A cable clamp connection device for a coal mining machine

Abstract

This utility model discloses a cable clamp connection device for a coal mining machine, including a connecting frame. The connecting frame is provided with a first connecting part for connecting a cable-dragging device and a second connecting part for connecting cable clamps. The size of the second connecting part is adjustable to facilitate connection with different types of cable clamps. By setting the connecting frame as the main load-bearing body of the entire device, it bears the tensile and torsional forces generated by the cable clamps and cables during movement. The second connecting part for connecting cable clamps is set to be adjustable in size, and its interface size for connecting cable clamps can be flexibly adjusted according to the specific model and connection size of the cable clamps to be connected according to the actual needs on site. This greatly improves the versatility of the connection device, enabling it to adapt to different specifications of cable clamps and improving the flexibility of equipment deployment. When changing the type of coal mining machine or cable clamp, it is not necessary to change the connection device at the same time, reducing the complexity and time of equipment replacement.

Description

Technical Field

[0001] This utility model relates to the field of coal mining machine technology, and specifically to a coal mining machine cable clamp connection device. Background Technology

[0002] In underground coal mine working faces, coal mining machines need to use cable dragging devices to move cable clamps to ensure the orderly deployment and retraction of cables. Traditional cable clamp connection devices have a fixed structure and can usually only accommodate a single type of cable clamp. However, in actual production, due to differences in coal mining machine models, working face conditions, and cable specifications, the types and sizes of cable clamps used are also diverse. The main types of cable clamps used with coal mining machine cable dragging devices are C-type, O-type, H-type, and U-type. This variety of structural models and sizes creates inconvenience for cable clamp selection and cable dragging device design.

[0003] This necessitates the use of multiple connection devices. Changing the model and size of the coal mining machine cable clamps necessitates changing the connection method of the cable-dragging device. Once the cable-dragging device design is finalized, the model and size of the cable clamps cannot be changed, making it extremely inconvenient to use. This increases equipment management costs and the complexity of replacement operations, reduces production efficiency, and lacks versatility and adaptability. Utility Model Content

[0004] To address the shortcomings of existing technologies, a cable clamp connection device for coal mining machines is proposed, which solves the problem in the background technology that the cable clamp model and size cannot be changed once the cable dragging device design is finalized.

[0005] To achieve the above objectives, the present invention proposes the following technologies: A coal mining machine cable clamp connection device includes a connecting frame, on which a first connecting part for connecting a drag cable device and a second connecting part for connecting a cable clamp are provided. The second connecting part is adjustable in size to facilitate connection with different types of cable clamps.

[0006] Furthermore, the second connecting part and the first connecting part are symmetrically arranged about the connecting frame, and the first connecting part is fixedly connected to the middle of the connecting frame.

[0007] Furthermore, the second connecting part specifically comprises two second connecting plates, which are disposed opposite to each other on the surface of the connecting frame, and the distance between them is adjustable.

[0008] Furthermore, a bidirectional threaded screw is rotatably connected to the connecting frame, and two second connecting plates are respectively threaded to both sides of the bidirectional threaded screw.

[0009] Furthermore, positioning plates are fixed on the left and right sides of the connecting frame, and the bidirectional threaded screw is rotatably connected between the two positioning plates, with its end extending to the outside of the positioning plates.

[0010] Furthermore, bending plates are arranged opposite each other on the front and rear sides of the connecting frame, and a sliding groove is formed between the bending plates and the connecting frame, and the second connecting plate is slidably connected to the sliding groove.

[0011] Furthermore, the second connecting plate is slidably connected between the two bent plates on both sides, and sliders for sliding connection with the groove are fixed on both sides of the bottom of the second connecting plate.

[0012] Furthermore, the first connecting part specifically comprises two first connecting plates, which form a groove-shaped connecting lug, and a first connecting hole is provided on the first connecting plate to facilitate the connection of the towing cable device.

[0013] Furthermore, the second connecting plate is provided with a second connecting hole. By adjusting the distance between the two second connecting plates, the second connecting hole can be connected and fixed with different cable clamps.

[0014] Compared with the prior art, the comprehensive effects brought about by this utility model include: By setting the connecting frame as the main load-bearing body of the entire device, it withstands the tensile and torsional forces generated by the cable clamps and cables during movement. The second connecting part of the cable clamp is set to be adjustable in size. Its interface size for connecting the cable clamp can be flexibly adjusted according to the specific model and connection size of the cable clamp to be connected according to the actual needs on site. This greatly improves the versatility of the connecting device, which can adapt to different specifications of cable clamps and improve the flexibility of equipment deployment. When changing the coal mining machine or cable clamp type, there is no need to change the connecting device at the same time, reducing the complexity and time of equipment replacement. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is a cross-sectional structural diagram of an embodiment of the present utility model; Figure 3 This is a schematic diagram of the structure when the first connecting part and the second connecting part are symmetrical in an embodiment of this utility model.

[0016] Legend: 1. Connecting frame; 2. Second connecting plate; 3. Two-way threaded screw; 4. Positioning plate; 5. Bending plate; 6. Slide groove; 7. First connecting plate; 8. First connecting hole; 9. Second connecting hole. Detailed Implementation

[0017] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] In this document, terms such as “up,” “down,” “left,” “right,” and “top” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] The purpose of this application is to overcome the shortcomings of the prior art and provide a coal mining machine cable clamp connection device with reasonable structure, strong versatility and convenient adjustment. It can adapt to different types and sizes of cable clamps through simple adjustment, effectively improving the versatility of the equipment and reducing maintenance costs.

[0020] like Figures 1 to 3 As shown, a coal mining machine cable clamp connection device includes a connecting frame 1. The connecting frame 1 is provided with a first connecting part for connecting a drag cable device and a second connecting part for connecting a cable clamp. The size of the second connecting part is adjustable to facilitate connection with different types of cable clamps.

[0021] The connecting frame 1 is set as the main load-bearing body of the entire device, bearing the tensile and torsional forces generated by the cable clamps and cables during movement. The first connecting part is fixed or integrated on the connecting frame 1 and is used to make hinged or fixed connections with the cable dragging device of the coal mining machine (such as cable dragging chain, cable dragging frame, etc.). The second connecting part is set to be adjustable in size. The interface size (such as width, hole spacing, etc.) used to connect the cable clamps is no longer fixed, but can be flexibly adjusted according to the specific model and connection size of the cable clamps to be connected according to the actual needs on site.

[0022] The above-described design significantly improves the versatility of the connecting device. By making the second connecting part adjustable, one set of connecting devices can replace multiple fixed-size connecting devices, adapting to different specifications of cable clamps and increasing the flexibility of equipment deployment. When changing the type of coal mining machine or cable clamp, there is no need to change the connecting device simultaneously, reducing the complexity and time required for equipment replacement. Therefore, this design fundamentally solves the technical problem of existing connecting devices being highly specialized and lacking versatility.

[0023] In the coal mining machine cable clamp connection device of this embodiment, the second connection part and the first connection part are symmetrically arranged about the connection frame 1, and the first connection part is fixedly connected to the middle part of the connection frame 1.

[0024] In this embodiment, the component layout on the connecting frame 1 has been optimized. The first connecting part is located in the middle of the connecting frame 1, while the second connecting part is symmetrically arranged with respect to the first connecting part about the connecting frame 1. The symmetrical layout means that the force transmission path is more reasonable.

[0025] When the cable-dragging device pulls the entire device and cable clamp through the first connecting part, the force is evenly and symmetrically transmitted through the first connecting part in the middle of the connecting frame 1 to the adjustable second connecting parts on both sides, and then distributed to the cable clamp. This force distribution avoids the generation of additional deflection torque or torsional torque when the device is under force, ensuring the stability and reliability of the connecting device under heavy load and high-frequency reciprocating motion conditions. It effectively prevents premature fatigue damage or connection failure of the connecting parts due to uneven force, and extends the service life of the device.

[0026] This embodiment specifies the concrete implementation of the second connecting part. The second connecting part is specifically defined as two opposing second connecting plates 2. The cable clamp usually also has two connecting lugs. The connection is achieved by inserting the two second connecting plates 2 between the two lugs of the cable clamp and using pins or bolts through the holes on the second connecting plates 2 and the cable clamp lugs.

[0027] The system employs two opposing, adjustable-spaced second connecting plates 2, which are simple and reliable in structure. This is an ideal way to achieve compatibility with standard cable clamp lug-type connection interfaces. Its compatibility range is precise, and by adjusting the distance between the two plates, it can accurately match different gaps between the two connecting lugs of different cable clamps. Moreover, the connection is stable, with a double-plate clamping connection that provides a large contact area, good connection rigidity, and is not easy to loosen. In addition, assembly is convenient, the adjustment process is intuitive, and it is easy for operators to understand and execute.

[0028] In the coal mining machine cable clamp connection device of this embodiment, a bidirectional threaded screw 3 is rotatably connected to the connecting frame 1, and two second connecting plates 2 are respectively threaded to both sides of the bidirectional threaded screw 3.

[0029] This embodiment provides a preferred and efficient mechanical structure for adjusting the spacing of the second connecting plates 2. Specifically, a bidirectional threaded screw 3 is mounted on the connecting frame 1, with threads at both ends having opposite directions of rotation. The two second connecting plates 2 have threaded holes machined to match the screw threads and are screwed onto both sides of the screw, respectively.

[0030] Using a bidirectional threaded screw 3 as the adjustment mechanism offers multiple advantages, including precise adjustment, effortless operation, and good self-locking. When the bidirectional threaded screw 3 is rotated, the two second connecting plates 2 move synchronously towards or away from each other due to the opposite thread direction, achieving synchronous, equidistant, and linear adjustment of the spacing, ensuring the symmetry and accuracy of the adjustment. The threaded connection has a certain degree of self-locking, effectively preventing the second connecting plates 2 from moving on their own in a vibration environment, ensuring the stability of the connection spacing, i.e., high operational reliability.

[0031] In the coal mining machine cable clamp connection device of this embodiment, positioning plates 4 are fixed on the left and right sides of the connecting frame 1, and the bidirectional threaded screw 3 is rotatably connected between the two positioning plates 4, with its end extending to the outside of the positioning plates 4.

[0032] This embodiment specifies the installation method of the bidirectional threaded screw 3. Stable and reliable rotational support is provided for the screw by fixing positioning plates 4 on its left and right sides. Extending the end of the screw to the outside of the positioning plates 4 facilitates operation from the side.

[0033] The positioning plate 4 serves a dual purpose of support and positioning. First, it stably supports the lead screw on the connecting frame 1, ensuring the concentricity and stability of the lead screw during rotation and preventing the lead screw from bending due to force.

[0034] Preferably, a limiting ring is provided at the ends of the threads on both sides of the bidirectional threaded screw 3. After installation, the limiting ring fits against the inner side of the positioning plate 4, which restricts the axial movement of the screw and ensures the accuracy of the adjustment mechanism.

[0035] A further preferred design is to have a hexagonal slot at the end of the lead screw, with the end of the lead screw exposed. This design allows the operator to use standard tools such as wrenches to engage the hexagonal slot and rotate the lead screw, thus reducing the operating space requirements and making it very convenient for adjustment in narrow downhole spaces.

[0036] In the coal mining machine cable clamp connection device of this embodiment, bending plates 5 are arranged opposite to each other on the front and rear sides of the connecting frame 1, and a sliding groove 6 is formed between the bending plates 5 and the connecting frame 1, and the second connecting plate 2 is slidably connected to the sliding groove 6.

[0037] The bending plates 5 on the front and rear sides limit and guide the second connecting plate 5 on the upper surface of the connecting frame 1 from both sides, thereby improving the sliding stability of the second connecting plate 5.

[0038] In the coal mining machine cable clamp connection device of this embodiment, the second connecting plate 2 is slidably connected between the bending plates 5 on both sides, and the bottom sides of the second connecting plate 2 are respectively fixed with sliders for sliding connection with the slide groove 6.

[0039] By setting a groove 6 made of bent plate 5 on the connecting frame 1, and allowing the second connecting plate 2 to cooperate with the groove 6 through the bottom slider, a sliding connection is formed.

[0040] The design of the groove 6 and the slider provides guidance and anti-torsion functions, ensuring the linear movement of the second connecting plate 2: the groove 6 forcibly constrains the second connecting plate 2 to only move linearly along its groove direction (i.e., the direction of adjusting the spacing), completely eliminating the deflection and jamming phenomena that may occur in the second connecting plate 2 during adjustment and force application, making the adjustment process smooth and the working state stable; the structure of the slider embedded in the groove 6 increases the contact area between the second connecting plate 2 and the connecting frame 1, making the connection more stable and improving the positional stability after sliding and adjustment.

[0041] In the coal mining machine cable clamp connection device of this embodiment, the first connection part is specifically two first connection plates 7, the two first connection plates 7 form a groove-shaped connection lug, and the first connection plate 7 is provided with a first connection hole 8 to facilitate the connection of the drag cable device.

[0042] This embodiment defines the specific structure of the first connecting part. It uses two first connecting plates 7 to form a slotted connecting lug (or "fork lug"), with first connecting holes 8 formed on the plates. This allows for easy insertion into the corresponding connecting part of the cable-dragging device. A pin then passes through both the first connecting holes 8 on the first connecting plates 7 and the connecting hole of the cable-dragging device simultaneously, achieving a hinged connection. This hinged connection not only provides a strong connection, capable of withstanding large tensile forces and impacts, but also allows relative rotation between the connecting device and the cable-dragging device within a certain angle range. This effectively accommodates the swaying and undulation of the cable clamp during coal mining machine operation, avoiding stress concentration and structural damage caused by rigid connections.

[0043] Preferably, in this embodiment, the first connecting plate 7 can also be configured as an adjustable-distance structure, that is, it adopts the same installation and adjustment structure as the second connecting plate 2, such as... Figure 3 As shown, the entire connecting device is symmetrical from top to bottom. The above-mentioned arrangement allows for adjustment of the distance between the two first connecting plates 7, thereby enabling it to work with different towing cable devices, further expanding the scope of application of this application and improving its practicality.

[0044] In the coal mining machine cable clamp connection device of this embodiment, the second connecting plate 2 is provided with a second connecting hole 9. By adjusting the distance between the two second connecting plates 2, the connection and fixation of the second connecting hole 9 with different cable clamps can be achieved.

[0045] This embodiment further clarifies the specific connection method between the second connecting plate 2 and the cable clamp. Specifically, a second connecting hole 9 is formed on the second connecting plate 2. The second connecting hole 9 is the key structure for ultimately achieving a pin-connected or bolt-connected connection with the cable clamp. The fundamental purpose of adjusting the distance between the two second connecting plates 2 is to precisely align the center distance of the second connecting holes 9 on the two second connecting plates 2 with the center distance of the two connecting holes on the cable clamp to be connected. Once aligned, a pin or bolt can be inserted to complete the fastening connection. This design achieves a one-to-many effect, solving the matching problem with cable clamps of various hole spacing specifications through a simple spacing adjustment action, demonstrating the high practicality and ingenuity of this invention.

[0046] In summary, through the mutual cooperation and synergistic effect of the above-mentioned technical features, the present invention has successfully constructed a coal mining machine cable clamp connection device that is highly versatile, easy to adjust, structurally stable, and durable. It effectively solves many problems existing in the background technology and has significant technological progress and good economic benefits.

[0047] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "rotation", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0048] Although embodiments of the present invention have been shown and described in detail, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shearer cable clamp connection device, characterised in that, The device includes a connecting frame, which has a first connecting part for connecting a tow cable device and a second connecting part for connecting a cable clamp. The second connecting part is adjustable in size to facilitate connection with different types of cable clamps.

2. A coal cutter cable clamp connection device as claimed in claim 1, characterised in that, The second connecting part and the first connecting part are symmetrically arranged about the connecting frame, and the first connecting part is fixedly connected to the middle of the connecting frame.

3. A coal cutter cable clamp connection device as claimed in claim 1, characterised in that, The second connecting part specifically consists of two second connecting plates, which are arranged opposite to each other on the surface of the connecting frame, and the distance between them is adjustable.

4. A coal cutter cable clamp connection device as claimed in claim 3, characterised in that, A bidirectional threaded screw is rotatably connected to the connecting frame, and two second connecting plates are respectively threaded to both sides of the bidirectional threaded screw.

5. A coal mining machine cable clamp connection device according to claim 4, characterized in that, Positioning plates are fixed on the left and right sides of the connecting frame, and the bidirectional threaded screw is rotatably connected between the two positioning plates, with its end extending to the outside of the positioning plates.

6. A coal mining machine cable clamp connection device according to claim 5, characterized in that, The connecting frame has bending plates arranged opposite each other on its front and rear sides, and a sliding groove is formed between the bending plates and the connecting frame. The second connecting plate is slidably connected to the sliding groove.

7. A coal mining machine cable clamp connection device according to claim 6, characterized in that, The second connecting plate is slidably connected between the two bent plates on both sides, and the bottom sides of the second connecting plate are respectively fixed with sliders for sliding connection with the slide groove.

8. A coal mining machine cable clamp connection device according to claim 2, characterized in that, The first connecting part specifically consists of two first connecting plates, which form a groove-shaped connecting lug. The first connecting plates have first connecting holes to facilitate the connection of the towing cable device.

9. A coal mining machine cable clamp connection device according to claim 3, characterized in that, The second connecting plate has a second connecting hole. By adjusting the distance between the two second connecting plates, the second connecting hole can be connected and fixed with different cable clamps.

Images