Auxiliary positioning device of hydraulic support structural part limiting block
By designing auxiliary positioning devices for components such as positioning reference seats and connection gauges, the precise installation problem of limit blocks of hydraulic support structural parts is solved, the welding quality and efficiency are improved, and the production cost is reduced.
Patent Information
- Application Number
- CN202422262893.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-14
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-14
AI Technical Summary
The prior art lacks an auxiliary positioning device that can be used for the limit blocks of different types of hydraulic support structural parts, making it difficult to accurately install the limit blocks.
An auxiliary positioning device including a positioning reference seat, a connecting gauge, and a positioning card plate is designed. The precise positioning and adjustment of the limit block is achieved through components such as fixed wheels, rolling bearings, connecting rods, and pointers.
The accurate positioning of the limit block is achieved, the welding quality and efficiency are improved, the production cost is reduced, the operation is convenient and reusable.
Smart Images
Figure CN223089359U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of fully mechanized coal mining support, and particularly relates to an auxiliary positioning device for a limit block of a hydraulic support structural member. Background Technique
[0002] The limit device of the hydraulic support structural members (roof beam, base) is an important part of the hydraulic system of the hydraulic support, mainly used to limit the movement of the hydraulic support in a specific direction to ensure the stability and safety of the hydraulic support. The types and structures of the limit blocks of the hydraulic support structural members (roof beam, base) are diverse, specifically depending on factors such as the model, design, and working environment of the hydraulic support. The structural member limit blocks are generally made of metal materials and have sufficient strength and corrosion resistance. However, there is currently a lack of an auxiliary positioning device that can be used for different types of limit blocks to assist in positioning different types of limit blocks so that the limit blocks can be accurately installed on the hydraulic support structural members. Content of the Utility Model
[0003] The utility model overcomes the deficiencies of the prior art and provides an auxiliary positioning device for a limit block of a hydraulic support structural member, solving the problem that there is currently a lack of an auxiliary positioning device that can be used for different types of limit blocks.
[0004] To achieve the above purpose, the utility model is realized through the following technical solutions.
[0005] An auxiliary positioning device for a limit block of a hydraulic support structural member includes a positioning reference seat, a connecting gauge, and a positioning clamping plate; the positioning reference seat includes a connecting rod, and a fixed wheel is rotatably provided at each end of the connecting rod, and a circle of positioning bolts is provided on the fixed wheel; one end of the connecting gauge is sleeved outside the connecting rod, and a waist-shaped groove is provided on the connecting gauge; the positioning clamping plate includes a triangular plate and an L-shaped plate fixedly connected to each other, and a fixing hole and an arc hole are provided on the triangular plate; a first fixing bolt passes through the fixing hole and the waist-shaped groove and is screwed with a fixing nut, and a second fixing bolt passes through the arc hole and the waist-shaped groove and is screwed with a fixing nut; a pointer seat is slidably provided at the upper end of the connecting gauge, and a first pointer on the pointer seat points to the axis of the first fixing bolt; a second pointer is rotatably provided on the triangular plate, and the second pointer is in contact with the connecting gauge.
[0006] Further, a bearing sleeve is sleeved at each end of the outer cylindrical surface of the connecting rod, and a rolling bearing is sleeved outside each bearing sleeve; a first fixing screw is screwed on the bearing sleeve, and the tip of the first fixing screw is tightly pressed against the outer cylindrical surface of the connecting rod, and the bearing sleeve is fixed to the outside of the connecting rod by the first fixing screw.
[0007] Further, the inner ring of the rolling bearing is fixedly sleeved on the outer side of the bearing sleeve, and the fixed wheel is fixedly sleeved on the outer side of the outer ring of the rolling bearing; the fixed wheel includes an inner ring, an outer ring is sleeved on the outer side of the inner ring, the inner ring and the outer ring are coaxially arranged, and the outer ring and the inner ring are fixedly connected by three radially arranged connecting blocks; three threaded holes are uniformly arranged along the circumference on the side wall of the outer ring, the three threaded holes are arranged along the radial direction of the outer ring, and a positioning bolt is screwed in each of the threaded holes respectively, and the tip of the positioning bolt faces the outside of the outer ring.
[0008] Further, the connecting rule is a long strip plate-like structure, and a waist-shaped groove penetrating through the front and back is arranged in the middle of the connecting rule, and the length direction of the waist-shaped groove is the same as the length direction of the connecting rule.
[0009] Further, a connecting ball is fixedly arranged at one end of the connecting rule, and a through hole is arranged on the connecting ball, and the axis of the through hole is perpendicular to the connecting rule; the through hole on the connecting ball of the connecting rule is sleeved on the outer side of the connecting rod.
[0010] Further, length scale lines are arranged at the upper side edge of the front end face of the connecting rule, a T-shaped groove is arranged on the upper end face of the connecting rule, the pointer seat is slidably arranged inside the T-shaped groove, a T-shaped block is fixedly arranged at the lower end of the pointer seat, the T-shaped block is slidably clamped inside the T-shaped groove, a threaded through hole is arranged on the pointer seat, a second fixing screw is screwed in the threaded through hole, and the tip of the second fixing screw faces the inner bottom surface of the T-shaped groove; the first pointer is fixedly arranged at the front end of the pointer seat, and the end of the first pointer far from the pointer seat points to the length scale line.
[0011] Further, the triangular plate is a plate-like structure of an isosceles triangle arranged vertically, and the length of the first side and the second side of the triangular plate is equal; the fixing hole is arranged at the junction of the first side and the second side of the triangular plate; the arc hole is arranged at the junction of the second side and the third side of the triangular plate, and the axis of the arc hole is located at the axis of the fixing hole; the second pointer is arranged at the junction of the first side and the third side of the front end face of the triangular plate, a third fixing screw is inserted at one end of the second pointer, and the third fixing screw is screwed on the front end face of the triangular plate at the junction of the first side and the third side; an arc-shaped angle scale line is arranged on the front end face of the triangular plate, and the end of the second pointer far from the third fixing screw faces the angle scale line.
[0012] Furthermore, the L-shaped plate includes a transverse section and a longitudinal section, which are perpendicular to each other; one end of the transverse section is fixedly connected to one end of the longitudinal section, and the end of the transverse section away from the longitudinal section is fixedly connected to the middle of the third side of the triangular plate; the transverse section is perpendicular to the third side of the triangular plate, the longitudinal section is parallel to the third side of the triangular plate, and the longitudinal section is located on the side of the transverse section away from the third fixing screw; an auxiliary handle is fixedly arranged in the middle of the side of the transverse section away from the longitudinal section.
[0013] The beneficial effects of the present utility model relative to the prior art are as follows:
[0014] 1. An auxiliary positioning device for the limit block of the hydraulic support structural member provided by the present utility model has accurate positioning. Through the positioning mechanism and the limit mechanism, the accurate position of the limit block of the hydraulic support structural member during the welding process is ensured, and the welding quality is improved.
[0015] 2. An auxiliary positioning device for the limit block of the hydraulic support structural member provided by the present utility model is convenient for workers to operate. Reusability makes the welding operation more flexible and convenient, and can meet the welding requirements of the limit blocks of hydraulic support structural members with different lengths and positions.
[0016] 3. An auxiliary positioning device for the limit block of the hydraulic support structural member provided by the present utility model improves production efficiency. The automated positioning and limiting process reduces manual intervention and improves welding efficiency.
[0017] 4. An auxiliary positioning device for the limit block of the hydraulic support structural member provided by the present utility model reduces manufacturing costs. By improving the welding quality and efficiency, the production cost and maintenance cost are indirectly reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The following further details the present utility model with reference to the accompanying drawings:
[0019] Figure 1 is the three-dimensional schematic diagram of the whole of the present utility model;
[0020] Figure 2 is the three-dimensional schematic diagram of the positioning reference seat;
[0021] Figure 3 is the three-dimensional schematic diagram of the connecting gauge;
[0022] Figure 4 is the three-dimensional schematic diagram of the positioning card board;
[0023] Figure 5 is the three-dimensional schematic diagram when the present utility model is used on the hydraulic support structural member;
[0024] Figure 6 is Figure 5Partial enlarged schematic diagram at position A in
[0025] Figure 7 is the plan schematic diagram when the utility model is used on the structural member of the hydraulic support;
[0026] Figure 8 is Figure 7 Partial enlarged schematic diagram at position B in
[0027] Among them, 1 is the positioning reference seat, 2 is the connecting gauge, 3 is the positioning card plate, 4 is the connecting rod, 5 is the bearing sleeve, 6 is the rolling bearing, 7 is the first fixing screw, 8 is the fixing wheel, 9 is the inner ring, 10 is the outer ring, 11 is the connecting block, 12 is the positioning bolt, 13 is the waist-shaped groove, 14 is the connecting ball, 15 is the length scale line, 16 is the T-shaped groove, 17 is the pointer seat, 18 is the second fixing screw, 19 is the first pointer, 20 is the triangular plate, 21 is the L-shaped plate, 22 is the fixing hole, 23 is the circular arc hole, 24 is the second pointer, 25 is the third fixing screw, 26 is the angle scale line, 27 is the horizontal section, 28 is the vertical section, 29 is the auxiliary handle, 30 is the first fixing bolt, 31 is the second fixing bolt, 32 is the fixing nut, 33 is the structural member of the hydraulic support, 34 is the limit block. Specific implementation manner
[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the utility model clearer and more understandable, the utility model is further described in detail below in conjunction with the embodiments and the drawings. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. The technical solutions of the utility model are described in detail below in conjunction with the embodiments and the drawings, but the protection scope is not limited by this.
[0029] As Figure 1 —8 shows, the utility model provides an auxiliary positioning device for the limit block of the structural member of the hydraulic support, including a positioning reference seat 1, a connecting gauge 2, and a positioning card plate 3.
[0030] The positioning reference base 1 includes a connecting rod 4. At both ends of the outer cylindrical surface of the connecting rod 4, a bearing sleeve 5 is sleeved respectively. On the outer side of each bearing sleeve 5, a rolling bearing 6 is sleeved respectively. A first fixing screw 7 is screwed on the bearing sleeve 5, and the tip of the first fixing screw 7 is tightly pressed against the outer cylindrical surface of the connecting rod 4. The bearing sleeve 5 is fixed to the outer side of the connecting rod 4 by the first fixing screw 7. The inner ring of the rolling bearing 6 is fixedly sleeved on the outer side of the bearing sleeve 5, and a fixed wheel 8 is fixedly sleeved on the outer side of the outer ring of the rolling bearing 6. The fixed wheel 8 includes an inner ring 9. An outer ring 10 is sleeved on the outer side of the inner ring 9. The inner ring 9 and the outer ring 10 are coaxially arranged. The outer ring 10 and the inner ring 9 are fixedly connected by three radially arranged connecting blocks 11. On the side wall of the outer ring 10, three threaded holes are evenly arranged along the circumference. The three threaded holes are arranged along the radial direction of the outer ring 10. A positioning bolt 12 is screwed in each threaded hole respectively, and the tip of the positioning bolt 12 faces the outer side of the outer ring 10.
[0031] The connecting gauge 2 is a long strip plate-like structure. A waist-shaped groove 13 that penetrates through from front to back is arranged in the middle of the connecting gauge 2. The length direction of the waist-shaped groove 13 is the same as the length direction of the connecting gauge 2. A connecting ball 14 is fixedly arranged at one end of the connecting gauge 2. A through hole is arranged on the connecting ball 14, and the axis of the through hole is perpendicular to the connecting gauge 2. Length scale lines 15 are arranged at the upper side edge of the front end face of the connecting gauge 2, and the extending direction of the length scale lines 15 is parallel to the length direction of the connecting gauge 2. A T-shaped groove 16 is arranged on the upper end face of the connecting gauge 2. A pointer seat 17 is slidably arranged inside the T-shaped groove 16. A T-shaped block is fixedly arranged at the lower end of the pointer seat 17, and the T-shaped block is slidably clamped inside the T-shaped groove 16, so as to ensure the stable sliding of the pointer seat 17 inside the T-shaped groove 16. A threaded through hole is arranged on the pointer seat 17, and a second fixing screw 18 is screwed in the threaded through hole. The tip of the second fixing screw 18 faces the inner bottom surface of the T-shaped groove 16. A first pointer 19 is fixedly arranged at the front end of the pointer seat 17. The first pointer 19 is perpendicular to the length direction of the connecting gauge 2, and the end of the first pointer 19 far away from the pointer seat 17 points to the length scale lines 15.
[0032] The positioning card plate 3 includes a triangular plate 20 and an L-shaped plate 21 that are fixedly connected to each other, and the triangular plate 20 and the L-shaped plate 21 are located in the same plane.
[0033] The triangular plate 20 is a plate-like structure in the shape of an isosceles triangle arranged vertically, and the lengths of the first side and the second side of the triangular plate 20 are equal. A fixing hole 22 is provided at the junction of the first side and the second side of the triangular plate 20; an arc hole 23 is provided at the junction of the second side and the third side of the triangular plate 20, and the axis of the arc hole 23 is located at the axis of the fixing hole 22; a second pointer 24 is provided on the front end face of the triangular plate 20 at the junction of the first side and the third side, and a third fixing screw 25 is inserted at one end of the second pointer 24, and the third fixing screw 25 is screwed on the front end face of the triangular plate 20 at the junction of the first side and the third side; an arc-shaped angle scale line 26 is provided on the front end face of the triangular plate 20, and the center of the angle scale line 26 is located at the third fixing screw 25, and the end of the second pointer 24 away from the third fixing screw 25 faces the angle scale line 26.
[0034] The L-shaped plate 21 includes a transverse section 27 and a longitudinal section 28, and the transverse section 27 and the longitudinal section 28 are perpendicular to each other. One end of the transverse section 27 is fixedly connected to one end of the longitudinal section 28, and the end of the transverse section 27 away from the longitudinal section 28 is fixedly connected to the middle of the third side of the triangular plate 20; the transverse section 27 is perpendicular to the third side of the triangular plate 20, the longitudinal section 28 is parallel to the third side of the triangular plate 20, and the longitudinal section 28 is located on the side of the transverse section 27 away from the third fixing screw 25. An auxiliary handle 29 is fixedly provided in the middle on the side of the transverse section 27 away from the longitudinal section 28.
[0035] The through hole on the connecting ball 14 of the connecting gauge 2 is sleeved on the outside of the connecting rod 4.
[0036] The fixing hole 22 and the arc hole 23 of the triangular plate 20 both correspond to the waist-shaped groove 13 of the connecting gauge 2. The first fixing bolt 30 passes through the fixing hole 22 and the waist-shaped groove 13 and is then screwed with a fixing nut 32. The second fixing bolt 31 passes through the arc hole 23 and is then screwed with the waist-shaped groove 13 and a fixing nut 32. Through the cooperation of the first fixing bolt 30 and the second fixing bolt 31 with the fixing nut 32, the connecting gauge 2 is fixedly connected to the positioning card plate 3. By sliding the first fixing bolt 30 and the second fixing bolt 31 inside the waist-shaped groove 13, the relative position of the connecting gauge 2 and the positioning card plate 3 can be adjusted; by sliding the second fixing bolt 31 inside the arc hole 23, the relative angle of the connecting gauge 2 and the positioning card plate 3 can be adjusted.
[0037] The first pointer 19 points to the axis of the first fixing bolt 30.
[0038] The end of the second pointer 24 away from the third fixing screw 25 contacts the connecting gauge 2.
[0039] The working principle of the present utility model is as follows:
[0040] When installing the limit block 34 on the structural member 33 of the hydraulic support, it is necessary to rely on the auxiliary positioning device for positioning. Before using the auxiliary positioning device, it is necessary to first perform self-positioning relying on the model of the structural member 33 of the hydraulic support, and then rely on the auxiliary positioning device after self-positioning to install the limit block 34.
[0041] When the auxiliary positioning device performs self-positioning, first adjust the distance between the bearing sleeves 5 at both ends of the connecting rod 4 according to the opening width of the structural member 33 of the hydraulic support, so that the outer rings 10 on the outer sides of the two bearing sleeves 5 are inserted into the two hinge holes of the structural member 33 of the hydraulic support. Then tighten the three positioning bolts 12 on each outer ring 10 so that the tips of the positioning bolts 12 are tightly pressed against the inner wall of the hinge hole, so that the positioning reference seat 1 is fixedly connected to the structural member 33 of the hydraulic support.
[0042] Then loosen the fixing nuts 32 on the first fixing bolt 30 and the second fixing bolt 31 so that the positioning card plate 3 and the connecting gauge 2 can move relative to each other. Move the L-shaped plate 21 of the positioning card plate 3 until it is about to contact the limit block 34 of the model of the structural member 33 of the hydraulic support, ensure that the horizontal section 27 of the L-shaped plate 21 is in contact with the upper end surface of the limit block 34, and ensure that the vertical section 28 of the L-shaped plate 21 is in contact with the right end surface of the limit block 34. Then tighten the fixing nuts 32 on the first fixing bolt 30 and the second fixing bolt 31, so that the connecting gauge 2 and the positioning card plate 3 are fixed to each other. Then slide the pointer seat 17 inside the T-shaped groove 16 so that the first pointer 19 points to the axis of the first fixing bolt 30; then tighten the second fixing screw 18, so that the first pointer 19 is fixedly pointed at the first fixing bolt 30, and record the scale value of the first pointer 19 pointing to the length scale line 15. Then loosen the third fixing screw 25, make the end of the second pointer 24 away from the third fixing screw 25 contact with the connecting gauge 2, and then tighten the third fixing screw 25, and record the scale value of the second pointer 24 pointing to the angle scale line 26. In this way, the entire auxiliary positioning device has completed self-positioning.
[0043] After the self-positioning is completed, the fixing nuts 32 on the first fixing bolt 30 and the second fixing bolt 31 can be loosened, the second fixing screw 18 and the second fixing screw 18 can be loosened, and the positioning bolts 12 on the outer ring 10 can be loosened, so as to remove the auxiliary positioning device from the model of the structural member 33 of the hydraulic support.
[0044] When it is necessary to install the limit block 34, fix the two outer rings 10 of the self-positioned auxiliary positioning device by clamping them inside the hinge hole of the hydraulic support structure; then slide the pointer seat 17 so that the first pointer 19 points to the recorded scale value, and tighten the second fixing screw 18; then rotate the second pointer 24 so that the second pointer 24 points to the recorded scale line, and tighten the third fixing screw 25; then tighten the fixing nuts 32 on the first fixing bolt 30 and the second fixing bolt 31 to ensure that the first pointer 19 points to the axis of the first fixing bolt 30 and the second pointer 24 contacts the connecting gauge 2, thus fixing the auxiliary positioning device again. Then place the limit block 34 to be installed at the installation position, making the upper end surface of the limit block 34 contact the horizontal section 27 of the L-shaped plate 21 and the right end surface of the limit block 34 contact the vertical section 28 of the L-shaped plate 21. In this way, the limit block 34 is positioned, and welding the limit block 34 to the hydraulic support structural member 33 can complete the installation of the limit block 34.
[0045] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.
Claims
1. An auxiliary positioning device for a limit block of a hydraulic support structural member, characterized in that: It includes a positioning reference seat (1), a connecting gauge (2), and a positioning card board (3); the positioning reference seat (1) includes a connecting rod (4), and a fixed wheel (8) is rotatably provided at each end of the connecting rod (4), and a circle of positioning bolts (12) is provided on the fixed wheel (8); one end of the connecting gauge (2) is sleeved outside the connecting rod (4), and a waist-shaped groove (13) is provided on the connecting gauge (2); the positioning card board (3) includes a triangular plate (20) and an L-shaped plate (21) fixedly connected to each other, and a fixing hole (22) and an arc hole (23) are provided on the triangular plate (20); a first fixing bolt (30) passes through the fixing hole (22) and the waist-shaped groove (13) and is screwed with a fixing nut (32), and a second fixing bolt (31) passes through the arc hole (23) and the waist-shaped groove (13) and is screwed with a fixing nut (32); a pointer seat (17) is slidably provided at the upper end of the connecting gauge (2), and a first pointer (19) on the pointer seat (17) points to the axis of the first fixing bolt (30); a second pointer (24) is rotatably provided on the triangular plate (20), and the second pointer (24) is in contact with the connecting gauge (2).
2. The auxiliary positioning device for the limit block of the structural member of the hydraulic support according to claim 1, wherein: A bearing sleeve (5) is sleeved at each end of the outer cylindrical surface of the connecting rod (4), and a rolling bearing (6) is sleeved outside each bearing sleeve (5); a first fixing screw (7) is screwed on the bearing sleeve (5), and the tip of the first fixing screw (7) is tightly pressed against the outer cylindrical surface of the connecting rod (4), and the bearing sleeve (5) is fixed to the outside of the connecting rod (4) through the first fixing screw (7).
3. The auxiliary positioning device for the limit block of the hydraulic support structural member according to claim 2, characterized in that: The inner ring of the rolling bearing (6) is fixedly sleeved outside the bearing sleeve (5), and the fixed wheel (8) is fixedly sleeved outside the outer ring of the rolling bearing (6); the fixed wheel (8) includes an inner ring (9), and an outer ring (10) is sleeved outside the inner ring (9), the inner ring (9) and the outer ring (10) are coaxially arranged, and the outer ring (10) and the inner ring (9) are fixedly connected to each other through three radially arranged connecting blocks (11); three threaded holes are evenly arranged along the circumference on the side wall of the outer ring (10), the three threaded holes are arranged radially along the outer ring (10), and a positioning bolt (12) is screwed in each threaded hole respectively, and the tip of the positioning bolt (12) faces the outside of the outer ring (10).
4. The auxiliary positioning device for the limit block of the structural member of a hydraulic support according to claim 1, characterized in that: The connecting gauge (2) is a long strip-shaped plate structure, and the waist-shaped groove (13) penetrating through the front and back is provided in the middle of the connecting gauge (2), and the length direction of the waist-shaped groove (13) is the same as the length direction of the connecting gauge (2).
5. The auxiliary positioning device for the limit block of the hydraulic support structural member according to claim 4, characterized in that: A connecting ball (14) is fixedly provided at one end of the connecting gauge (2), and a through hole is provided on the connecting ball (14), and the axis of the through hole is perpendicular to the connecting gauge (2); the through hole on the connecting ball (14) of the connecting gauge (2) is sleeved outside the connecting rod (4).
6. The auxiliary positioning device for the limit block of the hydraulic support structural member according to claim 5, characterized in that: At the upper side edge of the front end face of the connecting gauge (2), a length scale line (15) is provided. On the upper end face of the connecting gauge (2), a T-shaped groove (16) is provided. Inside the T-shaped groove (16), the pointer seat (17) is slidably arranged. At the lower end of the pointer seat (17), a T-shaped block is fixedly arranged, and the T-shaped block is slidably clamped inside the T-shaped groove (16). On the pointer seat (17), a threaded through hole is provided, and a second fixing screw (18) is screwed inside the threaded through hole. The tip of the second fixing screw (18) faces the inner bottom surface of the T-shaped groove (16). At the front end of the pointer seat (17), the first pointer (19) is fixedly arranged, and the end of the first pointer (19) far from the pointer seat (17) points to the length scale line (15).
7. The auxiliary positioning device for the limit block of the structural member of the hydraulic support according to claim 1, wherein: The triangular plate (20) is a vertically arranged plate-like structure in the shape of an isosceles triangle, and the lengths of the first side and the second side of the triangular plate (20) are equal. At the junction of the first side and the second side of the triangular plate (20), the fixing hole (22) is provided. At the junction of the second side and the third side of the triangular plate (20), the arc hole (23) is provided, and the axis of the arc hole (23) is located at the axis of the fixing hole (22). At the junction of the first side and the third side of the front end face of the triangular plate (20), the second pointer (24) is provided. One end of the second pointer (24) is inserted with a third fixing screw (25), and the third fixing screw (25) is screwed on the front end face of the triangular plate (20) at the junction of the first side and the third side. At the front end face of the triangular plate (20), an arc-shaped angle scale line (26) is provided, and the end of the second pointer (24) far from the third fixing screw (25) faces the angle scale line (26).
8. An auxiliary positioning device for a limit block of a hydraulic support structural member according to claim 7, characterized in that: The L-shaped plate (21) includes a transverse section (27) and a longitudinal section (28), and the transverse section (27) and the longitudinal section (28) are perpendicular to each other. One end of the transverse section (27) is fixedly connected to one end of the longitudinal section (28), and the end of the transverse section (27) far from the longitudinal section (28) is fixedly connected to the middle of the third side of the triangular plate (20). The transverse section (27) is perpendicular to the third side of the triangular plate (20), and the longitudinal section (28) is parallel to the third side of the triangular plate (20), and the longitudinal section (28) is located on the side of the transverse section (27) far from the third fixing screw (25). At the middle of the side of the transverse section (27) far from the longitudinal section (28), an auxiliary handle (29) is fixedly arranged.