A tunneling machine-mounted anchor cable tensioning device

Abstract

This application provides an onboard anchor cable tensioning device for a tunneling machine, relating to the field of coal mining equipment technology. It includes a base slidably mounted on the tunneling machine body, a top plate mounted on the base, a rotating plate rotatably mounted on the top plate, and a tensioning jack slidably mounted on the rotating plate. The tunneling machine body is equipped with a first drive assembly for driving the base to slide, and a second drive assembly for driving the top plate to move up and down is provided between the base and the top plate. The tensioning jack is connected to the oil pump of the tunneling machine body via an oil circuit. This device directly installs the anchor cable tensioning device on the tunneling machine, allowing operators to conveniently perform tensioning and compression tests on the anchor cables while on the tunneling machine. It integrates support operations with tunneling operations, eliminating the need to transport separate tensioning equipment, improving work efficiency, and reducing the labor intensity of operators.

Description

Technical Field

[0001] This application relates to the field of coal mine equipment technology, and more specifically, to a machine-mounted anchor cable tensioning device for a tunneling machine. Background Technology

[0002] In underground coal mine tunneling faces, roadway roof support is a key link in ensuring safe production. As an important means of strengthening support, the tension of anchor cable support is directly related to the support effect. At present, underground anchor cable tensioning operations generally use pneumatic tensioning tools or manual tensioning tools.

[0003] Pneumatic tensioning devices require additional air duct connections, resulting in problems such as high noise levels, slow tensioning speed, and easy damage and leakage of the pipeline. Manual tensioning devices rely on manpower, which is labor-intensive, inefficient, and the tensioning force is difficult to control evenly. Both of these traditional methods have problems such as cumbersome procedures and low work efficiency. Furthermore, there are safety hazards such as oil pipe rupture during the tensioning process, which affect the continuity and safety of tunneling work. Summary of the Invention

[0004] The purpose of this application is to provide a tunneling machine-mounted anchor cable tensioning device, which can solve the technical problems that currently, the underground anchor cable tensioning operation generally uses pneumatic tensioning devices or manual tensioning devices. Both of these traditional methods have the problems of cumbersome procedures and low work efficiency, and are prone to safety hazards such as oil pipe rupture during the tensioning process, which affect the continuity and safety of tunneling work.

[0005] This application provides a tunneling machine-mounted anchor cable tensioning device, including a base slidably mounted on the tunneling machine body, a top plate mounted on the base, a rotating plate rotatably mounted on the top plate, and a tensioning jack slidably mounted on the rotating plate. The tunneling machine body is provided with a first driving component for driving the base to slide, and a second driving component for driving the top plate to move up and down is provided between the base and the top plate. The tensioning jack is connected to the oil pump of the tunneling machine body through an oil circuit.

[0006] Preferably, the first drive assembly includes a hydraulic cylinder, which is fixedly mounted on the tunneling machine body, and the piston rod of the hydraulic cylinder is connected to the base.

[0007] Preferably, the second drive assembly includes a scissor lift, which is fixedly mounted on the upper end of the base, and the top plate is fixedly mounted on the upper end of the scissor lift.

[0008] Preferably, a rotating shaft is fixedly provided at the lower end of the rotating plate, and the rotating shaft is rotatably disposed at the upper end of the top plate via a bearing.

[0009] Preferably, the top of the rotating plate is provided with a sliding groove, and a slider is slidably disposed in the sliding groove, and the tensioning jack is detachably disposed on the slider.

[0010] Preferably, a guide rod is fixedly installed on the tunneling machine body, and a guide block is fixedly installed on the base, with the guide block slidably sleeved on the guide rod.

[0011] Preferably, a support pulley is fixedly provided at the lower end of the rotating plate, and the support pulley is slidably disposed at the upper end of the top plate.

[0012] Preferably, a handle is fixedly provided on the rotating plate.

[0013] The beneficial effects of this utility model are:

[0014] This utility model provides a machine-mounted anchor cable tensioning device for tunneling machines. This device directly installs the anchor cable tensioning equipment on the tunneling machine, allowing operators to conveniently perform tensioning and pressure tests on the anchor cables from the machine. This integrates support and tunneling operations, eliminating the need for separate tensioning equipment, improving work efficiency, and reducing operator workload. The device achieves precise and flexible spatial positioning of the tensioning jack through multiple degrees of freedom adjustment (lifting, rotation, translation), ensuring the jack accurately reaches the required anchor cable position and guarantees tensioning quality. Furthermore, the device connects the tensioning jack's oil inlet to the existing hydraulic pump system on the tunneling machine, directly utilizing the machine's powerful hydraulic system as a power source. This eliminates the need for additional piping, resulting in faster, quieter, and more stable anchor cable tensioning, reducing the risk of pipe bursts and avoiding the drawbacks of traditional methods such as complex procedures and easily damaged piping. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall front view structure in some embodiments of this application;

[0017] Figure 2 This is a schematic diagram of a partial front view structure in some embodiments of this application;

[0018] Figure 3 This is a schematic diagram of the overall top view structure in some embodiments of this application;

[0019] Figure 4This is a cross-sectional view of a partial front view structure in some embodiments of this application.

[0020] The reference numerals in the attached figures are as follows:

[0021] 1. Tunneling machine body; 11. Guide rod;

[0022] 2. Base; 21. Guide block;

[0023] 3. Top slab;

[0024] 4. Rotating plate; 41. Rotating shaft; 42. Slide groove; 43. Slider; 44. Support pulley; 45. Handle;

[0025] 5. Tensioning jacks;

[0026] 6. First drive assembly; 61. Hydraulic cylinder;

[0027] 7. Second drive assembly; 71. Scissor lift. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0033] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0034] It should be noted that all electrical components appearing in this application are connected to an external main controller and mains power. The main controller can be a conventional known device such as a computer for control. All standard parts used in this application can be purchased from the market. The specific connection methods of each part are all conventional methods such as bolts, rivets and welding that are mature in the prior art. Furthermore, the machinery, parts and equipment are all conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art. These are prior art known to those skilled in the art and will not be described in detail here.

[0035] like Figures 1 to 4 As shown in the figure, this application embodiment provides a tunneling machine onboard anchor cable tensioning device, including a base 2 slidably disposed on the tunneling machine body 1, a top plate 3 disposed on the base 2, a rotating plate 4 rotatably disposed on the top plate 3, and a tensioning jack 5 slidably disposed on the rotating plate 4. A first drive assembly 6 for driving the base 2 to slide is provided on the tunneling machine body 1, and a second drive assembly 7 for driving the top plate 3 to rise and fall is provided between the base 2 and the top plate 3. The tensioning jack 5 is connected to the oil pump of the tunneling machine body 1 through an oil circuit.

[0036] In use, the first drive assembly 6 drives the base 2 to slide relative to the tunneling machine body 1 for a large-scale coarse adjustment of the horizontal position, so that the device is aligned with the anchor cable to be tensioned. Then, the second drive assembly 7 drives the top plate 3 to move vertically up and down relative to the base 2, thereby adjusting the working height of the device to match the height of the anchor cable tail. Then, the rotating plate 4 is rotated, and the tensioning jack 5 is slid to change the position of the tensioning jack 5 on the rotating plate 4 for fine adjustment, so that the center hole of the tensioning jack 5 is precisely aligned with the anchor cable. After alignment, the second drive assembly 7 raises the tensioning jack 5, and then the tensioning jack 5 is started to carry out the anchor cable tensioning operation.

[0037] This device directly mounts the anchor cable tensioning equipment onto the tunneling machine, allowing operators to conveniently conduct tensioning and pressure tests on the anchor cables from the machine. This integrates support and tunneling operations, eliminating the need for separate tensioning equipment, improving work efficiency, and reducing operator workload. Through adjustments of multiple degrees of freedom—lifting, rotating, and translating—the device enables precise and flexible spatial positioning of the tensioning jack 5, ensuring it accurately reaches the required anchor cable tensioning position and guarantees tensioning quality. Furthermore, the device connects the tensioning jack 5's oil inlet to the existing hydraulic pump system on the tunneling machine body 1, directly utilizing the machine's powerful hydraulic system as a power source. This eliminates the need for additional piping connections, resulting in faster, quieter, and more stable anchor cable tensioning, reducing the risk of pipe bursts and avoiding the drawbacks of traditional methods such as complex procedures and easily damaged piping.

[0038] like Figures 1 to 3 As shown, in this embodiment, the first drive component 6 includes a hydraulic cylinder 61, which is fixedly mounted on the tunneling machine body 1, and the piston rod of the hydraulic cylinder 61 is connected to the base 2.

[0039] In use, the hydraulic cylinder 61 is activated to drive the base 2 to slide relative to the tunneling machine body 1, thereby moving the entire anchor cable tensioning device horizontally for large-range coarse adjustment of the horizontal position. The hydraulic cylinder 61 has the characteristics of large output force, smooth movement and high control precision. Using the hydraulic cylinder 61 as the first drive component 6 can provide a sufficiently large driving force to ensure that the base 2 slides smoothly on the tunneling machine body 1 and the movement process is stable, which facilitates precise control of the position of the base 2 and meets the needs of adjusting the horizontal position of the anchor cable tensioning device under different working conditions.

[0040] like Figures 1 to 3 As shown, in this embodiment, the second drive assembly 7 includes a scissor lift 71, which is fixedly mounted on the upper end of the base 2, and the top plate 3 is fixedly mounted on the upper end of the scissor lift 71.

[0041] When in use, the scissor lift 71 is turned on. Through the hydraulic system inside the scissor lift 71, the scissor arms extend and retract, driving the top plate 3 to move vertically up and down relative to the base 2, thereby adjusting the working height of the device. The scissor structure is very stable during the lifting process, and provides good structural rigidity and stability at the high position, effectively resisting the reaction force generated during tensioning and preventing shaking. Moreover, when retracted, the scissor lift 71 is low in height and compact in structure, which helps to reduce the storage space of the entire device.

[0042] like Figure 4 As shown, in this embodiment, a rotating shaft 41 is fixedly installed at the lower end of the rotating plate 4. The rotating shaft 41 is rotatably installed at the upper end of the top plate 3 through a bearing. The rotating plate 4 achieves rotational movement at the upper end of the top plate 3 through the rotating shaft 41, so that the operator can easily adjust the horizontal position of the tensioning jack 5 to align with the anchor cables in different directions.

[0043] like Figures 2 to 4 As shown, in this embodiment, a groove 42 is provided on the top of the rotating plate 4, and a slider 43 is slidably disposed within the groove 42. The tensioning jack 5 is detachably disposed on the slider 43. The tensioning jack 5 achieves translational movement on the top of the rotating plate 4 through the cooperation of the slider 43 and the groove 42, thereby allowing precise fine-tuning of the position of the tensioning jack 5 to ensure that the center hole of the tensioning jack 5 is perfectly aligned with the tail end of the anchor cable, thus ensuring the tensioning quality. The detachable design facilitates the installation, disassembly, maintenance, and replacement of the tensioning jack 5, improving the flexibility and maintainability of the device.

[0044] like Figures 1 to 3 As shown, in this embodiment, a guide rod 11 is fixedly installed on the tunneling machine body 1, and a guide block 21 is fixedly installed on the base 2. The guide block 21 is slidably sleeved on the guide rod 11. The cooperation between the guide block 21 and the guide rod 11 provides guidance for the sliding of the base 2, ensuring that the base 2 always moves along the predetermined direction during the sliding process without deviation or shaking, which can effectively improve the stability and accuracy of the sliding of the base 2.

[0045] like Figure 4 As shown, in this embodiment, a support pulley 44 is fixedly provided at the lower end of the rotating plate 4, and the support pulley 44 is slidably provided at the upper end of the top plate 3. When the rotating plate 4 rotates, the support pulley 44 rolls on the surface of the top plate 3 along with the rotating plate 4, providing additional support for the rotating plate 4, sharing part of the load borne by the rotating shaft 41, and reducing the friction between the rotating plate 4 and the top plate 3, making the rotation of the rotating plate 4 easier and smoother.

[0046] like Figures 1 to 3 As shown in this embodiment, a handle 45 is fixedly provided on the rotating plate 4; the handle 45 makes it easy for the operator to apply force to rotate the rotating plate 4, thus improving the ease of use.

[0047] Working principle: When using the tunneling machine-mounted anchor cable tensioning device provided in this application, firstly, the hydraulic cylinder 61 is activated to drive the base 2 to slide relative to the tunneling machine body 1, thereby moving the entire anchor cable tensioning device horizontally for a large range of coarse horizontal position adjustment, aligning the device with the anchor cable to be tensioned. Then, the scissor lift 71 is activated to drive the top plate 3 to move vertically up and down relative to the base 2, thereby adjusting the working height of the device to match the height of the anchor cable tail. Then, the rotating plate 4 is rotated, and the tensioning jack 5 is slid to change the position of the tensioning jack 5 on the rotating plate 4 for fine adjustment, so that the center hole of the tensioning jack 5 is precisely aligned with the anchor cable. After alignment, the scissor lift 71 is activated to raise the tensioning jack 5, and then the tensioning jack 5 is started to perform the anchor cable tensioning operation.

[0048] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A machine-mounted anchor cable tensioning device for a tunneling machine, characterized in that: The machine includes a base (2) slidably mounted on the tunneling machine body (1), a top plate (3) mounted on the base (2), a rotating plate (4) rotatably mounted on the top plate (3), and a tensioning jack (5) slidably mounted on the rotating plate (4). The tunneling machine body (1) is provided with a first drive assembly (6) for driving the base (2) to slide. A second drive assembly (7) for driving the top plate (3) to move up and down is provided between the base (2) and the top plate (3). The tensioning jack (5) is connected to the oil pump of the tunneling machine body (1) through an oil circuit.

2. The tunneling machine-mounted anchor cable tensioning device according to claim 1, characterized in that: The first drive assembly (6) includes a hydraulic cylinder (61), which is fixedly mounted on the tunneling machine body (1), and the piston rod of the hydraulic cylinder (61) is connected to the base (2).

3. The tunneling machine-mounted anchor cable tensioning device according to claim 1, characterized in that: The second drive assembly (7) includes a scissor lift (71), which is fixedly mounted on the upper end of the base (2), and the top plate (3) is fixedly mounted on the upper end of the scissor lift (71).

4. The tunneling machine-mounted anchor cable tensioning device according to claim 1, characterized in that: A rotating shaft (41) is fixedly installed at the lower end of the rotating plate (4), and the rotating shaft (41) is rotatably installed at the upper end of the top plate (3) through a bearing.

5. The tunneling machine-mounted anchor cable tensioning device according to claim 1, characterized in that: The top of the rotating plate (4) is provided with a sliding groove (42), and a slider (43) is provided in the sliding groove (42) for limiting sliding. The tensioning jack (5) is detachably mounted on the slider (43).

6. The tunneling machine-mounted anchor cable tensioning device according to claim 1, characterized in that: A guide rod (11) is fixedly installed on the tunneling machine body (1), and a guide block (21) is fixedly installed on the base (2). The guide block (21) is slidably sleeved on the guide rod (11).

7. The tunneling machine-mounted anchor cable tensioning device according to claim 1, characterized in that: The lower end of the rotating plate (4) is fixedly provided with a support pulley (44), which is slidably disposed on the upper end of the top plate (3).

8. The tunneling machine-mounted anchor cable tensioning device according to claim 1, characterized in that: A handle (45) is fixedly installed on the rotating plate (4).

Images