CN215432421U - Mining hydraulic pin puller - Google Patents

Mining hydraulic pin puller Download PDF

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Publication number
CN215432421U
CN215432421U CN202121319496.0U CN202121319496U CN215432421U CN 215432421 U CN215432421 U CN 215432421U CN 202121319496 U CN202121319496 U CN 202121319496U CN 215432421 U CN215432421 U CN 215432421U
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China
Prior art keywords
pin
fixed
piston rod
bolt
plates
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Active
Application number
CN202121319496.0U
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Chinese (zh)
Inventor
张盛
年福田
殷宗余
周多好
张智柳
汤泽高
苏国涛
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China Coal Xinji Energy Co Ltd
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China Coal Xinji Energy Co Ltd
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Priority to CN202121319496.0U priority Critical patent/CN215432421U/en
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Publication of CN215432421U publication Critical patent/CN215432421U/en
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Abstract

The utility model relates to a mining hydraulic pin puller, which comprises: the mining hydraulic pin puller comprises an oil cylinder, a piston rod, round steel rods, a ring plate, a ring chain, connecting plates and a pin pulling bolt, wherein the piston rod is arranged on the oil cylinder, one ends of at least two round steel rods are respectively fixed on the circumference of the oil cylinder, the other ends of the round steel rods are fixed on the circumference of the ring plate, a pin pulling hole is formed in the center of the ring plate, the connecting plates are respectively fixed on two symmetrical sides of the end part of the piston rod, the ring chain is fixed on one end of the pin pulling bolt, one end of the pin pulling bolt is arranged between the two connecting plates, the connecting bolt sequentially penetrates through the connecting plates, the ring chain and the connecting plates and is fixed together by a nut, the other end of the pin pulling bolt is provided with reverse threads, the piston rod extends out of the pin pulling hole, the pin pulling bolt is connected with the threads in a fixed pin, and the piston rod contracts to pull out the fixed pin.

Description

Mining hydraulic pin puller
Technical Field
The utility model relates to a hydraulic device for removing a fixing pin of fully mechanized mining equipment, in particular to a mining hydraulic pin puller.
Background
At present, the service cycle of the hydraulic support of the fully mechanized mining face of Liuzhuang coal mine is generally longer. Partial structures such as a top beam and a shield beam of the hydraulic support are connected through side pins, so that whether the disassembling speed of the pins is high or low influences the disassembling efficiency of the hydraulic support to a great extent. The traditional method for removing the pin of the hydraulic support is to manually hammer or manually pull out the pin of the support body by utilizing a 'primary and secondary' screw thread pull pin which is processed by the drill rod in an auxiliary matching way. The construction is long, inefficient, and staff's physical demands is big, and the fragile accessory in the work progress simultaneously because every average weight of hydraulic support side pin reaches 40KG, has certain safety risk in the work progress.
Disclosure of Invention
The utility model aims to solve the problems of long time consumption, low efficiency and large labor consumption of workers in the conventional pin pulling construction, and provides a mining hydraulic pin puller.
In order to achieve the purpose of the utility model, the utility model adopts the following technical scheme:
the utility model relates to a mining hydraulic pin puller, which comprises: hydro-cylinder, piston rod, round steel pole, ring plate, ring chain, connecting plate and pull pin bolt, the piston rod dress is on the hydro-cylinder, wherein: one end of at least two round steel rods is respectively fixed on the circumference of the oil cylinder, the other end of each round steel rod is fixed on the circumference of the circular ring plate, a pin pulling hole is formed in the center of the circular ring plate, connecting plates are respectively fixed on two symmetrical sides of the end of the piston rod, a ring chain is fixed at one end of a pin pulling bolt, one end of the pin pulling bolt is arranged between the two connecting plates, the connecting bolt sequentially penetrates through the connecting plates, the ring chain and the connecting plates and is fixed together by a nut, reverse threads are formed at the other end of the pin pulling bolt, the piston rod extends out of the pin pulling hole, the pin pulling bolt is connected with the threads in the fixed pin, and the fixed pin is pulled out by contraction of the piston rod.
The utility model relates to a mining hydraulic pin puller, which comprises: the number of the round steel rods is three, one end of each round steel rod is fixed on the circumference of the oil cylinder, and the other end of each round steel rod is fixed on the circumference of the circular ring plate.
The utility model relates to a mining hydraulic pin puller, which comprises: the aperture of the pin pulling hole is larger than the outer diameter of the ring chain, the outer diameter of the pin pulling bolt and the outer diameter of the piston rod.
Compared with the prior art, the utility model has the following advantages:
the mining hydraulic pin puller is simple to operate, convenient to use, high in safety and reliability and strong in adaptability. By field trial and popularization, the defects and shortcomings of the conventional construction method are avoided, and the construction efficiency is improved.
Drawings
Fig. 1 is a schematic front view of a mining hydraulic pin extractor of the present invention, with parts broken away for clarity.
In fig. 1, reference numeral 1 denotes an oil cylinder; the reference numeral 2 is a piston rod; the reference numeral 3 is a round steel rod; reference numeral 4 is a circular ring plate; reference numeral 5 is a cyclic chain; reference numeral 6 denotes a pin-pulling bolt; reference numeral 7 is a connecting bolt; reference numeral 8 is a pin-pulling hole; reference numeral 9 is a connecting plate; reference numeral 10 is a fixing pin.
Detailed Description
As shown in FIG. 1, the mining hydraulic pin puller of the utility model comprises: hydro-cylinder 1, piston rod 2, round steel pole 3, ring plate 4, ring chain 5, connecting plate 9 and pin pulling bolt 6, piston rod 2 dress is on hydro-cylinder 1, and the one end of three round steel poles 3 is fixed respectively on the circumference of hydro-cylinder 1, and the other end of round steel pole 3 is fixed on the circumference of ring plate 4, and it has one to pull out pinhole 8 to open at ring plate 4 central authorities, and the aperture of pulling out pinhole 8 is greater than the external diameter of ring chain 5, the external diameter of pin pulling bolt 6 and the 2 external diameters of piston rod. Connecting plates 9 are respectively fixed on two symmetrical sides of the end of the piston rod 2, a ring chain 5 is fixed at one end of a pin pulling bolt 6, one end of the pin pulling bolt 6 is arranged between the two connecting plates 9, a connecting bolt 11 sequentially penetrates through the connecting plates 9, the ring chain 5 and the connecting plates 9 and is fixed together by a nut, reverse threads are arranged at the other end of the pin pulling bolt 6, the piston rod 2 extends out of a pin pulling hole 8, the pin pulling bolt 6 is connected with the threads in a fixing pin 10, and the fixing pin 10 is pulled out by contraction of the piston rod 2.
Principle of operation
Firstly, inserting a pin pulling bolt 6 end into a central threaded hole of a side pin of a bracket and tightly screwing the pin pulling bolt into the central threaded hole by using a 'primary and secondary screw thread', then integrally hoisting a pin puller to a proper height position of a pin hole at one side of a hydraulic bracket by using a chain block or a pneumatic block, enabling the end of a circular plate 4 to be close to the surface of the bracket at the position of the side pin hole, supplying liquid to an oil cylinder 1 by operating a hydraulic pump to enable a piston rod 2 to extend out for a certain length, connecting the piston rod 2 with a ring chain 5 by using the pin pulling bolt 6, and finally reversely supplying liquid to the oil cylinder 1 by operating a reversing valve of the hydraulic pump to enable the piston rod 2 to continuously contract, and slowly pulling out the side pin of the bracket along the axis center direction.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and those skilled in the art should make various changes and modifications to the technical solution of the present invention without departing from the spirit of the present invention, which falls within the scope of the present invention defined by the claims.

Claims (3)

1. A mining hydraulic pin puller comprises: hydro-cylinder (1), piston rod (2), round steel pole (3), ring plate (4), endless chain (5), connecting plate (9) and pull pin bolt (6), and piston rod (2) are adorned on hydro-cylinder (1), its characterized in that: one end of at least two round steel rods (3) is fixed on the circumference of the oil cylinder (1) respectively, the other end of each round steel rod (3) is fixed on the circumference of the circular ring plate (4), a pin pulling hole (8) is formed in the center of the circular ring plate (4), connecting plates (9) are fixed on two symmetrical sides of the end of the piston rod (2) respectively, a ring chain (5) is fixed at one end of a pin pulling bolt (6), one end of the pin pulling bolt (6) is installed between the two connecting plates (9), a connecting bolt (11) sequentially penetrates through the connecting plates (9), the ring chain (5) and the connecting plates (9) and are fixed together through nuts, reverse threads are formed at the other end of the pin pulling bolt (6), the piston rod (2) extends out of the pin pulling hole (8), the pin pulling bolt (6) is connected with the threads in the fixing pin (10), and the fixing pin (10) is pulled out through contraction of the piston rod (2).
2. The mining hydraulic pin puller according to claim 1, characterized in that: the number of the round steel rods (3) is three, one ends of the round steel rods are respectively fixed on the circumference of the oil cylinder (1), and the other ends of the round steel rods are fixed on the circumference of the circular ring plate (4).
3. The mining hydraulic pin puller according to claim 2, characterized in that: the aperture of the pin pulling hole (8) is larger than the outer diameter of the ring chain (5), the outer diameter of the pin pulling bolt (6) and the outer diameter of the piston rod (2).
CN202121319496.0U 2021-06-11 2021-06-11 Mining hydraulic pin puller Active CN215432421U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121319496.0U CN215432421U (en) 2021-06-11 2021-06-11 Mining hydraulic pin puller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121319496.0U CN215432421U (en) 2021-06-11 2021-06-11 Mining hydraulic pin puller

Publications (1)

Publication Number Publication Date
CN215432421U true CN215432421U (en) 2022-01-07

Family

ID=79711101

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202121319496.0U Active CN215432421U (en) 2021-06-11 2021-06-11 Mining hydraulic pin puller

Country Status (1)

Country Link
CN (1) CN215432421U (en)

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