Turnout limiter force transmission mechanism with adjustable position

Abstract

A turnout limiter force transmission mechanism with the adjustable position comprises an A-type limiter, an A clamping plate, a B-type limiter and a B clamping plate, the A-type limiter and the B-type limiter are oppositely arranged between a stock rail and a switch rail, the force transmission mechanism further comprises an eccentric sleeve, the eccentric distance between the inner diameter and the outer diameter of the eccentric sleeve is Pmm, the eccentric sleeve is installed in a bolt installation hole, and the bolt installation hole is formed in the eccentric sleeve. The bolt is driven to move in the line direction by rotating the position of the eccentric sleeve in the bolt mounting hole, so that the A-type limiter and the B-type limiter which are connected to the bolt move synchronously, and stepless adjustment of the gap value of 0-Pmm between the A-type limiter protruding block and the B-type limiter groove is achieved. According to the force transmission mechanism, the gaps between the convex blocks of the two limiters and the side faces of the grooves can be rapidly adjusted, the problem that the maintenance workload is increased due to the fact that parts such as base plates and fasteners in long sections of a switch rail and a stock rail are disassembled conventionally is solved, and therefore the turnout maintenance time and the occupied operation time are shortened to a large extent.

Description

Technical Field

[0001] This utility model relates to the field of railway technology, and in particular to a force transmission mechanism for a position-adjustable turnout limiter. Background Technology

[0002] The switch rail consists of two parts: a free section at the front and a fixed section at the rear. The free section moves laterally under the force of the switch machine to open the straight or side track for operation. However, it is prone to longitudinal expansion and contraction due to temperature forces. The fixed section is fixed in place by pads, fasteners, and sleepers. To avoid a series of problems affecting train operation safety caused by temperature forces during track expansion and contraction, such as switch rail creep and lateral arching, stock rail deformation and hard bending, signal switching jamming, and broken connecting bolts, spacers and limiters are conventionally installed at the heel ends of the switch rail and stock rail.

[0003] The spacer has a greater capacity to transfer temperature forces. It connects the switch rail and the stock rail together with fasteners, transferring the temperature forces borne by the switch rail to the stock rail to a greater extent, thus better controlling the longitudinal expansion and contraction of the switch rail. However, the stock rail is prone to deformation and hard bending due to the large additional temperature forces, which reduces the smoothness of the track.

[0004] The limit switch has a limited ability to transmit temperature and force, as shown in the instruction manual. Figure 22-24 As shown, the base rail is equipped with a type A limiter with a protrusion at its heel end, and the switch rail is equipped with a type B limiter with a groove at its heel end. A certain gap is designed between the protrusion and the groove side to allow the switch rail to freely expand and contract longitudinally under temperature force until the gap value is reached, at which point the temperature force is transmitted to the base rail. This reduces the temperature force load on the base rail and connecting parts, preventing excessive deformation of the rail components. However, after long-term contact and interaction between the type A and type B limiters, uneven stress or limiter failure occurs on the type B limiter on the switch rail. Currently, to eliminate or mitigate uneven stress on the limiters, the gap between the two limiters needs to be adjusted. Routinely, the fasteners and limiter force transmission mechanisms in longer sections of the switch rail and base rail are disassembled to release temperature force. This increases the labor intensity and maintenance frequency of track maintenance personnel, occupies a certain amount of track operating time, and reduces track operating efficiency. This problem is particularly prominent for seamless tracks spanning multiple sections. Utility Model Content

[0005] To address the aforementioned problems, this utility model aims to provide a position-adjustable turnout limiter force transmission mechanism. This mechanism enables rapid adjustment of the gap between the protrusions and the sides of the grooves of the two limiters, avoiding the increased maintenance workload caused by disassembling pads, fasteners, and other parts in long sections of the switch rail and stock rail. This significantly reduces turnout maintenance time and operational downtime.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A position-adjustable turnout limiter force transmission mechanism includes an A-type limiter, an A-plate, a B-type limiter, and a B-plate. The A-type limiter and B-type limiter are arranged opposite to each other between the stock rail and the switch rail. Bolt mounting holes are opened in the middle of the web of the stock rail and the switch rail. The A-type limiter and A-plate, and the B-type limiter and B-plate are respectively connected to the stock rail and the switch rail by bolts passing through the bolt mounting holes and engaging with nuts. The mechanism also includes an eccentric sleeve with an eccentricity of Pmm between its inner and outer diameters. The eccentric sleeve is installed in the bolt mounting holes. By rotating the position of the eccentric sleeve in the bolt mounting holes, the bolt is moved in the track direction, thereby causing the A-type limiter and B-type limiter connected to the bolt to move synchronously, realizing stepless adjustment of the gap between the A-type limiter protrusion and the B-type limiter groove from 0 to Pmm.

[0007] Furthermore, the outer port of the eccentric sleeve extends radially outward with a limiting boss, which is flat against the outer surfaces of the A-plate and B-plate to limit the movement, so that there is a gap of 1-2 mm between the inner end of the eccentric sleeve and the A-type limiter and the B-type limiter.

[0008] Furthermore, both the Type A and Type B limiters have anti-rotation bosses around the bolt connection holes on their outer surfaces, and the bolt head is embedded in the anti-rotation boss to restrict the bolt head from rotating.

[0009] Furthermore, both the Type A and Type B limiters have anti-rotation grooves around the bolt connection holes on their outer surfaces, and the bolt head is embedded in the anti-rotation groove to restrict the bolt head from rotating.

[0010] Furthermore, a pin hole is radially formed on the end of the bolt, and a cotter pin passes through the pin hole.

[0011] Furthermore, a V-shaped notch is provided on the circumferential surface of the limiting boss, and the V-shaped notch is located on the side of the eccentric sleeve with a larger wall thickness, so that the bolt movement direction is consistent with the initial installation position of the V-shaped notch.

[0012] Furthermore, angle scale lines are provided on the outer surfaces of both the A-plate and the B-plate, and the tip of the V-shaped notch corresponds to the 0-degree mark of the angle scale line.

[0013] Furthermore, the thickness m of the limiting boss is ≥ 5mm.

[0014] The beneficial effects of this utility model are as follows: Based on the rail type of the main rail and switch rail, the force transmission mechanism is equipped with a matching eccentric sleeve at the rail web. By rotating or replacing the eccentric sleeve with different specifications, the bolt position can be moved and changed, thereby quickly adjusting the gap between the two limiter protrusions and the side of the groove. This avoids the increased maintenance workload caused by conventional methods of disassembling pads, fasteners, and other parts in longer sections of the switch rail and main rail, thus significantly reducing turnout maintenance time and operational downtime. Especially for seamless tracks with relatively high temperature stress, this force transmission mechanism facilitates the release of temperature stress and maintenance, which helps improve the smoothness and safety of the track structure.

[0015] This force transmission mechanism uses anti-rotation grooves or anti-rotation bosses to assemble with the two planes of the hexagonal head bolt, restricting the bolt head rotation and achieving the functions of preventing loosening and rotation.

[0016] A cotter pin hole is provided on the bolt to prevent the nut from falling off and from loosening and falling off under the repeated vibration of the train. Attached Figure Description

[0017] Figure 1 This is a front view of the A-type limiter of this utility model.

[0018] Figure 2 This is a top view of the A-type limiter and bolt assembly of this utility model.

[0019] Figure 3 This is a side view of the A-type limiter and the basic rail assembly of this utility model.

[0020] Figure 4 This is a front view of the A-plate structure of this utility model.

[0021] Figure 5 This is a side view of the A-plate and the basic rail assembly of this utility model.

[0022] Figure 6 This is a front view of the B-type limiter of this utility model.

[0023] Figure 7 This is a top view of the B-type limiter and bolt assembly of this utility model.

[0024] Figure 8 This is a side view of the assembly of the Type B limiter and the switch rail of this utility model.

[0025] Figure 9 This is a front view of the structure of the B-plate of this utility model.

[0026] Figure 10 This is a side view of the assembly of the B-plate and the switch rail of this utility model.

[0027] Figure 11This is a structural diagram of the bolt of this utility model.

[0028] Figure 12 This is a structural diagram of the eccentric sleeve of this utility model.

[0029] Figure 13 This utility model Figure 12 Sectional view along line C.

[0030] Figure 14 This utility model Figure 12 Sectional view along the middle D direction.

[0031] Figure 15 This utility model Figure 12 Sectional view along line E.

[0032] Figure 16 This is a comparison diagram of the eccentricity of the eccentric sleeves for the base rail and switch rail of this utility model (the left side is the eccentric sleeve for the base rail, and the right side is the eccentric sleeve for the switch rail).

[0033] Figure 17 This is an assembly drawing of the force transmission mechanism of this utility model.

[0034] Figure 18 This utility model Figure 17 Sectional view along the middle D direction.

[0035] Figure 19 This is a schematic diagram of the working principle of the force transmission mechanism of this utility model.

[0036] Figure 20 This is a schematic diagram showing the change in the position of the bolt center after rotating the eccentric sleeve in different initial states according to this utility model.

[0037] Figure 21 An angle scale line diagram is provided for this utility model as a reference for the rotation of the eccentric sleeve.

[0038] Figure 22 This is an assembly drawing of a conventional limit switch force transmission mechanism.

[0039] Figure 23 for Figure 22 Sectional view along line C.

[0040] Figure 24 This is a schematic diagram showing the change in the gap between limiters A and B when the switch rail moves in different directions.

[0041] In the diagram: 1-basic rail; 2-point rail; 3-Type A limiter; 31-protrusion; 32-anti-rotation boss; 4-A-clamp; 5-Type B limiter; 51-groove; 6-B-clamp; 7-bolt; 7a-pin hole; 8-cotter pin; 9-nut; 10-eccentric sleeve; 102-limiting boss; 10a-V-shaped notch; 11-flat washer; f-angle scale line. Detailed Implementation

[0042] To enable those skilled in the art to better understand the technical solution of this utility model, the technical solution of this utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0043] An adjustable turnout limiter force transmission mechanism enables rapid adjustment of the gap between the protrusions and the sides of the grooves of the two limiters, avoiding the increased maintenance workload caused by conventional disassembly of pads, fasteners and other parts in long sections of the switch rail and stock rail, thereby greatly reducing turnout maintenance time and downtime.

[0044] An adjustable turnout limiter force transmission mechanism includes an A-type limiter 3, an A-clamp 4, a B-type limiter 5, and a B-clamp 6. The A-type limiter 3 and B-type limiter 5 are positioned opposite each other between the stock rail 1 and the switch rail 2. Bolt 7 mounting holes (not shown in the figure) are provided in the middle of the web of the stock rail 1 and the switch rail 2. Bolts 7 pass through these mounting holes and are engaged with nuts 9 to connect the A-type limiter 3 and A-clamp 4, and the B-type limiter 5 and B-clamp 6 to the stock rail 1 and the switch rail 2, respectively. Wherein, as Figure 1-3 As shown in Figure 17, the Type A limiter 3 is installed on the main rail 1 and has a protrusion 31. Its two sides are force-transmitting surfaces, which mate with the groove 51 of the Type B limiter 5. The designed gap value 'a' between the two working surfaces of the protrusion 31 and the working surfaces (side surfaces) of the groove 51 is determined based on factors such as the temperature variation range of the turnout's application environment and the characteristics of the electrical switching equipment, and is generally 7mm to 15mm. The Type A limiter 3 has two bolt 7 mounting holes concentric with the bolt 7 mounting holes on the web of the main rail 1. The hole diameter φA is 1 to 4mm larger than the bolt 7 to be mounted thereon, facilitating bolt 7 assembly and providing vertical and horizontal adjustment margins. The Type A limiter 3 is manufactured using ZG275-500, Q355, or other metal materials through casting or forging.

[0045] like Figure 18 As shown, clamp 4 (A) is installed on the base rail 1 for reinforcement. Its upper and lower parts are in close contact with the base rail 1. It has two large holes for assembly with the outer diameter of the eccentric sleeve 10 disclosed in this application (this application also enlarges the bolt 7 mounting holes on the base rail 1 to facilitate assembly with the outer diameter of the eccentric sleeve 10). The diameter of these holes is φ. 基本轨1 The outer diameter of the eccentric sleeve 10 to which it is assembled is 0.5 to 1 mm larger; the A clamping plate 4 is made of Q235 or other metal materials, preferably manufactured by machining.

[0046] like Figure 6-8As shown in Figure 17, the type B limiter 5 is installed on the switch rail 2 and has a groove 51. The two sides of the groove 51 are force-transmitting surfaces, which mate with the protrusion of the type A limiter 3. The designed gap value between the two surfaces of the groove 51 and the surfaces of the protrusion 31 is 'a'. The type B limiter 5 has two bolt 7 mounting holes concentric with the bolt 7 mounting holes on the web of the switch rail 2, with a hole diameter φ. B Can be used with φ A The hole can be the same size or slightly smaller, since the web height of switch rail 2 is usually smaller than that of basic rail 1. As long as switch rail 2 has sufficient strength, the hole can facilitate the assembly of bolt 7 and have vertical and horizontal adjustment margins. Type B limiter 5 is made of metal materials such as ZG275-500 and Q355, and is manufactured by casting or forging.

[0047] like Figure 18 As shown, the B-plate 6 is installed on the switch rail 2, serving a reinforcing function. Its upper, lower, and side parts are in close contact with the switch rail 2. It has two large holes for assembly with the outer diameter of the eccentric sleeve 10 disclosed in this application (this application also enlarges the bolt 7 mounting holes on the switch rail 2 to facilitate assembly with the outer diameter of the eccentric sleeve 10). The diameter of these holes is φ. 尖轨2 The outer diameter of the eccentric sleeve 10 to which it is assembled is 0.5 to 1 mm larger; the B clamping plate 6 is made of Q235 or other metal materials, preferably manufactured by machining.

[0048] The force transmission mechanism disclosed in this application also includes an eccentric sleeve 10, such as Figure 12-17 As shown, the eccentric sleeve 10 has an inner hole for mounting bolts 7, with an inner hole radius R. 内孔 The radius of the eccentric sleeve 10 is preferably 0.5 to 3 mm larger than that of the bolt 7 being assembled, ensuring that the bolt 7 is easy to assemble and has a certain amount of adjustment in the vertical and horizontal directions. The eccentricity between the inner and outer diameters of the eccentric sleeve 10 is P mm, and the maximum adjustment amount for the longitudinal position of the force transmission mechanism is P mm. The eccentric sleeve 10 is installed in the mounting hole of the bolt 7. By rotating the position of the eccentric sleeve 10 in the mounting hole of the bolt 7 (the center of the outer diameter of the eccentric sleeve 10 is the rotation center of the eccentric sleeve 10, that is, the distance between the center of the inner hole and the rotation center is P mm, where P is the eccentricity of the eccentric sleeve 10, which is also the maximum adjustment amount for the limiter), the bolt 7 is moved in the line direction, thereby causing the A-type limiter 3 and B-type limiter 5 connected to the bolt 7 to move synchronously, realizing stepless adjustment of the gap value between the protrusion of the A-type limiter 3 and the groove 51 of the B-type limiter 5 from 0 to P mm.

[0049] Based on the material strength and maximum yield strength of the eccentric sleeve 10, the minimum wall thickness t of the eccentric sleeve 10 is determined. Then, the radius of the eccentric sleeve 10 preferably satisfies R. 偏心套筒 =P+R 内孔 +t, where: P is the eccentricity of the eccentric sleeve 10, and t is the thinnest wall thickness of the eccentric sleeve 10.

[0050] like Figure 18 As shown, the eccentric sleeve 10 is sequentially inserted into the bolt 7 mounting holes of the A-plate 4 and the main rail 1, and the bolt 7 mounting holes of the B-plate 6 and the switch rail 2. The bolt 7 is inserted into the inner hole. When the eccentric sleeve 10 rotates in the bolt 7 mounting holes of the main rail 1 and the switch rail 2, it causes the bolt 7, the A-type limiter 3, the A-plate 4, and the bolt 7, the B-type limiter 5, and the B-plate 6 to move relative to the rail. When the eccentric sleeve 10 rotates, the position of the inner hole used to install the bolt 7 changes and adjusts accordingly.

[0051] When it is necessary to adjust the side clearance between the protrusion 31 and the groove 51 of the two limit switches on the track, loosen the bolt 7 and rotate the eccentric sleeve 10 to adjust the centerline position of the bolt 7, thereby completing the stepless adjustment of the side clearance between the protrusion 31 of the type A limit switch 3 and the groove 51 of the type B limit switch 5 from 0 to P mm. The pads, fasteners, and other parts in the longer sections of the switch rail 2 and the main rail 1 do not need to be disassembled, greatly reducing the workload of turnout maintenance and the time occupied in operation.

[0052] To facilitate the rotational adjustment of the eccentric sleeve 10, such as Figure 12-13 As shown in Figure 18, a limiting boss 102 extends radially outward from the outer port of the eccentric sleeve. This limiting boss 102 is flush with the outer surfaces of clamping plates A and B, ensuring a 1-2 mm gap between the inner end of the eccentric sleeve 10 and the type A limiter 3 and type B limiter 5. The center of the limiting boss 102 is preferably the same as the outer diameter of the eccentric sleeve 10, serving as the rotation center of the eccentric sleeve 10. The size of the limiting boss 102 is suitable for the operation of the eccentric sleeve 10 during rotation and for meeting the flange groove depth requirements after assembly with the type A limiter 3 and type B limiter 5. The thickness m of the limiting boss 102 is preferably ≥ 5 mm, and the radius of the limiting boss 102 preferably satisfies R. 限位凸台102 ≥R 偏心套筒 +5.

[0053] Bolt 7 is as follows Figure 11 As shown, bolt 7 is a high-strength hexagonal head bolt with a hole; nut 9 is a lock nut 9 that matches bolt 7.

[0054] To restrict the rotation of bolt 7, such as Figure 2 , 7 As shown, both the A-type limiter 3 and the B-type limiter 5 have anti-rotation bosses 32 around the bolt 7 connection holes on their outer surfaces. The bolt head of the bolt 7 is embedded in the anti-rotation boss 32 to restrict the rotation of the bolt head, thereby realizing the anti-loosening and anti-rotation function of the force transmission mechanism.

[0055] Preferably, both the A-type limiter 3 and the B-type limiter 5 have anti-rotation grooves (not shown) around the bolt 7 connection holes on their outer surfaces. The bolt head (two planes of the hexagonal head) of the bolt 7 is embedded in the anti-rotation groove, which can also limit the rotation of the bolt 7 and realize the anti-loosening and anti-rotation function of the force transmission mechanism.

[0056] Anti-rotation grooves or anti-rotation bosses 32 are provided at the mounting holes of bolts 7 in type A limiters 3 and type B limiters 5 to assemble with the two planes of hexagonal head bolts 7 and restrict the rotation of bolt heads 7. The width of the anti-rotation groove and the spacing of the anti-rotation bosses 32 are preferably 1mm larger than the S value of bolt heads 7, and the depth of the anti-rotation groove or the thickness of the anti-rotation bosses 32 is n≥5mm.

[0057] To prevent nut 9 from loosening and falling off due to repeated vibrations of the train, such as Figure 11 , 18 As shown, a pin hole 7a is radially formed on the end of the bolt 7, and a cotter pin 8 passes through the pin hole 7a. The cotter pin 8 adopts the cotter pin 8 of national standard GB / T91, and its length and diameter are matched with the diameter and hole of the high-strength bolt 7.

[0058] To facilitate accurate rotation of the eccentric sleeve 10 for adjusting the gap between the protrusion 31 and the groove 51, such as Figure 12 , 19 As shown, a V-shaped notch 10a is provided on the circumferential surface of the limiting boss 102. This notch is located on the side of the eccentric sleeve 10 with a larger wall thickness, ensuring that the moving direction of the bolt 7 is consistent with the initial installation position of the V-shaped notch 10a. The length of the V-shaped notch 10a is preferably greater than 2mm, used to mark the installation position of the eccentric sleeve 10. For example... Figure 19 As shown, the gap values ​​between the protrusion 31 of the A-type limiter 3 and the groove 51 of the B-type limiter 5 differ depending on the initial state (V-shaped notch facing left or right) and the angle (counterclockwise or clockwise) of the eccentric sleeve 10. Therefore, the operator can accurately adjust the gap value between the protrusion 31 and the groove 51 by using the markings on the V-shaped notch 10a. The specific adjustment operation is as follows: the adjustment direction of the bolt position movement is consistent with the initial installation position of the V-shaped notch of the eccentric sleeve; when the V-shaped notch faces left, the bolt center will move to the left regardless of whether it is rotated counterclockwise or clockwise from 0 to 180°; when the V-shaped notch faces right, the bolt center will move to the right regardless of whether it is rotated counterclockwise or clockwise from 0 to 180°.

[0059] Different rotation angles of the eccentric sleeve 10 correspond to different center positions of the bolt 7. When the eccentricity P = 4mm, the changes in the position of the bolt 7 center relative to the rotation center of the eccentric sleeve 10 are demonstrated by rotating the V-shaped notch 10a to the left, right, counterclockwise, and clockwise, respectively. See details. Figure 20 .

[0060] The eccentric sleeve 10 allows for adjustment of different gap values ​​by rotating at different angles. To further achieve precise adjustment of the gap value, such as... Figure 21 As shown, angle scale lines f are provided on the outer surfaces of both clamping plate A 4 and clamping plate B 6, and the tip of the V-shaped notch 10a corresponds to the 0 mark of the angle scale line f. When rotating the eccentric sleeve 10, using the V-shaped notch 10a as the starting point of rotation, the gap value between the protrusion and the groove 51 can be accurately determined according to the angle scale line f (by rotating the angle and...). Figure 20 (Compare with other controls)

[0061] The height h of the eccentric sleeve 10 is related to the web thickness of the switch rail 2 or the base rail 1 it is fitted with, as well as the thickness of the A-plate 4 and the B-plate 6. To avoid interference between the lower part of the eccentric sleeve 10 and the side of the A-type limiter 3 or the B-type limiter 5, such as... Figure 18 As shown, the height h of the eccentric sleeve 10 is less than the sum of the thickness of the A-plate 4 and the rail web (preferably 1-2 mm), and the sum of the thickness of the B-plate 6 and the rail web (preferably 1-2 mm). Figure 18 As shown, the 1-2mm gap between the end of the eccentric sleeve 10 and the type A limiter 3 and type B limiter 5 is achieved by the aforementioned limiting boss 102. The limiting boss 102 forms this 1-2mm gap after it comes into contact with the outer surfaces of the A-plate 4 and B-plate 6, preventing contact interference between the eccentric sleeve 10 and the type A limiter 3 and type B limiter 5. If the web thickness and clamp thickness of the switch rail 2 and the basic rail 1 are different, the height h of the eccentric sleeve 10 for the basic rail 1 and the eccentric sleeve 10 for the switch rail 2 should also be different, and h should be designed according to the rail type and clamp matching.

[0062] A flat washer 11 is preferably fitted on the bolt 7 between the nut 9 and the limiting boss 102 of the eccentric sleeve 10.

[0063] The eccentric sleeve 10 is preferably made of stainless steel, Q355 or other metal materials. Alternatively, it can be made of non-metal materials such as glass-reinforced polyamide 66. The volume should be minimized as much as possible while ensuring that the material strength meets the load requirements, so as to save materials and reduce the space occupied during installation.

[0064] The principle of this utility model is as follows: The force transmission mechanism is based on the rail type of the basic rail 1 and the switch rail 2, and a matching eccentric sleeve 10 is set at the web of the rail. When the gap between the two limiters needs to be adjusted, the bolt 7 is loosened. By rotating or replacing the eccentric sleeve 10 of different specifications, the position of the bolt 7 can be moved and changed, thereby completing the adjustment of the gap between the protrusion 31 of the two limiters and the side of the groove 51.

[0065] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Various changes and modifications may be made to this utility model without departing from its design concept and scope of protection, and all such changes and modifications shall inevitably fall within the scope of protection claimed by this utility model.

Claims

1. A position-adjustable turnout limiter force transmission mechanism, comprising an A-type limiter, an A clamping plate, a B-type limiter, and a B clamping plate, the A-type limiter and the B-type limiter being oppositely arranged between a base rail and a point rail, bolt mounting holes being formed in the middle of the web of the base rail and the point rail, and the A-type limiter and the A clamping plate, and the B-type limiter and the B clamping plate being connected to the base rail and the point rail, respectively, by means of bolts passing through the bolt mounting holes and nuts, characterized in that: Further comprise eccentric sleeve, and the eccentricity of the inner diameter and the outer diameter of the eccentric sleeve is Pmm, the eccentric sleeve is installed in the bolt mounting hole, by rotating the position of the eccentric sleeve in the bolt mounting hole, the bolt is driven to move in the line direction, and then the A type limiter and the B type limiter connected to the bolt are synchronously displaced, the gap value of the A type limiter protruding block and the B type limiter groove is 0-Pmm stepless adjustment. ​ 2. The force transfer mechanism of claim 1, wherein: The outer end of the eccentric sleeve extends outwardly by a limiting boss, and the limiting boss is flatly limited with the outer surface of the A clamping plate and the B clamping plate, so that the inner end of the eccentric sleeve has a gap of 1-2mm with the A type limiter and the B type limiter.

3. The force transfer mechanism of claim 1, wherein: The outer periphery of the bolt connection hole on the outer surface of the A type limiter and the B type limiter is provided with an anti-rotation boss, and the bolt head of the bolt is embedded in the anti-rotation boss to limit the rotation of the bolt head.

4. The force transfer mechanism of claim 1, wherein: The outer periphery of the bolt connection hole on the outer surface of the A type limiter and the B type limiter is provided with an anti-rotation groove, and the bolt head of the bolt is embedded in the anti-rotation groove to limit the rotation of the bolt head.

5. The force transfer mechanism of claim 1, wherein: A pin hole is radially formed on the end of the bolt, and an open pin is arranged in the pin hole.

6. The force transfer mechanism of claim 2, wherein: A V-shaped notch is formed on the circumferential surface of the limiting boss, the V-shaped notch is arranged on the side with larger wall thickness of the eccentric sleeve, and the moving direction of the bolt is consistent with the initial installation position of the V-shaped notch.

7. The force transmission mechanism of claim 6, wherein The outer surface of the A clamping plate and the B clamping plate is provided with an angle scale, and the tip of the V-shaped notch corresponds to the 0 scale of the angle scale.

8. The force transfer mechanism of claim 7, wherein: The thickness m of the limiting boss is greater than or equal to 5mm.

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