Pin shaft self-adapting stop device and pin shaft installation method

Abstract

The application provides a pin shaft self-adaptive stop device and a pin shaft mounting method, and belongs to the technical field of pin shaft connection. The pin shaft self-adaptive stop device comprises a main lug plate, a pin shaft, a limiting plate, a clamping stop plate and a fixing screw. The main lug plate is provided with a main lug plate shaft hole and a main lug plate fixing hole. Two limiting plates are fixed symmetrically and parallelly on the two sides of the main lug plate shaft hole and the main lug plate fixing hole. The pin shaft comprises a shaft rod and a connecting flange. The connecting flange is provided with a flange fixing hole, and the two sides of the connecting flange are provided with flange inclined surfaces. The two flange inclined surfaces are symmetrically arranged on the two sides of the shaft rod. The shaft rod penetrates through the main lug plate shaft hole, and the connecting flange is close to the main lug plate. The fixing screw penetrates through the flange fixing hole and the main lug plate fixing hole to connect the pin shaft and the main lug plate. The clamping stop plate is a wedge-shaped plate, which is inserted between the limiting plate and the connecting flange. The application has the self-compensation of clearance, realizes the self-adaptation of the pin shaft mounting position, the reliable clamping of the pin shaft and avoids the wear and failure of the main lug plate shaft hole.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of pin shaft connection, and specifically discloses a pin shaft self-adaptive stop device and a pin shaft mounting method. BACKGROUND

[0002] In the operation process of mechanical equipment, in order to prevent large pin shafts from rotating and moving out, the following ways are generally used for limiting: flange plate axial fixing way, radial small pin shaft fixing way (such as CN105257655A), and blocking pin plate clamping fixing way.

[0003] The above-mentioned fixing ways have high requirements for pin shaft assembly, generally require that the radial angle of the pin shaft meet the bolt fixing requirements, and the pin shaft is difficult to adjust in the tight fit. In addition, there is an assembly gap between the bolt and the bolt hole, and between the blocking pin plate and the clamping groove. Under the action of vibration load and impact load, the pin shaft can still rotate or move in the small gap. Therefore, the existing pin shaft fixing principle cannot limit the rotation of the pin shaft. Moreover, the radial small pin shaft fixing way and the blocking pin plate clamping fixing way cannot even avoid the axial movement of the pin shaft.

[0004] Due to the difference in hardness between the pin shaft and the shaft hole, the action of the pin shaft inevitably causes abrasion to the shaft hole, causing wear of the shaft hole, loss of the mechanical and kinematic effects of the pin shaft device, and damage to important ear plate components, thereby increasing the cost of later maintenance and maintenance of the equipment. SUMMARY

[0005] The present application provides a pin shaft self-adaptive stop device and a pin shaft mounting method, which improves the following problems existing in the existing pin shaft limiting way: 1. difficulty in pin shaft installation; 2. under the action of vibration load, impact load and the like, the pin shaft can still rotate and move in the small gap; 3. wear of the main ear plate shaft hole, increasing the cost of later maintenance and maintenance of the equipment.

[0006] The present application provides a pin shaft self-adaptive stop device, which comprises a main ear plate, a pin shaft, a limiting plate, a clamping and blocking plate, and a fixing screw. The main ear plate is provided with a main ear plate shaft hole and a main ear plate fixing hole, and the main ear plate fixing hole is located outside the main ear plate shaft hole. Two limiting plates are fixed symmetrically and parallel to each other on both sides of the main ear plate shaft hole and the main ear plate fixing hole. The pin shaft comprises a shaft rod and a connecting flange fixed at the end of the shaft rod. The connecting flange is provided with a flange fixing hole, and the two sides of the connecting flange are provided with flange inclined surfaces. The two flange inclined surfaces are symmetrically arranged on both sides of the shaft rod. The shaft rod passes through the main ear plate shaft hole, and the connecting flange is in close contact with the main ear plate. The fixing screw passes through the flange fixing hole and the main ear plate fixing hole to connect the pin shaft and the main ear plate. The clamping and blocking plate is a wedge-shaped plate provided with a clamping wedge surface. The clamping and blocking plate is inserted between the limiting plate and the connecting flange and is in close contact with the limiting plate and the connecting flange, and the clamping wedge surface faces the flange inclined surface.

[0007] Further, the limiting plate is provided with a limiting plate fixing hole, a fastening screw is fixedly arranged in the limiting plate fixing hole; and the clamping stop plate is provided with a limiting wedge surface for limiting the tail end of the fastening screw.

[0008] Further, the limiting plate fixing hole is a threaded hole or a light hole, and the fastening screw is provided with a fastening nut on one side or both sides of the limiting plate fixing hole.

[0009] Further, the limiting plate is provided with an L-shaped groove on the side facing the main ear plate, and the clamping stop plate is pressed by the limiting plate through the L-shaped groove.

[0010] The application provides a pin shaft installation method, which is performed by using the self-adaptive stop device, and comprises the following steps:

[0011] S1, installing the pin shaft

[0012] The shaft rod passes through the shaft hole of the main ear plate and is connected to the flange which is tightly attached to the main ear plate.

[0013] S2, installing the clamping stop plate

[0014] The small end of the clamping stop plate is inserted between the limiting plate and the connecting flange, and force is applied to the large end of the clamping stop plate.

[0015] If the flange fixing hole and the main ear plate fixing hole are aligned in step S1, force is applied to the limiting plate and the connecting flange during the insertion of the two clamping stop plates, so as to eliminate the tolerances existing in the manufacturing and installation of the limiting plate and the connecting flange, and realize self-compensation.

[0016] If the flange fixing hole and the main ear plate fixing hole are not aligned in step S1, force is applied to the limiting plate and the connecting flange during the insertion of the two clamping stop plates, so as to rotate the connecting flange to align the flange fixing hole and the main ear plate fixing hole, realize self-adaptation, eliminate the tolerances existing in the manufacturing and installation of the limiting plate and the connecting flange, and realize self-compensation.

[0017] S3, installing the fixing screw

[0018] S4, installing the fastening screw and pressing the limiting wedge surface.

[0019] The pin shaft self-adapting stop device comprises a main lug plate, a pin shaft, a limiting plate, a clamping stop plate and a fixing screw.

[0020] Further, the limiting plate is provided with a limiting plate fixing hole, and a fastening screw is fixedly arranged in the limiting plate fixing hole.

[0021] Further, the limiting plate fixing hole is a threaded hole, and a fastening nut is arranged on one side or both sides of the limiting plate fixing hole.

[0022] Further, the side of the limiting plate facing the main lug plate is provided with an L-shaped groove, and the clamping stop plate passes through the L-shaped groove and is pressed by the limiting plate.

[0023] The pin shaft installation method comprises the following steps:

[0024] S1, installing the pin shaft

[0025] The shaft rod passes through the main lug plate shaft hole, and the connecting flange is tightly attached to the main lug plate.

[0026] S2, installing the clamping stop plate

[0027] The small end of the clamping stop plate is inserted between the limiting plate and the connecting flange, and force is applied to the large end of the clamping stop plate.

[0028] If the flange fixing hole and the main lug plate fixing hole are aligned in step S1, force is applied to the limiting plate and the connecting flange during the insertion of the clamping stop plate, so as to eliminate the tolerances existing in the manufacturing and installation of the limiting plate and the connecting flange, and realize self-compensation.

[0029] If the flange fixing hole and the main lug plate fixing hole are not aligned in step S1, force is applied to the limiting plate and the connecting flange during the insertion of the clamping stop plate, so as to rotate the connecting flange to align the flange fixing hole and the main lug plate fixing hole, realize self-adaptation, and eliminate the tolerances existing in the manufacturing and installation of the limiting plate and the connecting flange, and realize self-compensation.

[0030] S3, installing the fixing screw

[0031] S4, install the fastening screw, and press the limiting wedge surface.

[0032] The present application has the following beneficial effects:

[0033] 1. The gap is self-compensated, the gap existing in the manufacture or installation of the limiting plate and the connecting flange is compensated by the wedge-shaped clamping baffle, the design and processing of the pin shaft, and the positioning requirement of the limiting plate welding is extremely low, which can greatly reduce the production cost of the device;

[0034] 2. The self-adaptation of the installation position of the pin shaft is realized, if the flange fixing hole and the main ear plate fixing hole are not aligned during the installation of the pin shaft, the limiting plate and the connecting flange are forced during the insertion of the clamping baffle, the connecting flange is rotated to align the flange fixing hole and the main ear plate fixing hole, the installation difficulty of the pin shaft is reduced, and the assembly efficiency is improved;

[0035] 3. The pin shaft is effectively clamped by the wedge-shaped structure, the limiting plate is welded on the main ear plate, the pin shaft is installed on the main ear plate, the limiting plate and the flange inclined surface form a certain angle, the clamping baffle is clamped between the limiting plate and the flange inclined surface, the fastening screw is tightened against the clamping baffle limiting wedge surface to prevent the clamping baffle from loosening, the double nuts are designed between the fastening screw and the limiting plate to prevent the fastening screw from loosening, and thus the reliable clamping of the pin shaft is realized, and the pin shaft will not rotate and move in the small gap under the action of vibration load and impact load;

[0036] 4. The pin shaft is stopped, the wear and failure of the main ear plate shaft hole are avoided, the ear plate shaft sleeve is saved, and the equipment maintenance and maintenance cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0038] Figure 1 It is a schematic view of the pin shaft self-adaptive stopping device in example 1.

[0039] Figure 2 It is a schematic view of the pin shaft self-adaptive stopping device in example 1. Figure 1 It is a sectional view in A-A direction.

[0040] Figure 3 It is a schematic view of the main ear plate.

[0041] Figure 4 It is a schematic view of the pin shaft.

[0042] Figure 5 is a schematic view of the limiting plate;

[0043] Figure 6 is a schematic view of the limiting plate; Figure 5 is a left view of the carding baffle;

[0044] Figure 7 is a schematic view of the carding baffle.

[0045] Figure legend: 1-main ear plate, 1.1-main ear plate shaft hole, 1.2-main ear plate fixing hole, 2-pin shaft, 2.1-connection flange, 2.2-flange fixing hole, 2.3-shaft rod, 2.4-flange inclined surface, 3-limiting plate, 3.1-limiting plate fixing hole, 4-carding baffle, 4.1-carding wedge surface, 4.2-limiting wedge surface, 5-fastening screw, 6-fastening nut, 7-fixing screw. DETAILED DESCRIPTION

[0046] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0047] Example 1

[0048] The present embodiment provides a pin shaft self-adaptive stop device, which comprises a main ear plate 1, a pin shaft 2, a limiting plate 3, a carding baffle 4, a fastening screw 5, a fastening nut 6 and a fixing screw 7.

[0049] The main ear plate 1 is provided with a main ear plate shaft hole 1.1 and a main ear plate fixing hole 1.2, and the main ear plate fixing hole 1.2 is located outside the main ear plate shaft hole 1.1; two limiting plates 3 are fixed symmetrically and in parallel on both sides of the main ear plate shaft hole 1.1 and the main ear plate fixing hole 1.2; the pin shaft 2 comprises a shaft rod 2.3 and a connection flange 2.1 fixed at the end of the shaft rod 2.3, the connection flange 2.1 is provided with a flange fixing hole 2.2, and the two sides of the connection flange 2.1 are provided with flange inclined surfaces 2.4, the two flange inclined surfaces 2.4 are symmetrically arranged on both sides of the shaft rod 2.3, the shaft rod 2.3 passes through the main ear plate shaft hole 1.1, the connection flange 2.1 is close to the main ear plate 1, and the fixing screw 7 connects the pin shaft 2 and the main ear plate 1 by passing through the flange fixing hole 2.2 and the main ear plate fixing hole 1.2; the carding baffle 4 is a wedge-shaped plate provided with a carding wedge surface 4.1, the carding baffle 4 is inserted between the limiting plate 3 and the connection flange 2.1 and is close to the limiting plate 3 and the connection flange 2.1, and the carding wedge surface 4.1 faces the flange inclined surface 2.4.

[0050] The limiting plate 3 is provided with a limiting plate fixing hole 3.1, and the fastening screw 5 passes through the limiting plate fixing hole 3.1; the carding baffle 4 is provided with a limiting wedge surface 4.2 for limiting the tail end of the fastening screw 5.

[0051] The limiting plate fixing hole 3.1 is a threaded hole or a light hole, and the fastening screw 5 is sleeved with a fastening nut 6 on one side or both sides of the limiting plate fixing hole 3.1. The fastening screw 5 has strong fault tolerance in the design of the anti-loosening structure, and can adopt the limiting plate threaded hole + fastening nut anti-loosening; in the case of fastening thread failure, double nut anti-loosening can be arranged after reaming, thereby reducing the later maintenance and maintenance cost. Of course, light hole + double fastening nut anti-loosening of the limiting plate can also be directly used.

[0052] The side of the limiting plate 3 facing the main lug plate 1 is provided with an L-shaped groove, and the clamping stop plate 4 passes through the L-shaped groove and is pressed by the limiting plate 3.

[0053] The main lug plate 1, the pin shaft 2, the limiting plate 3, the clamping stop plate 4, the fastening screw 5, and the fastening nut 6 form a pin shaft clamping system; the main lug plate 1, the pin shaft 2, and the fixing screw 7 form a pin shaft anti-channeling system. The clamping system and the anti-channeling system jointly realize the pin shaft stop.

[0054] The clamping system adopts a wedge-shaped design and has the following effects. Firstly, when the clamping stop plate 4 is inserted between the limiting plate 3 and the flange inclined surface 2.4, it can automatically rotate the pin shaft 2 to the correct orientation under the guidance of the limiting plate 3 and the flange inclined surface 2.4 to align the flange fixing hole 2.2 with the main lug plate fixing hole 1.2, thereby accelerating the assembly efficiency. Secondly, the design and processing requirements of the flange inclined surface 2.4 and the welding positioning requirements of the limiting plate 3 are extremely low, and the wedge-shaped design can completely compensate for the processing deviation of the pin shaft 2, the welding deviation of the limiting plate 3, and the matching deviation, thereby realizing reliable work of the main clamping stop plate (the clamping stop plate 4 installed first) and convenient installation of the auxiliary clamping stop plate (the clamping stop plate 4 installed later). Thirdly, due to the wedge-shaped structure reinforcement effect, the required fastening force of the clamping stop plate 4 is much smaller than the torsional load resistance of the pin shaft 2.

[0055] The embodiment adopts double-wedge-shaped structure clamping, and any one group of wedge-shaped structure of the clamping system can be used as the clamping main body, and the other group of wedge-shaped structure can be used for auxiliary reverse locking, thereby forming a pin shaft bidirectional rotation self-locking. For example, when the pin shaft 2 is subjected to clockwise stress, the right clamping stop plate 4 is the clamping main body, the left clamping stop plate 4 is used for auxiliary reverse locking, and the two clamping stop plates 4 are used in combination to form self-locking, which is particularly suitable for heavy pin shafts and heavy load working conditions and has extremely high working reliability.

[0056] The clamping stop plate 4 fastening part adopts a large wedge angle design, which can ensure that the fastening screw 5 has sufficient adjustment range.

[0057] The L-shaped groove is arranged on the limiting plate 3, which can limit the clamping stop plate 4 in the axial direction of the pin shaft 2 to prevent the clamping stop plate 4 from falling off in the axial direction of the pin shaft.

[0058] The fixing screw 7 passes through the flange fixing hole 2.2 and the main lug plate fixing hole 1.2 to connect the pin shaft 2 and the main lug plate 1, thereby realizing the axial bidirectional limiting of the pin shaft 2.

[0059] The device has the characteristics of self-adaptation, self-compensation, simple processing and convenient installation.

[0060] Embodiment 2

[0061] The embodiment provides a pin shaft installation method, which is performed by using the pin shaft self-adaptive stop device in embodiment 1 and includes the following steps.

[0062] S1, installing the pin shaft 2

[0063] The shaft rod 2.3 passes through the main ear plate shaft hole 1.1, and the connecting flange 2.1 is close to the main ear plate 1.

[0064] S2, installing the clamping and rotating baffle 4

[0065] The small end of the clamping and rotating baffle 4 is inserted between the limiting plate 3 and the connecting flange 2.1, and force is applied to the large end of the clamping and rotating baffle 4.

[0066] If the flange fixing hole 2.2 and the main ear plate fixing hole 1.2 are aligned in step S1, force is applied to the limiting plate 3 and the connecting flange 2.1 during the insertion of the two clamping and rotating baffles 4, so as to eliminate the tolerances existing in the limiting plate 3 and the connecting flange 2.1 during manufacturing and installation, and realize self-compensation.

[0067] If the flange fixing hole 2.2 and the main ear plate fixing hole 1.2 are not aligned in step S1, force is applied to the limiting plate 3 and the connecting flange 2.1 during the insertion of the two clamping and rotating baffles 4, so that the connecting flange 2.1 is rotated to align the flange fixing hole 2.2 and the main ear plate fixing hole 1.2, and self-adaptation is realized, and the tolerances existing in the limiting plate 3 and the connecting flange 2.1 during manufacturing and installation are eliminated, and self-compensation is realized.

[0068] S3, installing the fixing screw 7

[0069] S4, installing the fastening screw 5 and pressing the limiting wedge surface 4.2.

[0070] Embodiment 3

[0071] The embodiment provides a pin shaft self-adaptive stop device, which includes a main ear plate 1, a pin shaft 2, a limiting plate 3, a clamping and rotating baffle 4, a fastening screw 5 and a fixing screw 7.

[0072] The main lug 1 is provided with a main lug shaft hole 1.1 and a main lug fixing hole 1.2, the main lug fixing hole 1.2 is located outside the main lug shaft hole 1.1; the limiting plate 3 is fixed on one side of the main lug shaft hole 1.1 and the main lug fixing hole 1.2; the pin shaft 2 includes a shaft rod 2.3 and a connecting flange 2.1 fixed at the end of the shaft rod 2.3, the connecting flange 2.1 is provided with a flange fixing hole 2.2, one side of the connecting flange 2.1 is provided with a flange inclined surface 2.4, the shaft rod 2.3 passes through the main lug shaft hole 1.1, the connecting flange 2.1 is close to the main lug 1, the flange inclined surface 2.4 faces the limiting plate 3, the fixing screw 7 passes through the flange fixing hole 2.2 and the main lug fixing hole 1.2 to connect the pin shaft 2 and the main lug 1; the carding baffle 4 is a wedge-shaped plate, provided with a carding wedge surface 4.1, the carding baffle 4 is inserted between the limiting plate 3 and the connecting flange 2.1 and close to the limiting plate 3 and the connecting flange 2.1, the carding wedge surface 4.1 faces the flange inclined surface 2.4.

[0073] The limiting plate 3 is provided with a limiting plate fixing hole 3.1, and the fastening screw 5 passes through the limiting plate fixing hole 3.1; the carding baffle 4 is provided with a limiting wedge surface 4.2 for limiting the tail end of the fastening screw 5.

[0074] The limiting plate fixing hole 3.1 is a threaded hole, and the fastening screw 5 is sleeved with a fastening nut 6 on one side or both sides of the limiting plate fixing hole 3.1.

[0075] The side of the limiting plate 3 facing the main lug 1 is provided with an L-shaped groove, and the carding baffle 4 is pressed by the limiting plate 3 through the L-shaped groove.

[0076] The main lug 1, the pin shaft 2, the limiting plate 3, the carding baffle 4, the fastening screw 5 and the fastening nut 6 form a pin shaft carding system; the main lug 1, the pin shaft 2 and the fixing screw 7 form a pin shaft anti-channeling system. The carding system and the anti-channeling system together realize the pin shaft stop. The embodiment is different from the embodiment 1 in that a single wedge-shaped structure is used for carding, which can be used for non-heavy pin shafts and heavy load conditions.

[0077] Embodiment 4

[0078] The embodiment provides a pin shaft installation method, which is carried out by using the pin shaft self-adaptive stop device in the embodiment 3, and includes the following steps:

[0079] S1, installing the pin shaft 2

[0080] The shaft rod 2.3 passes through the main lug shaft hole 1.1, and the connecting flange 2.1 is close to the main lug 1;

[0081] S2, installing the carding baffle 4

[0082] The small end of the carding baffle 4 is inserted between the limiting plate 3 and the connecting flange 2.1, and force is applied to the large end of the carding baffle 4;

[0083] If the flange fixing hole 2.2 and the main lug fixing hole 1.2 are aligned at step S1, the limiting plate 3 and the connecting flange 2.1 are forced during the insertion of the clamping stop plate 4, eliminating the tolerances existing in the manufacturing and installation of the limiting plate 3 and the connecting flange 2.1, and realizing self-compensation.

[0084] If the flange fixing hole 2.2 and the main lug fixing hole 1.2 are not aligned at step S1, the connecting flange 2.1 is rotated to align the flange fixing hole 2.2 and the main lug fixing hole 1.2 by forcing the limiting plate 3 and the connecting flange 2.1 during the insertion of the clamping stop plate 4, realizing self-adaptation, and eliminating the tolerances existing in the manufacturing and installation of the limiting plate 3 and the connecting flange 2.1, and realizing self-compensation.

[0085] S3, install the fixing screw 7

[0086] S4, install the fastening screw 5, and press the limiting wedge surface 4.2.

[0087] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A pin shaft self-adapting stop device, characterized in that, It comprises a main lug plate (1), a pin shaft (2), a limiting plate (3), a clamping and turning baffle (4) and a fixing screw (7); The main lug plate (1) is provided with a main lug plate shaft hole (1.1) and a main lug plate fixing hole (1.2), and the main lug plate fixing hole (1.2) is located outside the main lug plate shaft hole (1.1); The two limiting plates (3) are fixed symmetrically and parallel to each other on the two sides of the main lug plate shaft hole (1.1) and the main lug plate fixing hole (1.2); The pin shaft (2) comprises a shaft rod (2.3) and a connecting flange (2.1) fixed at the end of the shaft rod (2.3), the connecting flange (2.1) is provided with a flange fixing hole (2.2), the two sides of the connecting flange (2.1) are provided with flange inclined surfaces (2.4), the two flange inclined surfaces (2.4) are symmetrically arranged on the two sides of the shaft rod (2.3), the shaft rod (2.3) penetrates through the main lug plate shaft hole (1.1), the connecting flange (2.1) is tightly attached to the main lug plate (1), and the fixing screw (7) penetrates through the flange fixing hole (2.2) and the main lug plate fixing hole (1.2) to connect the pin shaft (2) and the main lug plate (1); The clamping and turning baffle (4) is a wedge-shaped plate provided with a clamping and turning wedge surface (4.1), the clamping and turning baffle (4) is inserted between the limiting plate (3) and the connecting flange (2.1) and tightly attached to the limiting plate (3) and the connecting flange (2.1), and the clamping and turning wedge surface (4.1) faces the flange inclined surface (2.4); The side of the limiting plate (3) facing the main lug plate (1) is provided with an L-shaped groove, and the clamping and turning baffle (4) is compressed by the limiting plate (3) through the L-shaped groove.

2. The pin shaft self-adapting stop device according to claim 1, characterized in that, The limiting plate (3) is provided with a limiting plate fixing hole (3.1), and a fastening screw (5) is fixedly arranged in the limiting plate fixing hole (3.1); The clamping and turning baffle (4) is provided with a limiting wedge surface (4.2) for limiting the tail end of the fastening screw (5).

3. The pin shaft self-adapting stop device according to claim 2, characterized in that, The limiting plate fixing hole (3.1) is a threaded hole or a light hole, and the fastening screw (5) is provided with a fastening nut (6) on one side or both sides of the limiting plate fixing hole (3.1).

4. A pin shaft mounting method characterized by, The pin shaft self-adaptive stop device of claim 3 is used, comprising the following steps: S1, installing the pin shaft (2) The shaft rod (2.3) penetrates through the main lug plate shaft hole (1.1), and the connecting flange (2.1) is tightly attached to the main lug plate (1); S2, installing the clamping and turning baffle (4) The small end of the clamping and turning baffle (4) is inserted between the limiting plate (3) and the connecting flange (2.1), and force is applied to the large end of the clamping and turning baffle (4); If the flange fixing hole (2.2) and the main lug plate fixing hole (1.2) are aligned in step S1, force is applied to the limiting plate (3) and the connecting flange (2.1) during the insertion of the two clamping and turning baffles (4), so as to eliminate the tolerances existing in the limiting plate (3) and the connecting flange (2.1) during manufacturing and installation, and realize self-compensation; If the flange fixing hole (2.2) and the main ear plate fixing hole (1.2) are not aligned at step S1, the two clamping stop plates (4) are inserted during the process of applying force to the limiting plate (3) and the connecting flange (2.1), so that the connecting flange (2.1) is rotated to align the flange fixing hole (2.2) with the main ear plate fixing hole (1.2), achieving self-adaptation, and eliminating the tolerance between the limiting plate (3) and the connecting flange (2.1) during manufacturing and installation, achieving self-compensation; S3, install the fixing screw (7) S4, install the fastening screw (5) to compress the limiting wedge surface (4.2).

5. A pin shaft self-adapting stop device, characterized in that, It comprises a main ear plate (1), a pin shaft (2), a limiting plate (3), a clamping stop plate (4), and a fixing screw (7); The main ear plate (1) is provided with a main ear plate shaft hole (1.1) and a main ear plate fixing hole (1.2), and the main ear plate fixing hole (1.2) is located outside the main ear plate shaft hole (1.1); The limiting plate (3) is fixed on one side of the main ear plate shaft hole (1.1) and the main ear plate fixing hole (1.2); The pin shaft (2) comprises a shaft rod (2.3) and a connecting flange (2.1) fixed at the end of the shaft rod (2.3), and the connecting flange (2.1) is provided with a flange fixing hole (2.2). One side of the connecting flange (2.1) is provided with a flange inclined surface (2.4). The shaft rod (2.3) passes through the main ear plate shaft hole (1.1), and the connecting flange (2.1) is in close contact with the main ear plate (1). The flange inclined surface (2.4) faces the limiting plate (3). The fixing screw (7) passes through the flange fixing hole (2.2) and the main ear plate fixing hole (1.2) to connect the pin shaft (2) and the main ear plate (1); The clamping stop plate (4) is a wedge-shaped plate provided with a clamping wedge surface (4.1). The clamping stop plate (4) is inserted between the limiting plate (3) and the connecting flange (2.1) and is in close contact with the limiting plate (3) and the connecting flange (2.1). The clamping wedge surface (4.1) faces the flange inclined surface (2.4); The side of the limiting plate (3) facing the main ear plate (1) is provided with an L-shaped groove. The clamping stop plate (4) passes through the L-shaped groove and is compressed by the limiting plate (3).

6. The pin shaft self-adapting stop device according to claim 5, characterized in that, The limiting plate (3) is provided with a limiting plate fixing hole (3.1). The fastening screw (5) is fixedly inserted into the limiting plate fixing hole (3.1); The clamping stop plate (4) is provided with a limiting wedge surface (4.2) for limiting the tail end of the fastening screw (5).

7. The pin shaft self-adapting stop device according to claim 6, characterized in that, The limiting plate fixing hole (3.1) is a threaded hole. The fastening screw (5) is provided with a fastening nut (6) on one side or both sides of the limiting plate fixing hole (3.1).

8. A pin shaft mounting method characterized by, The pin shaft self-adaptive stop device of claim 7 is used, comprising the following steps: S1, install the pin shaft (2) The shaft rod (2.3) passes through the main ear plate shaft hole (1.1), and the connecting flange (2.1) is in close contact with the main ear plate (1); S2, install the clamping stop plate (4) Insert the small end of the clamping stop plate (4) between the limiting plate (3) and the connecting flange (2.1), and apply force to the large end of the clamping stop plate (4); If the flange fixing hole (2.2) and the main ear plate fixing hole (1.2) are aligned at step S1, the limiting plate (3) and the connecting flange (2.1) are forced during the insertion of the card turn baffle (4), eliminating the tolerances existing in the manufacturing and installation of the limiting plate (3) and the connecting flange (2.1), and realizing self-compensation; If the flange fixing hole (2.2) and the main ear plate fixing hole (1.2) are not aligned at step S1, the limiting plate (3) and the connecting flange (2.1) are forced during the insertion of the card turn baffle (4), so that the connecting flange (2.1) rotates to align the flange fixing hole (2.2) and the main ear plate fixing hole (1.2), realizing self-adaptation, and eliminating the tolerances existing in the manufacturing and installation of the limiting plate (3) and the connecting flange (2.1), and realizing self-compensation; S3, install the fixing screw (7) S4, install the fastening screw (5), and press the limiting wedge surface (4.2).

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