Mining anchor cable tensioning machine tool capable of achieving rapid clamping

Abstract

The utility model relates to the technical field of anchor cable tensioning equipment, and particularly discloses a mining anchor cable tensioning machine tool capable of quickly clamping, which comprises a tensioning jack and a jacking device fixed at the front end of the tensioning jack. A supporting seat is arranged in the tensioning jack, the diameter of an inner cavity of the supporting seat is gradually increased from front to back, a tool anchor is arranged in the cavity, a spring seat and a first reset spring are arranged on the rear portion of the tool anchor, the diameter of an inner cavity in the middle of the spring seat is gradually decreased from front to back, a multi-petal type clamping device with a conical outer surface is arranged in the inner cavity in a sliding mode, and the rear end of the multi-petal type clamping device is connected through a blocking net. The tensioning jack is composed of an outer shell, a middle cylinder body and an inner cylinder body, an anchor jacking pipe is arranged in the middle of an inner cavity of the jacking device, an anchor releasing ring and a second reset spring are arranged at the rear end of the inner cavity of the jacking device, and the cylinder bodies are connected through threads and are provided with oil seals for sealing. The machine tool realizes quick clamping and releasing of the anchor cable through hydraulic driving, is reliable in clamping and convenient to operate, is convenient to maintain due to threaded connection of all parts, and is suitable for anchor cable tensioning operation of projects such as coal mine tunnel support.

Description

TECHNICAL FIELD

[0001] The utility model relates to article transportation protection technical field, concretely is a kind of quick clamping's mine anchor cable tensioning machine. BACKGROUND

[0002] Pneumatic anchor cable tensioning machine is the key equipment of coal mine roadway anchor cable prestress installation, mainly by tensioning jack, pneumatic hydraulic pump and high-pressure rubber tube are formed.The machine is realized automatic anchoring and de-anchoring function by built-in tool anchor, significantly improve operation safety and efficiency.Product uses explosion-proof design, with compact structure, easy to operate characteristics, specially for coal mine underground high-risk environment development.

[0003] Chinese patent CN213418521U discloses an anchor cable tensioning machine, which comprises an outer cylinder, a middle cylinder, an inner cylinder and a top pressure device, the middle cylinder is arranged in the outer cylinder, and the end of the middle cylinder protrudes out of the outer cylinder, the inner cylinder is arranged in the middle cylinder, the top pressure device is fixedly arranged at the end of the middle cylinder, the top pressure device is internally provided with a top anchor pipe, a plurality of disc springs and a de-anchoring ring, the top anchor pipe is fixedly connected with the top pressure device, and the de-anchoring ring is movably arranged in the top pressure device.The utility model passes through the front oil inlet and enters hydraulic oil, the hydraulic oil pushes the piston to move forward, and the piston drives the middle cylinder to move forward, but the front end of the middle cylinder is pushed against the support point and cannot move, under the action of force, the outer cylinder and the inner cylinder move in the opposite direction, in the movement process, there is frictional resistance between the thread teeth on the inner surface of the tool anchor and the anchor cable, and under the action of the anchor, the anchor cable is locked by being shrunk to the center, continuous oil supply can pull the anchor cable to move, and the purpose of outward tension is achieved.

[0004] In the above technical solution, the anchor cable is only fastened when the hydraulic oil cylinder moves during insertion, which may cause loosening during the debugging stage in actual use, thereby the anchor cable needs to be reconnected, affecting the work efficiency. UTILITY MODEL CONTENTS

[0005] To solve the above problems, the utility model adopts the following technical scheme.

[0006] A kind of quick clamping's mine anchor cable tensioning machine, including tensioning jack and top pressure device, the top pressure device is fixedly connected at the front end of tensioning jack, the inside of tensioning jack is fixedly provided with support seat, the inside of support seat is provided with a conical cavity, the diameter of conical cavity gradually increases from front to back, the inside of conical cavity is provided with tool anchor, spring seat is provided in the rear part of tool anchor, reset spring one is arranged between spring seat and inner cylinder body of tensioning jack, the middle part of spring seat is provided with conical inner cavity, the diameter of conical inner cavity gradually reduces from front to back, clamping device is arranged in conical inner cavity, the outer surface of clamping device is conical surface matched with conical inner cavity, clamping device is multi-petal structure and is slidably arranged on the inner wall of conical inner cavity, and the rear end of clamping is connected by blocking net.

[0007] As preferred, the tensioning jack comprises an outer shell, a middle cylinder and an inner cylinder, the middle cylinder is arranged inside the outer shell with the end protruding out of the outer shell, the inner cylinder is arranged inside the middle cylinder, and the pressure head is fixedly arranged at the front end of the middle cylinder.

[0008] As preferred, a top anchor pipe is further fixedly arranged in the middle of the inner cavity of the pressure head, the rear end of the top anchor pipe is provided with an unanchoring ring, and a second reset spring is arranged between the top anchor pipe and the unanchoring ring.

[0009] As preferred, the middle cylinder is threadedly connected with the outer shell, the rear end of the outer shell is provided with a cover body, a piston is slidingly arranged on the inner cylinder, a rear stop ring is further arranged between the piston and the cover body, and the rear stop ring is clamped on the inner wall of the outer shell.

[0010] As preferred, the front end of the outer shell is provided with a front oil inlet, the rear end of the outer shell is provided with a rear oil outlet, an oil pipe is connected at the front oil inlet, the other end of the oil pipe is provided with an oil pipe connector one, a connecting seat is connected at the rear oil outlet, an oil channel is arranged in the connecting seat and communicates with the rear oil outlet, an oil pipe connector two and a jack are arranged on the connecting seat, and the oil pipe passes through the jack.

[0011] As preferred, the oil outlet end of the front oil inlet is arranged between the piston and the rear stop ring.

[0012] As preferred, an oil seal one is arranged between the piston, the outer shell and the inner cylinder.

[0013] As preferred, an oil seal two is arranged between the rear stop ring, the outer shell and the inner cylinder.

[0014] As preferred, an oil seal three is arranged between the inner cylinder and the middle cylinder.

[0015] As preferred, an oil seal four is arranged between the outer shell and the middle cylinder.

[0016] Compared with the prior art, the utility model has the beneficial effects that:

[0017] The utility model discloses a tensioning jack, which comprises an outer shell, a middle cylinder and an inner cylinder. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the overall structure of the utility model sectional view;

[0019] Figure 2 It is Figure 1 It is the local structure schematic view of A place in the middle.

[0020] 1. Tensioning jack; 2. Top pressure device; 3. Oil pipe; 4. Connecting seat; 51. Oil seal one; 52. Oil seal two; 53. Oil seal three; 54. Oil seal four; 101. Outer shell; 102. Middle cylinder body; 103. Cover body; 1011. Inlet oil port; 1012. Rear oil outlet; 11. Support seat; 12. Tool anchor; 13. Spring seat; 131. Return spring one; 14. Inner cylinder body; 15. Clamping device; 151. Barrier net; 16. Piston; 17. Rear retaining ring; 21. Top anchor pipe; 22. Anchor release ring; 23. Return spring two. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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 of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example

[0024] like Figures 1-2 As shown, a quick-clamping mining anchor cable tensioning device includes a tensioning jack 1 and a jacking device 2. In this embodiment, the tensioning jack 1 includes an outer shell 101, a middle cylinder 102, and an inner cylinder 14. The middle cylinder 102 is disposed inside the outer shell 101 and protrudes from the front end. The inner cylinder 14 is nested inside the middle cylinder 102, and the jacking device 2 is fixed to the front end of the middle cylinder 102.

[0025] In the embodiment, the tensioning jack 1 is internally fixed with a support seat 11, which is internally provided with a cavity with a gradually increasing diameter from front to back, and the tool anchor 12 is installed in the cavity. The rear part of the tool anchor 12 is provided with a spring seat 13, and the spring seat 13 is provided with a reset spring 131 between the spring seat 13 and the inner cylinder 14. The middle part of the spring seat 13 is penetrated by an inner cavity with a gradually decreasing diameter from front to back, and the inner cavity is slidably provided with a gripper 15. The outer surface of the gripper 15 is a tapered surface matched with the inner cavity, and the rear end of the multi-petal structure of the gripper 15 is connected through a blocking net 151.

[0026] In the embodiment, the inner cavity of the top pressure device 2 is fixed with a top anchor pipe 21 in the middle part, and the rear end is provided with an unanchoring ring 22. The top anchor pipe 21 is provided with a reset spring 23 between the top anchor pipe 21 and the unanchoring ring 22.

[0027] In the embodiment, the middle cylinder 102 is threadedly connected with the outer shell 101, the rear end part of the outer shell 101 is provided with a cover 103, the inner cylinder 14 is slidably provided with a piston 16, the piston 16 is provided with a rear blocking ring 17 between the piston 16 and the cover 103, and the rear blocking ring 17 is clamped on the inner wall of the outer shell 101.

[0028] In the embodiment, the front part of the outer shell 101 is provided with a front oil inlet 1011, and the rear end is provided with a rear oil outlet 1012. The front oil inlet 1011 is connected with an oil pipe connector 31 through an oil pipe 3, the rear oil outlet 1012 is connected with an oil pipe connector 42 through a connecting seat 4, and the oil pipe 3 penetrates the insertion hole 43 of the connecting seat 4. The oil outlet end of the front oil inlet 1011 is located between the piston 16 and the rear blocking ring 17.

[0029] In the embodiment, the piston 16 is provided with an oil seal 51 between the piston 16, the outer shell 101 and the inner cylinder 14; the rear blocking ring 17 is provided with an oil seal 52 between the rear blocking ring 17, the outer shell 101 and the inner cylinder 14; the inner cylinder 14 is provided with an oil seal 53 between the inner cylinder 14 and the middle cylinder 102; and the outer shell 101 is provided with an oil seal 54 between the outer shell 101 and the middle cylinder 102.

[0030] The working principle of the above technical solution is as follows:

[0031] First, the anchor cable is inserted from the front end of the top pressure device 2, and then sequentially passes through the top anchor pipe 21, the tool anchor 12 and the gripper 15. When the anchor cable is inserted, the contact with the blocking net 151 drives the gripper 15 to move backward, and under the extrusion action of the spring seat inner cavity, the gripper 15 gradually shrinks to clamp the anchor cable, thereby completing the rapid clamping and avoiding slipping before the tensioning jack works.

[0032] When the anchor cable is clamped, the hydraulic station supplies oil to the front oil inlet 1011 through the oil pipe connector 31, the hydraulic oil drives the piston 16 to move forward, the middle cylinder 102 moves forward to tightly press the support surface, the inner cylinder 14 moves backward, the reset spring 131 drives the spring seat 13 to move forward, the gripper 15 shrinks in the tapered inner cavity of the spring seat 13, and the anchor cable is clamped.

[0033] During tensioning operation, the inner cylinder 14 moves backward continuously, and the tensioning force is applied to the anchor cable through the tool anchor 12 and the gripper 15 until the design load is reached.

[0034] During release operation, the hydraulic station supplies oil to the rear oil outlet 1012 through the oil pipe joint II 42, the piston 16 moves backward, and the inner cylinder 14 retracts. The anchor ring 22 moves forward under the action of the return spring II 23, the tool anchor 12 moves backward, the gripper 15 expands to release the anchor cable, the working anchor is pushed out by the anchor pipe 21, and the tool and the anchor cable are separated.

[0035] The above is only a preferred specific embodiment of the present application; however, the protection scope of the present application is not limited to this. Any person skilled in the art, according to the technical scheme and the improvement concept of the present application, should be covered in the protection scope of the present application within the technical range disclosed by the present application.

Claims

1. A quick clamping mine anchor cable tensioning device, characterized in that, Including tensioning jack (1) and top pressure ware (2), top pressure ware (2) fixedly connected to tensioning jack (1) front end, tensioning jack (1) inside fixedly provided with support seat (11), the inside of support seat (11) is provided with the cavity that diameter gradually increases from front to back, the inside of the cavity is provided with tool anchor (12), tool anchor (12) rear is provided with spring seat (13), and reset spring one (131) is arranged between spring seat (13) and the inner cylinder (14) of tensioning jack (1), the middle part of spring seat (13) is provided with the inner cavity of gradually reducing diameter from front to back, the inner cavity is provided with holder (15), the outer surface of holder (15) is the taper surface matched with the inner cavity, holder (15) is the multi-petal structure and is slidably arranged in the inner wall of the inner cavity, the rear end of holder (15) is connected through the blocking net (151).

2. A quick clamping mine anchor cable tensioning device according to claim 1, characterized in that: The tensioning jack (1) comprises an outer shell (101), a middle cylinder (102) and an inner cylinder (14), the middle cylinder (102) is arranged in the outer shell (101), and the end portion of the middle cylinder (102) protrudes out of the outer shell (101), the inner cylinder (14) is arranged in the middle cylinder (102), and the top pressure ware (2) is fixedly arranged at the front end of the middle cylinder (102).

3. The quick clamping mine anchor cable tensioning device according to claim 1, characterized in that: A top anchor pipe (21) is also fixedly arranged in the middle part of the inner cavity of the top pressure ware (2), the rear end of the top anchor pipe (21) is provided with an anchor releasing ring (22), and a reset spring (23) is arranged between the top anchor pipe (21) and the anchor releasing ring (22).

4. The quick clamping mine anchor cable tensioning device according to claim 2, characterized in that: The middle cylinder (102) is threadedly connected with the outer shell (101), the rear end of the outer shell (101) is provided with a cover body (103), the inner cylinder (14) is slidably provided with a piston (16), and a rear blocking ring (17) is further arranged between the piston (16) and the cover body (103), and the rear blocking ring (17) is clamped on the inner wall of the outer shell (101).

5. A quick clamping mine anchor cable tensioning device according to claim 4, characterized in that: The front end of the outer shell (101) is provided with a front oil inlet (1011), the rear end of the outer shell (101) is provided with a rear oil outlet (1012), the oil pipe (3) is connected at the front oil inlet (1011), the other end of the oil pipe (3) is provided with an oil pipe connector (31), the connecting seat (4) is connected at the rear oil outlet (1012), the connecting seat (4) is provided with an oil channel (41) in communication with the rear oil outlet (1012), the connecting seat (4) is provided with an oil pipe connector (42) and a jack (43), and the oil pipe (3) passes through the jack (43).

6. A quick clamping mine anchor cable tensioning device according to claim 5, characterized in that: The oil outlet end of the front oil inlet (1011) is arranged between the piston (16) and the rear blocking ring (17).

7. A quick clamping mine anchor cable tensioning device according to claim 6, characterized in that: The piston (16), the outer shell (101) and the inner cylinder (14) are provided with an oil seal (51).

8. A quick clamping mine anchor cable tensioning device according to claim 6, characterized in that: The rear blocking ring (17), the outer shell (101) and the inner cylinder (14) are provided with an oil seal (52).

9. A quick clamping mine anchor cable tensioning device according to claim 6, characterized in that: The inner cylinder (14) and the middle cylinder (102) are provided with an oil seal (53).

10. The quick clamping mine anchor cable tensioning device of claim 6, wherein: The outer shell (101) and the middle cylinder (102) are provided with an oil seal (54).

Images