Rod spring structure clamping and loosening switching device of downhole belt changing equipment and working method

Abstract

The rod spring structure clamping and loosening switching device of downhole belt replacement equipment and the working method thereof comprise upper and lower hand cylinder fixing seats, first and second groups of pull rods connected with the upper and lower hand cylinder fixing seats respectively, and each group of pull rods penetrating through first, second and third transition discs; a first chuck is installed on one side of the first transition disc facing the upper hand cylinder fixing seat, and a second chuck is installed on one side of the third transition disc facing the lower hand cylinder fixing seat, and the first and second groups of pull rods are fixed at the first and second chucks; a disc spring is arranged between the first and second transition discs, and a jack is arranged between the second and third transition discs; first and second groups of spacer sleeves are arranged on the pull rods between the upper and lower hand cylinder fixing seats and the first and second chucks; through the mutual cooperation of the rod spring structure, the one-way pressing of the manual hydraulic jack can realize the clamping and loosening working conditions of the downhole belt replacement equipment.

Description

Technical Field

[0001] This invention belongs to the technical field of rapid installation and replacement of belts for coal mine belt conveyors, specifically relating to a spring-loaded clamping and releasing switching device and its working method for underground belt replacement equipment. Background Technology

[0002] In the prior art, a reverse-pull-rod type pressure loading device includes a base, a top plate, a bracket, a compression spring, a cylindrical pin, a connecting rod, a float plate, a pressure cap, stepped screws, and a jack. The piston rod of the jack pushes the top plate, which in turn pulls the connecting rod. The float plate and the hexagonal head screw apply pressure to the pressure cap, which then presses against the disc parts, achieving reverse loading. However, this device, due to its structural design, only achieves the tensioning condition and cannot achieve lifting.

[0003] In the prior art, a pressure grinding device includes an upper grinding disc, a lower grinding disc, a fixed frame, a rotary table, a jack, and a support platform. The lower grinding disc is lifted by the jack, while the upper grinding disc is not subjected to any force-applying device, thereby increasing the grinding pressure between the lower and upper grinding discs. However, this device only utilizes the lifting force of the jack to increase the grinding pressure, thus achieving a lifting condition but not a tensioning condition.

[0004] In existing technologies, due to limitations in the device structure, it is impossible to achieve bidirectional pressurization with jacks, which results in the inability to quickly replace the belts of coal mine belt conveyors. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a spring-loaded clamping and releasing switching device and its working method for underground belt changing equipment, solving the problem that ordinary unidirectional jacks cannot meet the clamping and releasing requirements of the belt changing device during the rapid belt replacement process of coal mine belt conveyors.

[0006] The present invention adopts the following technical solution.

[0007] This invention proposes a rod-spring structure clamping and releasing switching device for downhole belt changing equipment, which is installed on both sides of the tracked belt changing equipment, with two sets of rod-spring structure clamping and releasing switching devices arranged on each side.

[0008] Each set of lever spring structure clamping and releasing switching device includes: upper hand cylinder fixing seat and lower hand cylinder fixing seat; one end of the upper hand cylinder fixing seat is connected to the upper track through a pin, and one end of the lower hand cylinder fixing seat is connected to the lower track through a pin;

[0009] The other end of the upper cylinder mounting base is connected to the second set of tie rods using a set of nuts, and the other end of the lower cylinder mounting base is connected to the first set of tie rods using a set of nuts. Each set of tie rods passes through the first transition plate, the second transition plate, and the third transition plate. A first chuck is installed on the side of the first transition plate facing the upper cylinder mounting base, and a second chuck is installed on the side of the third transition plate facing the lower cylinder mounting base. The first set of tie rods is fixed at the first chuck using a set of nuts, and the second set of tie rods is fixed at the second chuck using a set of nuts. A disc spring is installed between the first and second transition plates, and a jack is installed between the second and third transition plates. A first set of spacers is installed on the second set of tie rods between the other end of the upper cylinder mounting base and the first chuck. A second set of spacers is installed on the first set of tie rods between the other end of the lower cylinder mounting base and the second chuck.

[0010] The other end of the upper cylinder fixing seat is connected to the second set of tie rods through a set of nuts; with the upper cylinder fixing seat as the starting point, the first transition plate, the second transition plate and the third transition plate are sequentially installed on the second set of tie rods;

[0011] The other end of the lower cylinder mounting base is connected to the first set of tie rods via a set of nuts; starting from the lower cylinder mounting base, the first set of tie rods is sequentially equipped with the third transition plate, the second transition plate, and the first transition plate.

[0012] Each set of levers includes 3 levers.

[0013] The other end of the upper cylinder fixing seat and the other end of the lower cylinder fixing seat are both circular bases. Three threaded holes are evenly arranged on each circular base. The three threaded holes on the upper cylinder fixing seat are on the first circumference, and the three threaded holes on the lower cylinder fixing seat are on the second circumference.

[0014] Two sets of holes are arranged on each transition plate; the first set of holes is arranged on the first circumference, and the second set of holes is arranged on the second circumference.

[0015] The threaded hole on the other end of the upper cylinder mounting base is connected to the second set of tie rods through a set of nuts. The second set of tie rods passes through the holes on the first circumference of the first transition plate, the second transition plate and the third transition plate in sequence.

[0016] The threaded hole on the other end of the lower cylinder mounting base is connected to the first set of tie rods through a set of nuts. The first set of tie rods passes through the third transition plate, the second transition plate, and the hole on the second circumference of the first transition plate in sequence.

[0017] The second set of tie rods is fixed at the second transition plate using a set of nuts.

[0018] The first set of tie rods is fixed at the first chuck using a set of nuts, and the second set of tie rods is fixed at the second chuck using a set of nuts.

[0019] This invention also proposes a working method for a rod spring structure clamping and releasing switching device in downhole belt changing equipment, comprising:

[0020] Tighten the nuts on the first chuck and the second chuck;

[0021] The jack lifts the second transition plate, the second transition plate lifts the disc spring, the disc spring lifts the first transition plate, the first transition plate pulls the lower hand cylinder fixing seat inward through the first set of tie rods, and the third transition plate pulls the upper hand cylinder fixing seat inward through the second set of tie rods; the upper hand cylinder fixing seat clamps the upper track through the pin shaft, and the lower hand cylinder fixing seat clamps the lower track through the pin shaft, realizing the clamping condition of the underground track changing equipment;

[0022] Loosen the nuts on the first chuck and the second chuck;

[0023] The jack lifts the second transition plate, the second transition plate lifts the disc spring, the disc spring lifts the first transition plate, the first transition plate pushes the upper hand cylinder fixing seat outward through the first set of spacers, and the third transition plate pushes the lower hand cylinder fixing seat outward through the first set of spacers; the upper hand cylinder fixing seat loosens the upper track through the pin, and the lower hand cylinder fixing seat loosens the lower track through the pin, realizing the loosening condition of the underground track changing equipment.

[0024] The beneficial effects of this invention are that, compared with the prior art, it includes at least the lever-spring structure clamping and releasing switching device for underground belt changing equipment proposed in this invention. Through the mutual cooperation of the lever-spring structure, the clamping and releasing conditions of the underground belt changing equipment can be achieved by unidirectional pressure from a manual hydraulic jack. This solves the problem that ordinary unidirectional jacks cannot meet the clamping and releasing requirements of the belt changing device during the rapid belt replacement process of coal mine belt conveyors. Attached Figure Description

[0025] Figure 1 This invention provides a diagram of the clamping and releasing switching device of the rod spring structure for the downhole track changing equipment and the track assembly.

[0026] Figure 2 This is a structural diagram of the clamping and releasing switching device of the rod spring structure for the downhole belt changing equipment proposed in this invention.

[0027] Figure 3 This is a front view of the clamping and releasing switching device of the rod spring structure for the downhole belt changing equipment proposed in this invention.

[0028] Figure 4 This is a schematic diagram of the working state of the clamping and releasing switching device of the rod spring structure of the downhole belt changing equipment proposed in this invention.

[0029] Figures 1 to 4 The annotations in the attached figures are explained as follows:

[0030] 1-Upper cylinder mounting base; 2-First set of spacers; 3-First transition plate; 4-First set of tie rods; 5-Second transition plate; 6-Jack; 7-Third transition plate; 8-Lower cylinder mounting base; 9-Second set of spacers; 10-First chuck; 11-Second set of tie rods; 12-Disc spring; 13-Second chuck; 14-Nut; 15-Upper track; 16-Lower track; 17-Pin. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this invention. The embodiments described in this application are merely some embodiments of this invention, and not all embodiments. Based on the spirit of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this invention.

[0032] like Figure 1 As shown, the rod spring structure clamping and releasing switching device for the downhole track changing equipment proposed in this invention is installed on both sides of the track-type track changing equipment, with two sets of rod spring structure clamping and releasing switching devices arranged on each side; each set of rod spring structure clamping and releasing switching device includes: an upper hand cylinder fixing seat 1 and a lower hand cylinder fixing seat 8; one end of the upper hand cylinder fixing seat 1 is connected to the upper track 15 through a pin 17, and one end of the lower hand cylinder fixing seat 8 is connected to the lower track 16 through a pin.

[0033] The other end of the upper cylinder mounting base is connected to the second set of tie rods, and the other end of the lower cylinder mounting base is connected to the first set of tie rods; each set of tie rods passes through the first transition plate, the second transition plate, and the third transition plate.

[0034] like Figure 2 and Figure 3 As shown, the other end of the upper cylinder mounting base is connected to the second set of tie rods 11 via a set of nuts 14. Starting from the upper cylinder mounting base, the second set of tie rods 11 is sequentially equipped with a first transition plate 3, a second transition plate 5, and a third transition plate 7. The other end of the lower cylinder mounting base is connected to the first set of tie rods 4 via a set of nuts. Starting from the lower cylinder mounting base, the first set of tie rods 4 is sequentially equipped with a third transition plate 7, a second transition plate 5, and a first transition plate 3. Through the above structure, the three transition plates are connected to each other via tie rods and nuts.

[0035] Specifically, each set of levers includes 3 levers; the other end of the upper cylinder fixing seat and the other end of the lower cylinder fixing seat are both circular bases, and three threaded holes are evenly arranged on each circular base. The three threaded holes on the upper cylinder fixing seat are on the first circumference, and the three threaded holes on the lower cylinder fixing seat are on the second circumference; two sets of holes are arranged on each transition plate; the first set of holes is arranged on the first circumference, and the second set of holes is arranged on the second circumference.

[0036] The threaded hole at the other end of the upper cylinder mounting base is connected to the second set of tie rods via a set of nuts. The second set of tie rods passes sequentially through holes on the first circumference of the first transition plate, the second transition plate, and the third transition plate. The threaded hole at the other end of the lower cylinder mounting base is connected to the first set of tie rods via a set of nuts. The first set of tie rods passes sequentially through holes on the second circumference of the third transition plate, the second transition plate, and the first transition plate. The second set of tie rods is fixed at the second transition plate using a set of nuts.

[0037] Furthermore, the dimensions of each hole are matched with the outer diameter of the tie rod, so that the tie rod and each transition plate are fitted with a clearance, allowing the transition plate to move freely on the tie rod, while the tie rod restricts the rotational freedom of the transition plate.

[0038] Specifically, a first chuck is installed on the side of the first transition plate facing the upper cylinder mounting base. The first chuck has holes on the second circumference. A set of nuts is used to fix the first set of pull rods at the first chuck. A second chuck is installed on the side of the third transition plate facing the lower cylinder mounting base. The second chuck has holes on the first circumference. A set of nuts is used to fix the second set of pull rods at the second chuck.

[0039] The tie rod is fixedly connected to the upper cylinder mounting base, the lower cylinder mounting base, and each transition plate by means of nuts and chucks, so that the working conditions of the device can be switched by simply loosening the nuts without removing them.

[0040] Specifically, all five sets of nuts are standard parts, with each set consisting of three nuts, used to connect and fix the tie rod.

[0041] Specifically, a first set of spacers 2 is installed on the second set of pull rods between the other end of the upper cylinder fixing seat and the first chuck; a second set of spacers 9 is installed on the first set of pull rods between the other end of the lower cylinder fixing seat and the second chuck. The two sets of spacers are used to realize the release condition of the device.

[0042] A disc spring 12 is installed between the first and second transition plates. The disc spring is used to absorb vibrations caused by changes in external pressure. The disc spring in this invention can not only transmit the force of the manual hydraulic jack, but also absorb vibrations caused by pressure changes in the external environment during belt changing, thus playing a safety protection role.

[0043] A jack 6 is installed between the second and third transition plates. When pressure is applied, the jack provides power, and the force on each transition plate drives the pull rod to move, thus achieving the clamping condition of the device.

[0044] Specifically, the jack 6 is a 5-ton manual hydraulic jack.

[0045] The initial state, clamping state, and releasing state of the rod spring structure clamping and releasing switching device for downhole belt changing equipment proposed in this invention are as follows: Figure 4 As shown, the length relationship of the device in the initial state, clamped state, and released state is L2. <L1<L3。

[0046] This invention also proposes a working method for the clamping and releasing switching device of the rod spring structure in downhole belt changing equipment, including:

[0047] Tighten the nuts on the first chuck and the second chuck;

[0048] The jack lifts the second transition plate, the second transition plate lifts the disc spring, the disc spring lifts the first transition plate, the first transition plate pulls the lower hand cylinder fixing seat inward through the first set of tie rods, and the third transition plate pulls the upper hand cylinder fixing seat inward through the second set of tie rods; the upper hand cylinder fixing seat clamps the upper track through the pin shaft, and the lower hand cylinder fixing seat clamps the lower track through the pin shaft, realizing the clamping condition of the underground track changing equipment;

[0049] Loosen the nuts on the first chuck and the second chuck;

[0050] The jack lifts the second transition plate, the second transition plate lifts the disc spring, the disc spring lifts the first transition plate, the first transition plate pushes the upper hand cylinder fixing seat outward through the first set of spacers, and the third transition plate pushes the lower hand cylinder fixing seat outward through the first set of spacers; the upper hand cylinder fixing seat loosens the upper track through the pin, and the lower hand cylinder fixing seat loosens the lower track through the pin, realizing the loosening condition of the underground track changing equipment.

[0051] The lever-spring structure in this invention consists of a pull rod, a transition plate, and a nut. Simply tightening (or loosening) the nut switches the clamping (or releasing) mode of the device, making operation simple. Four lever-spring structure clamping / releasing switching devices are installed on both sides of the belt changing device. During rapid belt replacement, the lever-spring structure clamping / releasing switching devices apply pressure to the belt changing device, compressing the belt so that the old belt can be pulled out. After belt replacement, the lever-spring structure clamping / releasing switching devices lift the belt changing device, releasing the belt.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the protection scope of the claims of the present invention.

Claims

1. A rod-spring structure clamping and releasing switching device for downhole belt changing equipment, installed on both sides of the tracked belt changing equipment, with two sets of rod-spring structure clamping and releasing switching devices arranged on each side; characterized in that, Each set of lever spring structure clamping and releasing switching device includes: upper hand cylinder fixing seat and lower hand cylinder fixing seat; one end of the upper hand cylinder fixing seat is connected to the upper track through a pin, and one end of the lower hand cylinder fixing seat is connected to the lower track through a pin; The other end of the upper cylinder mounting base is connected to the second set of tie rods using a set of nuts. Starting from the upper cylinder mounting base, the second set of tie rods is sequentially equipped with a first transition plate, a second transition plate, and a third transition plate. The other end of the lower cylinder mounting base is connected to the first set of tie rods using a set of nuts. Starting from the lower cylinder mounting base, the first set of tie rods is sequentially equipped with a third transition plate, a second transition plate, and a first transition plate. Each set of tie rods passes through the first transition plate, the second transition plate, and the third transition plate. A first chuck is installed on the side of the first transition plate facing the upper cylinder mounting base, and a second chuck is installed on the side of the third transition plate facing the lower cylinder mounting base. The first set of tie rods is fixed at the first chuck using a set of nuts, and the second set of tie rods is fixed at the second chuck using a set of nuts. A disc spring is installed between the first and second transition plates, and a jack is installed between the second and third transition plates. A first set of spacers is installed on the second set of tie rods between the other end of the upper cylinder mounting base and the first chuck. A second set of spacers is installed on the first set of tie rods between the other end of the lower cylinder mounting base and the second chuck.

2. The rod spring structure clamping and releasing switching device for downhole belt changing equipment according to claim 1, characterized in that, Each set of levers includes 3 levers.

3. The clamping and releasing switching device for the rod spring structure of the downhole belt changing equipment according to claim 1, characterized in that, The other end of the upper cylinder fixing seat and the other end of the lower cylinder fixing seat are both circular bases. Three threaded holes are evenly arranged on each circular base. The three threaded holes on the upper cylinder fixing seat are on the first circumference, and the three threaded holes on the lower cylinder fixing seat are on the second circumference. Two sets of holes are arranged on each transition plate; the first set of holes is arranged on the first circumference, and the second set of holes is arranged on the second circumference.

4. The clamping and releasing switching device for the rod spring structure of the downhole belt changing equipment according to claim 3, characterized in that, The threaded hole on the other end of the upper cylinder mounting base is connected to the second set of tie rods through a set of nuts. The second set of tie rods passes through the holes on the first circumference of the first transition plate, the second transition plate and the third transition plate in sequence. The threaded hole on the other end of the lower cylinder mounting base is connected to the first set of tie rods through a set of nuts. The first set of tie rods passes through the third transition plate, the second transition plate, and the hole on the second circumference of the first transition plate in sequence.

5. The clamping and releasing switching device for the rod spring structure of the downhole belt changing equipment according to claim 1, characterized in that, The second set of tie rods is fixed at the second transition plate using a set of nuts.

6. The installation of the clamping and releasing switching device for the rod spring structure of the downhole belt changing equipment according to claim 1, characterized in that, The first set of tie rods is fixed at the first chuck using a set of nuts, and the second set of tie rods is fixed at the second chuck using a set of nuts.

7. The working method of the clamping and releasing switching device of the rod spring structure for downhole belt changing equipment, characterized in that, include: Tighten the nuts on the first chuck and the second chuck; The jack lifts the second transition plate, the second transition plate lifts the disc spring, the disc spring lifts the first transition plate, the first transition plate pulls the lower hand cylinder fixing seat inward through the first set of tie rods, and the third transition plate pulls the upper hand cylinder fixing seat inward through the second set of tie rods; the upper hand cylinder fixing seat clamps the upper track through the pin shaft, and the lower hand cylinder fixing seat clamps the lower track through the pin shaft, realizing the clamping condition of the underground track changing equipment; Loosen the nuts on the first chuck and the second chuck; The jack lifts the second transition plate, the second transition plate lifts the disc spring, the disc spring lifts the first transition plate, the first transition plate pushes the upper hand cylinder fixing seat outward through the first set of spacers, and the third transition plate pushes the lower hand cylinder fixing seat outward through the first set of spacers; the upper hand cylinder fixing seat loosens the upper track through the pin, and the lower hand cylinder fixing seat loosens the lower track through the pin, realizing the loosening condition of the underground track changing equipment.

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