Auxiliary device for unstressed assembly of split truss

Abstract

The auxiliary device comprises a tool base, a T-shaped sliding block, a universal gauge stand, a dial gauge and a truss base, the truss base is installed in the center of the upper surface of the tool base, the split truss to be assembled is installed above the truss base, an annular sliding groove is formed in the upper surface of the tool base, and the T-shaped sliding block is installed 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] The invention relates to the technical field of mechanical structure assembly and adjustment, in particular to an auxiliary device for stress-free assembly of a split truss. Background Art

[0002] In order to control weight, space cameras on the market often use truss support structures. However, the integrated truss structure is difficult to process, has a long cycle and high cost, so the split truss structure is used instead. The difficulty of the split truss mechanism is that there is often assembly stress during the assembly process, which will have a negative impact on the subsequent use process. Therefore, an auxiliary device for stress-free assembly of the split truss is proposed. Summary of the invention

[0003] The object of the present invention is to provide an auxiliary device for stress-free assembly of a split truss to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention 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; An annular slide groove is provided on the upper surface of the tooling base, the cross section of the annular slide groove is inverted T-shaped, a slider is slidably installed in the annular slide groove, the number of the sliders is consistent with the number of the split trusses, a universal meter seat is installed on the upper surface of the slider, a micrometer is clamped and installed at the end of the universal meter seat, and the probe of the micrometer is in contact with the side wall of the split truss; A clearance groove is provided on the upper surface of the tooling base, the clearance groove is communicated with the 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.

[0005] 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 inserted into the slot and installed. A connecting threaded hole is provided on the upper surface of the positioning plate. A through hole is provided on the upper surface of the truss base, and the through hole corresponds to the position of the connecting threaded hole. A connecting bolt is inserted into the through hole and installed, and the connecting bolt can be screwed into the connecting threaded hole.

[0006] Preferably, one end of a fixing screw is installed on the upper surface of the slider, a ball head is installed on the other end of the fixing screw, a connecting sleeve is installed on the lower surface of the universal joint seat, a spherical groove is provided on the wall of the connecting sleeve, the ball head is inserted and installed in the spherical groove, and a locking nut is installed on the outer side of the fixing screw by threaded rotation, and the locking nut can fit with the upper surface of the tooling base.

[0007] Preferably, a threaded hole is provided on the side wall of the connecting sleeve, a positioning screw is screwed into the threaded hole, and the positioning screw can fit with the side wall of the ball head.

[0008] Preferably, both left and right side walls of the sliding block are provided with ball grooves, in which balls are installed, and the balls can fit with the inner wall of the annular sliding groove.

[0009] Preferably, a rubber gasket is fitted on the lower surface of the locking nut, and the rubber gasket can fit with the upper surface of the tooling base.

[0010] Preferably, the upper surface of the truss base is provided with truss connection screw holes, the lower surface of the split truss is installed with bolts, and the split truss is installed above the truss base through the cooperation between the bolts and the truss connection screw holes.

[0011] 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.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The device is provided with a clearance groove on the outer side of the annular chute, so that it is convenient to increase the number of sliders in the annular chute, so that the device can meet the stress-free installation and adjustment requirements of different split truss structures such as 3 supports, 4 supports, and 6 supports by increasing the number of sliders and the universal table seat and micrometer above. At the same time, the device is also provided with a top plate in the clearance groove, through which the slider can be easily taken out from the clearance groove, and when cleaning the annular chute, the debris can be swept onto the top plate for easy removal, so as to avoid the debris affecting the sliding of the slider; In addition, the tooling base of the device is provided with a positioning plate and connecting threaded holes, so that the truss base can be quickly positioned and installed during installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the cross-sectional structure of the present invention.

[0014] Figure 2 It is a schematic diagram of the structure of the tooling base of the present invention.

[0015] Figure 3 It is a schematic diagram of the cross-sectional structure of the annular chute of the present invention.

[0016] In the figure: 1 tooling base, 2 truss base, 3 connecting bolts, 4 split truss, 5 bolts, 6 micrometer, 7 universal table seat, 8 slider, 9 annular slide groove, 10 give way groove, 11 top plate, 12 positioning plate, 13 card 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 gasket, 26 truss connecting screw hole, 27 support rod, 28 handle. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-3 The present invention provides a technical solution: an auxiliary device for stress-free assembly of a split truss, comprising 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; An annular slide groove 9 is provided on the upper surface of the tooling base 1. The cross section of the annular slide groove 9 is inverted T-shaped. A slider 8 is slidably installed in the annular slide groove 9. The number of the sliders 8 is consistent with the number of the split trusses 4. A universal meter seat 7 is installed on the upper surface of the slider 8. A micrometer 6 is clamped and installed at the end of the universal meter seat 7. The probe of the micrometer 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 clearance groove 10, which is connected to the annular chute 9. A top plate 11 is inserted into the inner cavity of the clearance groove 10, and the top plate 11 and the lower wall of the inner cavity of the annular chute 9 are in the same horizontal plane; After the slider 8 provided herein slides onto the top plate 11 at the clearance groove 10 , the slider 8 can be quickly removed from the annular slide groove 9 by pulling upward the support rod 27 above the top plate 11 , so that the slider 8 can be increased or decreased.

[0019] Specifically, a positioning plate 12 is installed at the center of the upper surface of the tooling base 1, a card slot 13 is provided on the lower surface of the truss base 2, the positioning plate 12 can be inserted and installed in the card slot 13, a connecting threaded hole 14 is provided on the upper surface of the positioning plate 12, and a through hole 15 is provided on the upper surface of the truss base 2. The through hole 15 corresponds to the position of the connecting threaded hole 14, and a connecting bolt 3 is inserted and installed in the through hole 15, and the connecting bolt 3 can be screwed into and installed in the connecting threaded hole 14; By providing the positioning plate 12 and the card slot 13, the truss base 2 can be quickly positioned when the truss base 2 is installed, so that the installation is faster; At the same time, 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 .

[0020] Specifically, one end of a fixing screw 16 is installed on the upper surface of the slider 8, and a ball head 17 is installed on the other end of the fixing screw 16. A connecting sleeve 18 is installed on the lower surface of the universal joint seat 7. The wall of the connecting sleeve 18 is provided with a spherical groove 19. The ball head 17 is inserted and installed in the spherical groove 19. A locking nut 20 is installed on the outer side of the fixing screw 16 by screwing. The locking nut 20 can fit with the upper surface of the tooling base 1.

[0021] Specifically, a threaded hole 21 is formed on the side wall of the connecting sleeve 18, and a positioning screw 22 is screwed into the threaded hole 21, and the positioning screw 22 can fit the side wall of the ball head 17; After the angle of the universal meter seat 7 is adjusted, the positioning screw 22 can be rotated to make the positioning screw 22 fit with the side wall of the ball head 17, so as to fix the angle between the universal meter seat 7 and the ball head 17.

[0022] Specifically, the left and right side walls of the slider 8 are provided with ball grooves 23, and the ball grooves 23 are provided with balls 24, and the balls 24 can fit with the inner wall of the annular slide groove 9; By providing the ball bearings 24 , the slide block 8 can slide more smoothly in the annular slide groove 9 , thereby avoiding the occurrence of a jamming phenomenon.

[0023] Specifically, a rubber washer 25 is fitted on the lower surface of the locking nut 20, and the rubber washer 25 can fit on the upper surface of the tooling base 1; The provision of the rubber gasket 25 can increase the friction between the locking nut 20 and the tooling base 1, thereby ensuring that after tightening the locking nut 20, its slider 8 will not slide in the annular groove 9, causing changes in the positions of the universal meter base 7 and the micrometer 6, thereby affecting the measurement results of the micrometer 6.

[0024] Specifically, the upper surface of the truss base 2 is provided with a truss connection screw hole 26, and the lower surface of the split truss 4 is installed with a bolt 5, and the split truss 4 is installed above the truss base 2 through the cooperation between the bolt 5 and the truss connection screw hole 26; The split truss 4 is installed on the truss base 2 through the cooperation between the bolts 5 and the connecting screw holes 26 .

[0025] Specifically, one end of a support rod 27 is mounted on the upper surface of the top plate 11, and a handle 28 is sleeved on the outer side of the other end of the support rod 27; By arranging a support rod 27 on the top plate 11 , it is convenient to take the top plate 11 out of the clearance groove 10 .

[0026] Working principle: When in use, first connect the truss base 2 and the tooling base 1 through the matching between the connecting bolts 3 and the connecting threaded holes 14, and then place the split truss 4 on the truss base 2 after assembly. Then, the installation personnel adjust the various connection links on the split truss 4 and fix them, and finally tighten and fix the bolts 5 between the corresponding holes of the split truss 4 and the truss base 2; Adjust the direction angle of the universal meter seat 7 so that the probe needle of each micrometer 6 is vertically pressed against the support rod of the corresponding split truss 4, loosen the bolt 5 between the split truss 4 and the truss base 2, and restore the split truss 4 to a free state. Observe the reading of each micrometer 6. If the reading changes, it means that there is assembly stress, and the greater the reading change, the greater the stress. At this time, the installation personnel adjust the various connecting links on the split truss 4 and repeat the above operations until the readings of the micrometers 6 no longer change when the connecting screws between the split truss 4 and the truss base 2 are loosened, indicating that the split truss 4 has no assembly stress.

[0027] By increasing or decreasing the number of slide blocks 8, micrometers 6 and multimeter bases 7 in the annular groove 9 of the tooling base 1, stress-free assembly of different split trusses 4 such as 3-support, 4-support, and 6-support can be achieved.

[0028] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes 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); An annular slide groove (9) is provided on the upper surface of the tooling base (1), the cross section of the annular slide groove (9) is inverted T-shaped, a slider (8) is slidably mounted in the annular slide groove (9), the number of the sliders (8) being the same as the number of the split trusses (4), a universal meter seat (7) is mounted on the upper surface of the slider (8), a micrometer (6) is clamped and mounted at the end of the universal meter seat (7), and a probe of the micrometer (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 clearance groove (10), the clearance groove (10) is connected to the annular slide groove (9), a top plate (11) is inserted into the inner cavity of the clearance 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 split trusses 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 through hole (15) corresponds to the position of the connecting threaded hole (14), a connecting bolt (3) is inserted into the through hole (15), and the connecting bolt (3) can be screwed into the connecting threaded hole (14).

3. The auxiliary device for stress-free assembly of split trusses according to claim 1, characterized in that: 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 table seat (7), and a spherical groove (19) is provided on the wall of the connecting sleeve (18). The ball head (17) is inserted and mounted in the spherical groove (19). A locking nut (20) is mounted on the outer side of the fixing screw (16) by screwing, and the locking nut (20) can fit with the upper surface of the tooling base (1).

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

5. The auxiliary device for stress-free assembly of split trusses according to claim 3, characterized in that: The left and right side walls of the sliding block (8) are both provided with ball grooves (23), in which balls (24) are installed, and the balls (24) can fit with the inner wall of the annular sliding groove (9).

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

7. The auxiliary device for stress-free assembly of split trusses according to claim 1, characterized in that: The upper surface of the truss base (2) is provided with truss connection screw holes (26), the lower surface of the split truss (4) is installed with bolts (5), and 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 split trusses according to claim 1, characterized in that: One end of a support rod (27) is mounted 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).

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