. The positioning plate can be snapped into the slot. A connecting threaded hole is provided on the upper surface of the positioning plate, and a through hole is provided on the upper surface of the truss base. The through hole and the connecting threaded hole are positioned correspondingly. A connecting bolt is inserted into the through hole and can be screwed into the connecting threaded hole.

[0009] Preferably, one end of a fixing screw is mounted on the upper surface of the slider, and a ball head is mounted on the other end of the fixing screw. A connecting sleeve is mounted on the lower surface of the universal joint base. The wall of the connecting sleeve is provided with a spherical groove. The ball head is inserted into the spherical groove. A locking nut is mounted on the outer side of the fixing screw by thread rotation. The locking nut can fit against the upper surface of the tooling base.

[0010] Preferably, the side wall of the connecting sleeve is provided with a threaded hole, and a positioning screw is screwed into the threaded hole, which can fit against the side wall of the ball head.

[0011] Preferably, ball grooves are provided on both the left and right side walls of the slider, and balls are installed in the ball grooves. The balls can fit against the inner wall of the annular groove.

[0012] Preferably, a rubber washer is fitted onto the lower surface of the locking nut, and the rubber washer can fit onto the upper surface of the tooling base.

[0013] Preferably, the upper surface of the truss base is provided with truss connection screw holes, and the lower surface of the split truss is equipped with bolts. The split truss is installed above the truss base through the cooperation between the bolts and the truss connection screw holes.

[0014] Preferably, one end of a support rod is mounted on the upper surface of the top plate, and a handle sleeve is sleeved on the outer side of the other end of the support rod.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This device features a clearance groove on the outside of its annular slide groove, facilitating the addition of sliders within the groove. By increasing the number of sliders, universal joints, and dial indicators, this device can meet the stress-free assembly and adjustment requirements of different split truss structures, such as those with 3, 4, or 6 supports. Additionally, a top plate is installed within the clearance groove, allowing for easy removal of the sliders. Furthermore, during cleaning of the annular slide groove, debris is swept onto the top plate for easy removal, preventing it from interfering with the slider's movement.

[0017] In addition, the tooling base of this device has a positioning plate and connecting threaded holes, which allows the truss base to be quickly positioned and installed during installation. Attached Figure Description

[0018] Fig. 1 This is a schematic diagram of the cross-sectional structure of this utility model.

[0019] Fig. 2 This is a schematic diagram of the tooling base structure of this utility model.

[0020] Fig. 3This is a schematic diagram of the cross-sectional structure of the annular groove of this utility model.

[0021] In the diagram: 1. Tooling base, 2. Truss base, 3. Connecting bolt, 4. Split truss, 5. Bolt, 6. Dial gauge, 7. Universal gauge base, 8. Slider, 9. Annular groove, 10. Clearance groove, 11. Top plate, 12. Positioning plate, 13. Slot, 14. Connecting threaded hole, 15. Through hole, 16. Fixing bolt, 17. Ball head, 18. Connecting sleeve, 19. Spherical groove, 20. Locking nut, 21. Threaded hole, 22. Positioning screw, 23. Ball groove, 24. Ball, 25. Rubber washer, 26. Truss connecting screw hole, 27. Support rod, 28. Handle cover. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figs. 1-3 This utility model provides a technical solution: an auxiliary device for stress-free assembly of split trusses, including a tooling base 1 and a split truss 4. A truss base 2 is installed in the middle of the upper surface of the tooling base 1, and the split truss 4 is installed above the truss base 2.

[0024] The upper surface of the tooling base 1 is provided with an annular groove 9. The cross-section of the annular groove 9 is inverted T-shaped. A slider 8 is slidably installed in the annular groove 9. The number of sliders 8 is the same as the number of split trusses 4. A universal joint base 7 is installed on the upper surface of the slider 8. A dial indicator 6 is clamped and installed at the end of the universal joint base 7. The probe of the dial indicator 6 is in contact with the side wall of the split truss 4.

[0025] The upper surface of the tooling base 1 is provided with a relief groove 10, which is connected to the annular slide groove 9. A top plate 11 is inserted into the inner cavity of the relief groove 10, and the top plate 11 and the lower wall of the inner cavity of the annular slide groove 9 are in the same horizontal plane.

[0026] The slider 8 described in this article can be quickly removed from the annular groove 9 by pulling up the support rod 27 above the top plate 11 after sliding onto the top plate 11 at the clearance groove 10, so that the slider 8 can be added or removed.

[0027] Specifically, a positioning plate 12 is installed at the center of the upper surface of the tooling base 1, and a slot 13 is opened on the lower surface of the truss base 2. The positioning plate 12 can be inserted into the slot 13. A connecting threaded hole 14 is opened on the upper surface of the positioning plate 12, and a through hole 15 is opened on the upper surface of the truss base 2. The through hole 15 is positioned corresponding to the connecting threaded hole 14. A connecting bolt 3 is inserted into the through hole 15 and can be screwed into the connecting threaded hole 14.

[0028] By setting the positioning plate 12 and the slot 13, the truss base 2 can be quickly positioned during installation, making the installation faster.

[0029] Meanwhile, the cooperation between the positioning plate 12 and the slot 13 can also ensure the coaxiality between the tooling base 1 and the truss base 2.

[0030] Specifically, one end of a fixing screw 16 is mounted on the upper surface of the slider 8, and a ball head 17 is mounted on the other end of the fixing screw 16. A connecting sleeve 18 is mounted on the lower surface of the universal base 7. The wall of the connecting sleeve 18 is provided with a spherical groove 19. The ball head 17 is inserted into the spherical groove 19. A locking nut 20 is installed on the outside of the fixing screw 16 by thread rotation. The locking nut 20 can fit against the upper surface of the tooling base 1.

[0031] Specifically, the side wall of the connecting sleeve 18 is provided with a threaded hole 21, and a positioning screw 22 is screwed into the threaded hole 21. The positioning screw 22 can fit against the side wall of the ball head 17.

[0032] After adjusting the angle of the universal joint 7, the positioning screw 22 can be rotated to make it fit against the side wall of the ball head 17, thereby fixing the angle between the universal joint 7 and the ball head 17.

[0033] Specifically, ball grooves 23 are provided on both the left and right side walls of the slider 8, and balls 24 are installed in the ball grooves 23. The balls 24 can fit against the inner wall of the annular groove 9.

[0034] By setting the ball bearing 24, the slider 8 can slide more smoothly in the annular groove 9, avoiding jamming.

[0035] Specifically, a rubber washer 25 is fitted onto the lower surface of the locking nut 20, and the rubber washer 25 can fit against the upper surface of the tooling base 1.

[0036] The rubber washer 25 increases the friction between the locking nut 20 and the tooling base 1, thus ensuring that the slider 8 will not slide in the annular groove 9 after the locking nut 20 is tightened, which would cause the position of the universal base 7 and the dial indicator 6 to change and affect the measurement result of the dial indicator 6.

[0037] Specifically, the upper surface of the truss base 2 is provided with truss connection screw holes 26, and the lower surface of the split truss 4 is provided with bolts 5. The split truss 4 is installed above the truss base 2 through the cooperation between the bolts 5 and the truss connection screw holes 26.

[0038] The split truss 4 is installed on the truss base 2 by the fit between the bolt 5 and the connecting screw hole 26.

[0039] Specifically, one end of a support rod 27 is installed on the upper surface of the top plate 11, and a handle sleeve 28 is sleeved on the outer side of the other end of the support rod 27.

[0040] By providing a support rod 27 on its top plate 11, it is made easy to remove its top plate 11 from the relief groove 10.

[0041] Working principle: When in use, first connect the truss base 2 and the tooling base 1 with the connecting bolts 3 and the connecting threaded holes 14, and then place the assembled split truss 4 on the truss base 2. Next, the assembly personnel adjust and fix the various connecting links on the split truss 4. Finally, tighten and fix the bolts 5 between the corresponding holes of the split truss 4 and the truss base 2.

[0042] Adjust the direction angle of the universal joint base 7 so that the probe of each dial indicator 6 is perpendicular to the support rod of the corresponding split truss 4. Then loosen the bolts 5 between the split truss 4 and the truss base 2 to restore the split truss 4 to a free state. Observe the reading of each dial indicator 6. If the reading changes, it indicates that there is assembly stress. The greater the change in reading, the greater the stress.

[0043] At this point, the assembly personnel will adjust the various connecting links on the split truss 4 and repeat the above operation until the readings of each dial indicator 6 no longer change when the connecting screws between the split truss 4 and the truss base 2 are loosened, indicating that there is no assembly stress on the split truss 4.

[0044] By increasing or decreasing the number of sliders 8, dial indicators 6, and multimeter bases 7 in the annular groove 9 of the tooling base 1, stress-free assembly of different split trusses 4 with 3 supports, 4 supports, and 6 supports can be achieved.

[0045] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0046] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An auxiliary device for stress-free assembly of a split truss, comprising a tooling base (1) and a split truss (4), characterized in that: A truss base (2) is installed at the center of the upper surface of the tooling base (1), and the split truss (4) is installed above the truss base (2); The upper surface of the tooling base (1) is provided with an annular groove (9). The cross-section of the annular groove (9) is inverted T-shaped. A slider (8) is slidably installed in the annular groove (9). The number of sliders (8) is the same as the number of split trusses (4). A universal joint (7) is installed on the upper surface of the slider (8). A dial indicator (6) is clamped at the end of the universal joint (7). The probe of the dial indicator (6) is in contact with the side wall of the split truss (4). The upper surface of the tooling base (1) is provided with a relief groove (10), which is connected to the annular slide groove (9). A top plate (11) is inserted into the inner cavity of the relief groove (10), and the top plate (11) and the lower wall of the inner cavity of the annular slide groove (9) are in the same horizontal plane.

2. The auxiliary device for stress-free assembly of a split truss according to claim 1, characterized in that: A positioning plate (12) is installed at the center of the upper surface of the tooling base (1). A slot (13) is provided on the lower surface of the truss base (2). The positioning plate (12) can be inserted into the slot (13). A connecting threaded hole (14) is provided on the upper surface of the positioning plate (12). A through hole (15) is provided on the upper surface of the truss base (2). The position of the through hole (15) corresponds to that of the connecting threaded hole (14). A connecting bolt (3) is inserted into the through hole (15). The connecting bolt (3) can be screwed into the connecting threaded hole (14).

3. The auxiliary device for stress-free assembly of a split truss according to claim 1, characterized in that: The upper surface of the slider (8) is equipped with one end of a fixing screw (16), and the other end of the fixing screw (16) is equipped with a ball head (17). The lower surface of the universal base (7) is equipped with a connecting sleeve (18). The wall of the connecting sleeve (18) is provided with a spherical groove (19). The ball head (17) is inserted into the spherical groove (19). The outer side of the fixing screw (16) is equipped with a locking nut (20) by thread rotation. The locking nut (20) can fit against the upper surface of the tooling base (1).

4. The auxiliary device for stress-free assembly of a split truss according to claim 3, characterized in that: The connecting sleeve (18) has a threaded hole (21) on its side wall. A positioning screw (22) is screwed into the threaded hole (21) and can fit against the side wall of the ball head (17).

5. The auxiliary device for stress-free assembly of a split truss according to claim 3, characterized in that: The left and right sides of the slider (8) are provided with ball grooves (23), and ball (24) is installed in the ball grooves (23). The ball (24) can fit against the inner wall of the annular groove (9).

6. The auxiliary device for stress-free assembly of a split truss according to claim 3, characterized in that: A rubber washer (25) is fitted onto the lower surface of the locking nut (20), and the rubber washer (25) can fit onto the upper surface of the tooling base (1).

7. The auxiliary device for stress-free assembly of a split truss according to claim 1, characterized in that: The upper surface of the truss base (2) is provided with truss connection screw holes (26), and the lower surface of the split truss (4) is provided with bolts (5). The split truss (4) is installed above the truss base (2) through the cooperation between the bolts (5) and the truss connection screw holes (26).

8. The auxiliary device for stress-free assembly of a split truss according to claim 1, characterized in that: One end of a support rod (27) is installed on the upper surface of the top plate (11), and a handle sleeve (28) is sleeved on the other end of the support rod (27).

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