Method for limiting distance of torque-limiting low-speed contact type backstop

Abstract

The invention discloses a distance limiting method for a torque-limiting low-speed contact type backstop, and belongs to the technical field of backstops, and the backstop comprises yoke plates which are symmetrically arranged, pin shafts for fixing the positions of the two groups of yoke plates, pin rollers rotationally mounted between the two groups of yoke plates, and wedge blocks uniformly mounted between the two groups of yoke plates, the yoke plate is provided with a wedge block hole matched with the wedge block, and the outer side of the wedge block hole is provided with an arc-shaped guide groove. The arc-shaped guide groove is formed in the outer side of the wedge block hole, one end of the torsion spring can be inserted into the arc-shaped guide groove in the installation process, then the torsion spring is used in cooperation with an adjusting mechanism composed of the driven fluted disc, the positioning hole and the driving fluted disc, and the end of the torsion spring is limited in the positioning hole; the driving fluted disc rotates to drive the driven fluted discs to rotate to compress the torsion spring, so that the elastic force applied to the wedge block during use is improved, the reset rate of the wedge block is increased, the distance of reverse movement of the conveyor under control of the backstop is reduced, and the practicability is higher.

Description

Technical Field

[0001] The invention relates to a distance limiting device, in particular to a distance limiting method of a torque-limiting low-speed contact backstop, and belongs to the technical field of backstops. Background Art

[0002] In underground mining belt conveyors, when the conveyor stops running suddenly and the gravity of the ore may cause the conveyor belt to move in the opposite direction, the backstop can effectively prevent the conveyor belt from reversing, protect the conveyor belt, drive roller and other components, and prevent the ore from slipping and causing safety accidents.

[0003] In the prior art, for example, the invention with application number 202323134935.2 discloses a wedge body for a contact type backstop and a contact type backstop. In order to solve the problem that the different rotation angles of the torsion spring result in uneven force applied to the wedge block, which causes some wedge blocks to wear faster and reduces the service life of the backstop, one end of the torsion spring (first torsion spring, second torsion spring) of the wedge body for the contact type backstop is clamped on the wedge block, and the other end is clamped in the hole of the yoke plate. In this way, the initial force value applied by the torsion spring to the wedge block is consistent, and the initial stopping force applied by the torsion spring to the wedge block is the same. When the backstop is stopped, all wedge blocks can be stopped synchronously, thereby reducing the stopping force applied to a single wedge block and improving the service life of the overall backstop.

[0004] Similar to the above application, there are still some shortcomings:

[0005] The magnitude of the torsion spring force has a certain influence on the reset speed of the wedge block. When the torsion spring force is large, the reset speed of the wedge block can be increased, thereby reducing the reverse distance of the conveyor. However, after the torsion spring is installed, the elastic force provided by the torsion spring to the wedge block is fixed and cannot be adjusted according to demand, which is inconvenient for the distance control of the backstop.

[0006] Therefore, a torque-limited low-speed contact backstop machine distance limiting method is designed to optimize the above problems. Summary of the invention

[0007] The main purpose of the present invention is to provide a torque-limiting low-speed contact backstop machine distance limiting method to solve the problems raised in the above background technology.

[0008] The purpose of the present invention can be achieved by adopting the following technical solutions:

[0009] A torque-limiting low-speed contact backstop machine distance limiting method, including yoke plates arranged symmetrically, pins for fixing the positions of two sets of yoke plates, rollers rotatably installed between the two sets of yoke plates, and wedge blocks evenly installed between the two sets of yoke plates, the yoke plates are provided with wedge block holes that cooperate with the wedge blocks, the outer side of the wedge block holes are provided with arc guide grooves, a torsion spring is installed between the yoke plate and the ends of the wedge block, one end of the torsion spring is fixed on the wedge block, and the other end of the torsion spring passes through the inside of the arc guide groove, and an elastic force adjustment mechanism for compressing the end of the torsion spring is provided on the outer side of the yoke plate.

[0010] Preferably, the arc-shaped guide groove is semicircular in shape, and the arc-shaped guide groove and the wedge block hole have the same center.

[0011] Preferably, a pin hole cooperating with the pin shaft is formed on the yoke plate, the pin shaft passes through the pin hole, and a positioning nut is installed at the end of the pin hole.

[0012] Preferably, a roller hole cooperating with the roller is provided on the yoke plate, and the end of the roller is rotatably mounted inside the roller hole.

[0013] Preferably: the elastic force adjustment mechanism includes a driven gear disc, a positioning hole, a driving gear disc and a positioning mechanism, the driven gear disc is located on the outer side of the yoke plate and is rotatably installed on the end of the wedge block, the driven gear disc is provided with a positioning hole that cooperates with the end of the torsion spring, the outer side of the yoke plate is rotatably installed with a driving gear disc, the outer side of the driving gear disc is engaged with the positioning hole, and the outer side of the yoke plate is provided with a positioning mechanism for limiting the driving gear disc.

[0014] Preferably: the positioning mechanism includes a threaded hole, a positioning block and a positioning screw, the threaded holes are evenly arranged in a circular array on the yoke plate, a positioning block is provided on the outside of the threaded hole, and the positioning block is inserted into the tooth groove of the active gear plate, and a positioning screw is threadedly installed on the threaded hole, and the positioning screw passes through the positioning block.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention provides an arc guide groove on the outside of the wedge block hole. One end of the torsion spring is inserted into the arc guide groove during installation. The torsion spring is used in conjunction with an adjustment mechanism consisting of a driven toothed disc, a positioning hole and a driving toothed disc. The end of the torsion spring is confined inside the positioning hole. The rotation of the driving toothed disc can drive the rotation of multiple groups of driven toothed discs to compress the torsion spring, thereby increasing the elastic force applied to the wedge block during use, accelerating the reset rate of the wedge block, and reducing the reverse movement distance of the conveyor under the control of the backstop. The torsion spring is more practical.

[0017] 2. The present invention can stably limit the position of the active gear disc through the positioning mechanism composed of the threaded hole, the positioning block and the positioning screw, thereby ensuring the elastic effect of the torsion spring during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the assembly of the present invention;

[0019] Figure 2 It is a front view of the present invention;

[0020] Figure 3 For the present invention Figure 1 Enlarged view of point A in the middle;

[0021] Figure 4 It is the front view of the yoke plate of the present invention.

[0022] In the figure: 1. yoke plate;

[0023] 2. Pin shaft; 201. Pin hole; 202. Positioning nut;

[0024] 3. Roller; 301. Roller hole;

[0025] 4. Wedge; 401. Wedge hole;

[0026] 5. Torsion spring;

[0027] 6. Arc guide groove;

[0028] 7. Driven gear plate;

[0029] 8. Positioning hole;

[0030] 9. Active gear plate;

[0031] 10. Threaded hole; 1001. Positioning block; 1002. Positioning screw. DETAILED DESCRIPTION

[0032] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them.

[0033] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the invention claimed for protection, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0036] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is usually placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0037] Example 1

[0038] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this embodiment proposes a torque-limiting low-speed contact backstop machine distance limiting method, including yoke plates 1 symmetrically arranged, pin shafts 2 for fixing the positions of two groups of yoke plates 1, rollers 3 rotatably installed between the two groups of yoke plates 1, and wedge blocks 4 evenly installed between the two groups of yoke plates 1, a wedge block hole 401 cooperating with the wedge block 4 is opened on the yoke plate 1, an arc guide groove 6 is opened on the outer side of the wedge block hole 401, a torsion spring 5 is installed between the yoke plate 1 and the end of the wedge block 4, one end of the torsion spring 5 is fixed on the wedge block 4, and the other end of the torsion spring 5 passes through the inside of the arc guide groove 6, and an elastic force adjustment mechanism for compressing the end of the torsion spring 5 is provided on the outer side of the yoke plate 1.

[0039] In this application, the patent with publication number CN221054180U is used as a comparative document. This application only improves the wedge structure in the check valve. The operating principle of the check valve is the same as the prior art, and this application does not go into too much detail. When in use, during the installation of the torsion spring 5, first insert one end of the torsion spring 5 into the hole on the wedge block 4, and then the other end of the torsion spring 5 passes through the inside of the arc guide groove 6 and extends to the inside of the elastic force adjustment mechanism. The elastic force of the torsion spring 5 can be adjusted by the elastic force adjustment mechanism to adjust the reset rate of the wedge block 4 during use and reduce the distance of the reverse movement of the conveyor under the control of the check valve.

[0040] Example 2

[0041] The solution in Example 1 is further introduced below in combination with a specific working method, as described below:

[0042] like Figure 1As shown, as a preferred embodiment, based on the above method, further, the shape of the arc guide groove 6 is semicircular, and the arc guide groove 6 and the wedge block hole 401 have the same center, which has a larger adjustment space for the end of the torsion spring 5 and is more practical.

[0043] like Figure 1 As shown, as a preferred embodiment, on the basis of the above method, further, a pin hole 201 cooperating with the pin shaft 2 is opened on the yoke plate 1, the pin shaft 2 passes through the pin hole 201, and a positioning nut 202 is installed at the end of the pin hole 201. When the yoke plate 1 is installed and fixed, the pin shaft 2 passes through the inside of the pin hole 201, and multiple groups of pin shafts 2 are used to ensure that the two groups of yoke plates 1 are in a horizontal state, and then the positioning nut 202 is installed at the end of the pin shaft 2 to fix the position of the yoke plate 1.

[0044] like Figure 1 As shown, as a preferred embodiment, on the basis of the above method, further, a roller hole 301 cooperating with the roller 3 is opened on the yoke plate 1, and the end of the roller 3 is rotatably installed inside the roller hole 301. During the use of the device, the roller 3 contacts the outer side of the conveyor roller to ensure the stable rotation of the roller.

[0045] like Figure 1 As shown, as a preferred embodiment, on the basis of the above-mentioned method, further, the elastic force adjustment mechanism includes a driven gear disc 7, a positioning hole 8, a driving gear disc 9 and a positioning mechanism. The driven gear disc 7 is located on the outer side of the yoke plate 1 and is rotatably installed on the end of the wedge block 4. The driven gear disc 7 is provided with a positioning hole 8 that cooperates with the end of the torsion spring 5. The outer side of the yoke plate 1 is rotatably installed with a driving gear disc 9, and the outer side of the driving gear disc 9 is engaged with the positioning hole 8. The outer side of the yoke plate 1 is provided with a positioning mechanism for limiting the driving gear disc 9.

[0046] When installing the torsion spring 5, the end of the torsion spring 5 passes through the inside of the arc guide groove 6 and is directly inserted into the inside of the positioning hole 8. After all the torsion springs 5 ​​are installed on the yoke plate 1, the active toothed disc 9 can be controlled to rotate, driving multiple groups of driven toothed discs 7 to rotate with the end of the wedge block 4 as the axis, thereby squeezing the end of the torsion spring 5, adjusting the elastic force applied by the torsion spring 5 to the wedge block 4, and then using the positioning mechanism to locate the position of the active toothed disc 9, and the installation and adjustment of the device is completed.

[0047] like Figure 1 As shown, as a preferred embodiment, on the basis of the above method, further, the positioning mechanism includes a threaded hole 10, a positioning block 1001 and a positioning screw 1002, the threaded holes 10 are evenly arranged on the yoke plate 1 in a circular array, a positioning block 1001 is provided on the outer side of the threaded hole 10, and the positioning block 1001 is inserted into the tooth groove of the active gear plate 9, and a positioning screw 1002 is threadedly installed on the threaded hole 10, and the positioning screw 1002 passes through the positioning block 1001.

[0048] When positioning the active gear disc 9, the positioning block 1001 is inserted into the tooth groove of the active gear disc 9, and then the positioning screw 1002 passes through the inside of the positioning block 1001 and is then rotated and installed into the inside of the threaded hole 10, and the positioning of the active gear disc 9 is completed.

[0049] Example 3

[0050] The schemes in Example 1 and Example 2 are further introduced below in combination with specific working methods, as described below for details:

[0051] When in use, during the installation of the torsion spring 5, one end of the torsion spring 5 is first inserted into the hole on the wedge block 4, and then the other end of the torsion spring 5 passes through the inside of the arc guide groove 6 and is inserted into the positioning hole 8 of the driven gear plate 7. After the torsion spring 5 is installed, the roller 3 and the pin shaft 2 are positioned and installed to complete the assembly of the wedge body. When the elastic force of the torsion spring 5 needs to be adjusted, the active gear plate 9 is controlled to rotate, driving multiple groups of driven gear plates 7 to rotate with the end of the wedge block 4 as the axis, and then the end of the torsion spring 5 is squeezed to adjust the elastic force applied by the torsion spring 5 to the wedge block 4, and then the positioning block 1001 is inserted into the tooth groove of the active gear plate 9, and then the positioning screw 1002 is passed through the inside of the positioning block 1001 and rotated to the inside of the threaded hole 10. The positioning of the active gear plate 9 and the adjustment of the elastic force of the torsion spring 5 are completed.

[0052] The above description is only a further embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and concepts of the present invention within the scope disclosed by the present invention, which belong to the protection scope of the present invention.

Claims

1. A torque-limiting low-speed contact backstop machine distance limiting method, comprising yoke plates (1) symmetrically arranged, a pin (2) for fixing the positions of two sets of yoke plates (1), a roller (3) rotatably mounted between the two sets of yoke plates (1), and a wedge (4) evenly mounted between the two sets of yoke plates (1), characterized in that: A wedge hole (401) matching with the wedge (4) is provided on the yoke plate (1), an arc guide groove (6) is provided on the outer side of the wedge hole (401), a torsion spring (5) is installed between the yoke plate (1) and the end of the wedge (4), one end of the torsion spring (5) is fixed on the wedge (4), and the other end of the torsion spring (5) passes through the inside of the arc guide groove (6), and an elastic force adjustment mechanism for compressing the end of the torsion spring (5) is provided on the outer side of the yoke plate (1).

2. A torque-limiting low-speed contact backstop machine distance limiting method according to claim 1, characterized in that: The shape of the arc-shaped guide groove (6) is semicircular, and the arc-shaped guide groove (6) and the wedge block hole (401) have the same center.

3. A torque-limiting low-speed contact backstop machine distance limiting method according to claim 2, characterized in that: A pin hole (201) matching with the pin shaft (2) is provided on the yoke plate (1); the pin shaft (2) passes through the pin hole (201); and a positioning nut (202) is installed at the end of the pin hole (201).

4. A torque-limiting low-speed contact backstop machine distance limiting method according to claim 3, characterized in that: A roller hole (301) matched with the roller (3) is provided on the yoke plate (1), and the end of the roller (3) is rotatably mounted inside the roller hole (301).

5. A torque-limiting low-speed contact backstop machine distance limiting method according to claim 4, characterized in that: The elastic force adjustment mechanism comprises a driven toothed disc (7), a positioning hole (8), a driving toothed disc (9) and a positioning mechanism. The driven toothed disc (7) is located on the outer side of the yoke plate (1) and is rotatably mounted on the end of the wedge block (4). The driven toothed disc (7) is provided with a positioning hole (8) which matches with the end of the torsion spring (5). The driving toothed disc (9) is rotatably mounted on the outer side of the yoke plate (1). The outer side of the driving toothed disc (9) meshes with the positioning hole (8). The outer side of the yoke plate (1) is provided with a positioning mechanism for limiting the position of the driving toothed disc (9).

6. A torque-limiting low-speed contact backstop machine distance limiting method according to claim 5, characterized in that: The positioning mechanism comprises a threaded hole (10), a positioning block (1001) and a positioning screw (1002); the threaded holes (10) are evenly arranged on the yoke plate (1) in an annular array; a positioning block (1001) is arranged outside the threaded hole (10), and the positioning block (1001) is inserted into the tooth groove of the active gear plate (9); a positioning screw (1002) is threadedly installed on the threaded hole (10), and the positioning screw (1002) passes through the positioning block (1001).

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