Vertical shaft cable laying device and method

Abstract

The invention discloses a vertical shaft cable laying device and method, and solves the technical problems that the labor cost and the time cost are increased and large potential safety hazards exist due to the fact that the cable laying speed is low and multiple persons need to cooperate in the prior art. Wherein the vertical shaft laying device comprises a guide device, a pay-off rack and a buffer device; the guide device is arranged at the mouth of the vertical shaft; the pay-off rack and the buffer device are both arranged on the plane corresponding to the mouth of the vertical shaft, and the buffer device is located between the pay-off rack and the guide device. The buffering device and the guiding device in the vertical shaft cable laying device can be matched to convey the cable into the vertical shaft, the cable is tensioned through the buffering device, the lowering speed is controlled, laying of the cable is easily completed, the number of workers needed in the whole laying process is reduced, and the laying efficiency is improved. And the condition that the cable is released from the pay-off rack due to too high cable releasing speed is avoided, so that the laying period of the cable is ensured, and the labor cost, the time cost and the potential safety hazard during construction are reduced.

Description

Technical Field

[0001] The present application belongs to the technical field of cable laying, and specifically relates to a vertical shaft cable laying device and method. Background Art

[0002] Cable laying in underground mine shafts is an important project in mine construction and installation. Generally, power cables, control cables, communication optical cables, telephone cables, etc. are laid in the shafts of the shafts.

[0003] In the prior art, the laying of the above-mentioned various cables is to directly place the cable reel on the pay-off rack, and release the cable by rotating the cable reel so that the head end of the cable can be transported from the wellhead of the shaft to the bottom of the shaft to complete the laying of the cable.

[0004] When laying cables, multiple workers are required to assist in the work, observe the cable lowering status, and control the cable lowering speed. There are two ways to control the cable lowering speed:

[0005] 1) Multiple workers pull the cable at the wellhead to control the lowering speed of the cable;

[0006] 2) Use a homemade lever brake to control the rotation speed of the cable drum; specifically, the braking end of the lever brake extends under the cable drum, and the staff steps on the pedal end of the lever brake to make the braking end of the lever brake tilt upward and close to the circumferential side wall of the cable drum to slow down the rotation speed of the cable drum, thereby controlling the lowering speed of the cable.

[0007] Both of the above methods can reduce the probability of cable laying being detached from the cable drum and sliding to the bottom of the shaft due to the cable being lowered too fast, thus causing the cable to be re-laid; however, the above two methods have a slow laying speed and require the cooperation of multiple people, resulting in increased labor costs and time costs; at the same time, when the lowered cable is too long (heavy), the staff cannot control the speed of the cable lowering (when the staff's strength is less than the weight of the cable), causing all the cables to slide into the shaft, resulting in cable laying rework, which extends the cable laying period and poses a greater safety hazard. Therefore, inventing a shaft cable laying device that can reduce labor costs and ensure the construction period is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0008] In order to solve the above technical problems, the present application provides a vertical shaft cable laying device to solve the technical problems in the prior art that the cable laying speed is slow and requires the cooperation of multiple people, resulting in increased labor costs and time costs, and there are major safety hazards.

[0009] The technical solution adopted to achieve the purpose of this application is:

[0010] A vertical shaft cable laying device, comprising a guide device, a pay-off frame and a buffer device;

[0011] The guide device is arranged at the wellhead of the vertical shaft;

[0012] The pay-off rack and the buffer device are both arranged on a plane corresponding to the shaft opening, and the buffer device is located between the pay-off rack and the guide device; the cables on the pay-off rack bypass the buffer device and extend from the guide device to the shaft, and the buffer device can transport the cables to the shaft and prevent the cables from sliding to the bottom of the shaft.

[0013] In order to better realize the present application, further optimization is made in the above structure, wherein the pay-off frame includes a support frame and a release motor;

[0014] The support frame is provided with a pay-off shaft for installing the cable reel;

[0015] The power output end of the release motor is transmission-connected to the pay-off shaft.

[0016] In order to better realize the present application, further optimization is made in the above structure, and the buffer device is a winch.

[0017] In order to better realize the present application, further optimization is made in the above structure, and the surface of the roller of the buffer device is coated with an anti-slip layer.

[0018] In order to better realize the present application, further optimization is made in the above structure, and an automatic brake mechanism is provided on the buffer device, and the action end of the automatic brake mechanism is covered on the roller.

[0019] In order to better realize the present application, further optimization is made in the above structure, wherein the guide device includes a guide frame and a guide wheel;

[0020] The guide frame is installed at the wellhead of the vertical shaft;

[0021] The guide wheel is rotatably arranged on the guide frame.

[0022] On the other hand, the present application provides a method for laying cables in a vertical shaft, the method being implemented by the above-mentioned vertical shaft cable laying device; the method comprising the following steps:

[0023] Installing the cable drum on the pay-off shaft of the pay-off rack;

[0024] Leading out the cable from the cable drum and winding it multiple times on the reel of the buffer device;

[0025] Lead the cable out from the reel of the buffer device and send it into the shaft through the guide device;

[0026] The buffer device is started, and the cable is conveyed into the shaft by the buffer device. The cable laying speed is controlled by the buffer device and the cable is prevented from falling off the cable drum to the bottom of the shaft.

[0027] In order to better implement the present application, further optimization is made in the above method. After starting the buffer device, the pay-off stand is started, and the conveying speed of the pay-off stand matches the conveying speed of the buffer device.

[0028] It can be seen from the above technical scheme that the buffer device and the guide device in the vertical shaft cable laying device provided by the present application can cooperate to transport the cable into the vertical shaft, tighten the cable through the buffer device, and control the cable lowering speed, so as to easily complete the cable laying, reduce the number of staff required for the entire laying process, and avoid the cable being lowered too fast and falling off the wire rack, causing the cable to fall to the bottom of the vertical shaft and causing the cable laying to be reworked, so as to ensure the cable laying period, thereby reducing labor costs, time costs and safety hazards during construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic structural diagram of a vertical shaft cable laying device in use according to the present application.

[0030] Figure 2 This is a top view of a vertical shaft cable laying device of the present application when in use.

[0031] Explanation of the reference numerals: 1-guide device, 11-guide frame, 12-guide wheel; 2-pay-off frame, 21-support frame, 22-release motor; 3-buffer device, 31-winding roller, 32-automatic brake mechanism. DETAILED DESCRIPTION

[0032] In order to enable technicians in the technical field to which the present application belongs to understand the present application more clearly, the technical solution of the present application is described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0033] In the embodiments of the present application, Figure 1 and Figure 2 As shown, the vertical shaft cable laying device includes a guide device 1, a pay-off frame 2 and a buffer device 3; wherein,

[0034] The guide device 1 is arranged at the wellhead of the shaft;

[0035] The pay-off frame 2 and the buffer device 3 are both arranged on the plane corresponding to the shaft opening, and the buffer device 3 is located between the pay-off frame 2 and the guide device 1; the cable on the pay-off frame 2 passes by the buffer device 3 and then extends from the guide device 1 to the shaft, and the buffer device 3 can transport the cable to the shaft and prevent the cable from sliding all the way to the bottom of the shaft. Preferably, the buffer device 3 is a winch.

[0036] When laying cables, the staff can place the cable drum with the cable wound around it on the pay-off frame 2, so that the cable drum can rotate freely around its axis on the pay-off frame 2;

[0037] Then, the staff leads out the head end of the cable on the cable drum, passes it around the buffer device 3, and then pulls it to the guide device 1, and lowers it into the shaft through the guide device 1;

[0038] Then, the staff can start the buffer device 3, pull the cable on the cable drum out through the buffer device 3, and transport it in the direction of the shaft, so that the cable can be lowered into the shaft. The lowering speed of the cable is the same as the rotation speed of the buffer device 3, so that the cable can be laid smoothly and quickly.

[0039] Both ends of the cable wound on the buffer device 3 are subjected to a certain pulling force (the end close to the shaft is tightened by gravity, and the end close to the cable drum is tightened by the reaction force of pulling the cable drum), so that the cable wound on the buffer device 3 can fit tightly on the buffer device 3, so that a certain friction force will be generated between the cable wound on the buffer device 3 and the buffer device 3, which can pull the cable lowered into the shaft, and avoid the situation that when the cable lowered into the shaft is too long (heavy), the cable gets out of control and slides into the shaft completely, thereby ensuring the cable laying period.

[0040] In addition, during the cable lowering process, the staff only needs to operate the opening / closing of the buffer device 3 and observe the lowering status of the cable. There is no need for the staff to pull the cable or step on the lever brake to control the cable lowering speed, thereby reducing the safety hazards during the cable laying process.

[0041] It should be noted that the buffer device 3 in this embodiment replaces the function of the staff who pulls the cable at the wellhead or the brake at the pay-off frame 2, thereby reducing the number of staff required for cable laying and reducing safety hazards; when the cable is wrapped around the buffer device 3, it is wrapped around the action end of the buffer device 3 for at least three turns to avoid the cable from sliding out of the buffer device 3 quickly due to insufficient friction, thereby causing the cable to fall to the bottom of the shaft.

[0042] In some embodiments, the above-mentioned pay-off frame 2 includes a support frame 21 and a release motor 22; wherein,

[0043] Two pay-off shafts are rotatably arranged on the support frame 21. The two pay-off shafts are arranged opposite to each other, and the axes of the two pay-off shafts coincide with each other, so that the cable drum can be set between the two pay-off shafts and can rotate on the support frame 21 together with the pay-off shafts to release the cable;

[0044] The power output end of the release motor 22 is drivingly connected to one of the pay-off shafts for controlling the rotation speed of the pay-off shaft, that is, controlling the release speed of the cable through the release motor 22 .

[0045] It should be noted that the rotation speed of the release motor 22 matches the rotation speed of the buffer device 3 to ensure the tension of the cable between the pay-off frame 2 and the buffer device 3, and to avoid the cable release speed at the pay-off frame 2 being too fast (the rotation speed of the release motor 22 is greater than the rotation speed of the buffer device 3) so as to prevent the cable near one end of the pay-off frame 2 from loosening, resulting in a reduction in the friction between the cable on the buffer device 3 and the buffer device 3, so that the buffer device 3 cannot play the role of pulling the cable closer;

[0046] Alternatively, the cable release speed at the pay-off frame 2 is too slow (the rotation speed of the release motor 22 is lower than the rotation speed of the buffer device 3), resulting in the cable being damaged by excessive tension. In this embodiment, the rotation speeds of the release motor 22 and the buffer device 3 are both 4 m / min.

[0047] In some embodiments, the surface of the roller 31 of the buffer device 3 is coated with an anti-skid layer, which can effectively increase the friction between the cable and the surface of the roller 31 to further prevent the cable from slipping out of the buffer device 3.

[0048] In some embodiments, the buffer device 3 is provided with an automatic brake mechanism 32, and the action end of the automatic brake mechanism 32 is wrapped on the roller 31;

[0049] If the rotation speed of the roller 31 in the buffer device 3 exceeds the set rotation speed, that is, when the buffer device 3 is in a slipping state, the action end of the automatic brake mechanism 32 can hold the roller 31 tightly to prevent the cable from sliding to the bottom of the shaft due to a failure of the buffer device 3.

[0050] In some embodiments, the guide device 1 includes a guide frame 11 and a guide wheel 12; wherein,

[0051] The guide frame 11 is installed at the wellhead of the shaft;

[0052] The guide wheel 12 is rotatably arranged on the guide frame 11. The head end of the cable is wound around the buffer device 3 and then around the guide wheel 12. It is transported into the shaft through the guide wheel 12 so that the cable will not be scraped against the shaft mouth to avoid damage to the cable due to scraping.

[0053] Through the above embodiments, the present application has the following beneficial effects or advantages:

[0054] 1) The buffer device 3 and the guide device 1 in the shaft cable laying device can cooperate to transport the cable into the shaft, tighten the cable through the buffer device 3, and control the release speed of the cable to prevent the cable from sliding down quickly and falling off the pay-off frame 2, causing the cable to fall to the bottom of the shaft and causing rework of the cable laying, so as to ensure the cable laying period. At the same time, in the process of releasing the cable, there is no need to control the speed of the cable by manually pulling the cable or stepping on the lever brake, thereby reducing the safety hazards of cable laying.

[0055] 2) The automatic brake mechanism 32 provided on the buffer device 3 can play an emergency braking role when the buffer device 3 fails suddenly, so as to avoid the sudden failure of the buffer device 3 causing the cable to slide quickly to the bottom of the shaft, thereby ensuring the construction period of the cable.

[0056] 3) The pay-off frame 2 includes a release motor 22 capable of controlling the rotation speed of the cable drum. The release speed of the cable is controlled by the release motor 22 to ensure the tension of the cable between the pay-off frame 2 and the buffer device 3, thereby preventing the cable at the inlet end of the buffer device 3 from being too loose and coming loose from the buffer device 3.

[0057] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0058] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A vertical shaft cable laying device, characterized in that: It comprises a guide device (1), a pay-off frame (2) and a buffer device (3); The guide device (1) is arranged at the wellhead of the vertical shaft; The pay-off frame (2) and the buffer device (3) are both arranged on a plane corresponding to the shaft opening, and the buffer device (3) is located between the pay-off frame (2) and the guide device (1); the cable on the pay-off frame (2) passes around the buffer device (3) and then extends from the guide device (1) into the shaft, and the buffer device (3) can transport the cable to the shaft and prevent the cable from sliding to the bottom of the shaft.

2. The vertical shaft cable laying device according to claim 1, characterized in that: The pay-off frame (2) comprises a support frame (21) and a release motor (22); The support frame (21) is provided with a pay-off shaft for installing a cable drum; The power output end of the release motor (22) is transmission-connected to the pay-off shaft.

3. The vertical shaft cable laying device according to claim 1, characterized in that: The buffer device (3) is a winch.

4. The vertical shaft cable laying device according to claim 3, characterized in that: The surface of the roller (31) of the buffer device (3) is coated with an anti-slip layer.

5. The vertical shaft cable laying device according to claim 4, characterized in that: The buffer device (3) is provided with an automatic brake mechanism (32), and the action end of the automatic brake mechanism (32) is wrapped around the roller (31).

6. The vertical shaft cable laying device according to any one of claims 1 to 5, characterized in that: The guide device (1) comprises a guide frame (11) and a guide wheel (12); The guide frame (11) is installed at the wellhead of the vertical shaft; The guide wheel (12) is rotatably arranged on the guide frame (11).

7. A method for laying cables in a vertical shaft, characterized in that: The method is implemented by the vertical shaft cable laying device according to any one of claims 1 to 6; the method comprises the following steps; Installing the cable drum on the pay-off shaft of the pay-off frame (2); Leading out the cable from the cable drum and winding it multiple times on a winding roller (31) of a buffer device (3); Leading the cable out from the reel (31) of the buffer device (3) and sending it into the shaft after passing through the guide device (1); The buffer device (3) is started, and the cable is conveyed into the shaft by means of the buffer device (3). The cable laying speed is controlled by means of the buffer device (3) and the cable is prevented from detaching from the cable drum and sliding to the bottom of the shaft.

8. The method for laying cables in a vertical shaft according to claim 7, characterized in that: After the buffer device (3) is started, the pay-off frame (2) is started, and the conveying speed of the pay-off frame (2) matches the conveying speed of the buffer device (3).

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