Pulling device for belt pulley of flotation machine

Abstract

The utility model relates to the field of wheel scrabbling devices, in particular to a flotation machine belt wheel scrabbling device. The utility model aims to solve the technical problems that the pulley puller mostly adopts a wrench to rotate a threaded shaft to perform pressing operation, the rotating part of the wrench is very easy to wear, the pressing operation wastes time and labor, multiple persons need to exchange to perform pressing operation, and the maintenance time and cost are increased. Comprising a jacking mechanism, a pulling claw mechanism is arranged on the lower side of the jacking mechanism, a belt wheel is arranged on the lower side of the pulling claw mechanism, a fixing shaft is slidably connected to the middle of the belt wheel, a fixing key is slidably connected to the side face of the fixing shaft through a sliding groove, and the fixing key is slidably connected with the belt wheel; two one-way valves are arranged in the jacking mechanism, and the installation directions of the two one-way valves are opposite. The jacking mechanism is arranged, a jacking handle is pressed up and down to push a jacking rod to move downwards, and under the action of counter-acting force, the jacking rod moves downwards to drive a pull claw mechanism to pull a belt pulley to move upwards.

Description

TECHNICAL FIELD

[0001] The utility model relates to a scraper wheel field, especially to a scraper wheel for flotation machine pulley. BACKGROUND

[0002] The scraper wheel for flotation machine pulley is a tool specially used for disassembling the pulley on the flotation machine, is an important mechanical maintenance tool, needs to have powerful drawing force, extensive applicability, simple operability and safety and other basic functions, has wide application scene.

[0003] In the prior art, the scraper wheel for pulley adopts a wrench to rotate a threaded shaft to perform pressing operation, the wrench rotating part is prone to wear, the pressing operation is time-consuming and laborious, multiple people are needed to exchange to perform the pressing operation, thereby increasing the maintenance time and cost, and three claws cannot work cooperatively, so that the claw fixing is not firm, the pulley is prone to damage, the flexibility of the scraper wheel for pulley is limited, and the working efficiency of the scraper wheel for pulley is reduced. UTILITY MODEL CONTENTS

[0004] (1) Technical problem to be solved

[0005] The utility model discloses a scraper wheel for flotation machine pulley to overcome the shortcoming that the scraper wheel for pulley adopts a wrench to rotate a threaded shaft to perform pressing operation, the wrench rotating part is prone to wear, the pressing operation is time-consuming and laborious, multiple people are needed to exchange to perform the pressing operation, thereby increasing the maintenance time and cost, and three claws cannot work cooperatively, so that the claw fixing is not firm, the pulley is prone to damage, the flexibility of the scraper wheel for pulley is limited, and the working efficiency of the scraper wheel for pulley is reduced.

[0006] (2) Technical scheme

[0007] In order to solve the above technical problem, the utility model provides a scraper wheel for flotation machine pulley, which comprises a jacking mechanism, the lower side of the jacking mechanism is provided with a claw mechanism, the lower side of the claw mechanism is provided with the pulley, the middle part of the pulley is slidably connected with a fixed shaft, the side surface of the fixed shaft is provided with an oval sliding groove, the oval sliding groove is slidably connected with a fixed key, the fixed key is slidably connected with the pulley, the side surface of the jacking mechanism is provided with a pressure relief valve, the inside of the jacking mechanism is provided with two check valves, the installation directions of the two check valves are opposite, the jacking mechanism comprises an outer cylinder body, the inside of the outer cylinder body is provided with a cavity, the cavity is filled with hydraulic oil, the inner side of the outer cylinder body is fixedly connected with an inner cylinder body, the inner side of one end of the inner cylinder body is provided with an annular circular groove, the annular circular groove is sleeved with a dustproof sealing ring, the inner side of the inner cylinder body is slidably connected with an upper piston and a lower piston, the two close end parts of the upper piston and the lower piston are provided with annular circular grooves, and the annular circular grooves are sleeved with oil sealing rings.

[0008] Preferably, the jacking mechanism further comprises a jacking rod, the lower surface of the lower piston is fixedly connected with the jacking rod, the lower end of the outer cylinder body is fixedly connected with a cylinder sleeve, the lower end of the cylinder sleeve is fixedly connected with a limiting block, the limiting block is in sliding connection with the jacking rod, the lower surface of the limiting block is fixedly connected with an adjusting shaft, the outer side of the adjusting shaft is provided with a thread, and the adjusting shaft is in sliding connection with the jacking rod.

[0009] Preferably, the jacking mechanism further comprises a jacking seat, the upper surface of the upper piston is fixedly connected with the jacking seat, the upper end of the jacking seat is rotatably connected with a synchronous rod through a rotating shaft, the two sides of the synchronous rod are rotatably connected with driving rods through rotating shafts, the other ends of the driving rods are fixedly connected with jacking handles, the middle parts of the driving rods are rotatably connected with prying frames through rotating shafts, the cross sections of the prying frames are L-shaped, and the prying frames are fixedly connected with the outer side surface of the outer cylinder body.

[0010] Preferably, the pressure relief valve comprises a sealing shell, the sealing shell is fixedly connected with the inner cylinder body, a circular hole is formed in the side surface of the sealing shell, a sealing head is in sliding connection with the circular hole, a return spring is fixedly connected between the sealing head and the sealing shell, a pressure relief shaft is fixedly connected with the inner side surface of the sealing head, the pressure relief shaft is in sliding connection with the outer cylinder body, and the end portion of the pressure relief shaft extending to the outside of the outer cylinder body is fixedly connected with a pressure relief handle.

[0011] Preferably, the one-way valve comprises a valve body, the valve body is fixedly connected with the inner cylinder body, a circular hole is formed in the side surface of the valve body, a ball head is in sliding connection with the circular hole, and a compression spring is fixedly connected between the ball head and the valve body.

[0012] Preferably, the claw mechanism comprises an adjusting sleeve, the adjusting sleeve is connected with the adjusting shaft through a thread, the outer side of the adjusting sleeve is rotatably connected with three shaft center rods through rotating shafts, the other ends of the shaft center rods are rotatably connected with clamping claws, the other ends of the clamping claws are rotatably connected with linkage rods, the outer side of the adjusting shaft is in sliding connection with a linkage seat, the linkage seat is rotatably connected with the linkage rods through rotating shafts, and the clamping claws are fixedly connected with a tension spring through a fixed block.

[0013] (3) Advantageous effects

[0014] 1. By arranging the jacking mechanism, the jacking handle is pressed up and down to drive the jacking rod to move downward, and under the action of the reaction force, the jacking rod moves downward to drive the claw mechanism to pull the belt pulley to move upward, thereby optimizing the internal structure of the belt pulley, reducing the number of operating personnel, shortening the maintenance time and reducing the maintenance cost.

[0015] 2、By setting the claw mechanism, pulling the linkage seat upward sliding to drive three clamping claws to open synchronously, the claw mechanism can be set outside the pulley, three clamping claws cooperate, increase the flexibility of the pulley wheel picker, and improve the working efficiency of the pulley wheel picker. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a whole structure schematic view of the utility model;

[0017] Figure 2 It is a jacking mechanism structure schematic view of the utility model;

[0018] Figure 3 It is an outer cylinder body, inner cylinder body spray section view of the utility model;

[0019] Figure 4 It is a cylinder sleeve section view of the utility model;

[0020] Figure 5 It is a pressure relief valve structure schematic view of the utility model;

[0021] Figure 6 It is a one-way valve structure schematic view of the utility model;

[0022] Figure 7 It is a claw mechanism structure schematic view of the utility model.

[0023] The marks in the drawing are: 1-fixed shaft, 2-fixed key, 3-pulley, 4-claw mechanism, 401-clamping claw, 402-axis rod, 403-linkage rod, 404-adjusting sleeve, 405-linkage seat, 406-tension spring, 5-jacking mechanism, 501-outer cylinder body, 502-inner cylinder body, 503-upper piston, 504-dustproof sealing ring, 505-oil sealing ring, 506-lower piston, 507-cylinder sleeve, 508-limiting block, 509-jacking rod, 510-adjusting shaft, 511-prying frame, 512-jacking seat, 513-synchronous rod, 514-driving rod, 515-jacking handle, 6-pressure relief valve, 601-pressure relief handle, 602-pressure relief shaft, 603-sealing head, 604-sealing shell, 605-return spring, 7-one-way valve, 701-valve body, 702-ball head, 703-pressing spring. DETAILED DESCRIPTION

[0024] The utility model will be further described below in combination with the drawings and examples. Examples

[0025] A kind of pulley picker of flotation machine, such as Figure 1 、 Figure 2 、 Figure 3As shown, including jacking mechanism 5, by setting jacking mechanism 5, the internal structure of the belt pulley wheel loader is optimized, the maintenance time of the operator is reduced, and the maintenance cost is reduced, the lower side of the jacking mechanism 5 is provided with the claw mechanism 4, through the setting of the claw mechanism 4, the three clamping claws can work together, increase the flexibility of the belt pulley wheel loader, improve the work efficiency of the belt pulley wheel loader, the lower side of the claw mechanism 4 is provided with the belt pulley 3, the middle part of the belt pulley 3 is slidably connected with the fixed shaft 1, the side surface of the fixed shaft 1 is provided with an oval sliding groove, the oval sliding groove is slidably connected with the fixed key 2, the cross section of the fixed key 2 is oval, the fixed key 2 is slidably connected with the belt pulley 3, the side surface of the jacking mechanism 5 is provided with the pressure relief valve 6, through the setting of the pressure relief valve 6, the jacking mechanism 5 is reset, the belt pulley wheel loader is quickly disassembled for the next belt pulley, the inside of the jacking mechanism 5 is provided with two check valves 7, through the setting of the check valve 7, the hydraulic oil flows between the outer cylinder body 501 and the inner cylinder body 502, using the incompressibility principle of liquid, providing support for belt pulley disassembly, the installation direction of the two check valves 7 is opposite.

[0026] As Figure 2 , Figure 3 , Figure 4As shown, the jacking mechanism 5 comprises an outer cylinder 501, a cavity is formed in the inner part of the outer cylinder 501, hydraulic oil is filled in the cavity, the inner side of the outer cylinder 501 is fixedly connected with an inner cylinder 502, an annular circular groove is formed in the inner side of one end of the inner cylinder 502, a dustproof sealing ring 504 is sleeved in the annular circular groove, the dustproof sealing ring 504 prevents impurities from entering the inner cylinder to damage the oil seal ring 505, and prevents gas from escaping at the same time, the inner side of the inner cylinder 502 is slidably connected with an upper piston 503 and a lower piston 506, annular circular grooves are formed in the two end parts of the upper piston 503 and the lower piston 506 close to each other, and oil seal rings 505 are sleeved in the annular circular grooves, a closed space is formed between the upper piston 503 and the lower piston 506 through the arrangement of the oil seal rings 505, so that the leakage of hydraulic oil is prevented, the lower surface of the lower piston 506 is fixedly connected with a jacking rod 509, the lower end of the outer cylinder 501 is fixedly connected with a cylinder sleeve 507, the lower end of the cylinder sleeve 507 is fixedly connected with a limiting block 508, the limiting block 508 is slidably connected with the jacking rod 509, the lower surface of the limiting block 508 and located at the outer side of the jacking rod 509 is fixedly connected with an adjusting shaft 510, a screw thread is formed in the outer side of the adjusting shaft 510, the adjusting shaft 510 is slidably connected with the jacking rod 509, the upper surface of the upper piston 503 is fixedly connected with a jacking seat 512, the upper end of the jacking seat 512 is rotatably connected with a synchronous rod 513 through a rotating shaft, the two sides of the synchronous rod 513 are rotatably connected with driving rods 514 through rotating shafts, the other end of the driving rod 514 is fixedly connected with a jacking handle 515, an anti-skid groove is formed in the outer side of the jacking handle 505, so that the hands of the operator are convenient to hold, the middle part of the driving rod 514 is rotatably connected with a prying frame 511 through a rotating shaft, the cross section of the prying frame 511 is L-shaped, and the prying frame 511 is fixedly connected with the outer side of the outer cylinder 501.

[0027] As shown in Figure 5 , the pressure relief valve 6 comprises a sealing shell 604, the sealing shell 604 is fixedly connected with the inner cylinder 502, a circular hole is formed in the side surface of the sealing shell 604, a sealing head 603 is slidably connected in the circular hole, the shape of the sealing head 603 is hemispherical, a return spring 605 is fixedly connected between the sealing head 603 and the sealing shell 604, a pressure relief shaft 602 is fixedly connected with the inner side surface of the sealing head 603, the pressure relief shaft 602 is slidably connected with the outer cylinder 501, and the end part of the pressure relief shaft 602 extending to the outside of the outer cylinder 501 is fixedly connected with a pressure relief handle 601.

[0028] As shown in Figure 6 , the one-way valve 7 comprises a valve body 701, the valve body 701 is fixedly connected with the inner cylinder 502, a circular hole is formed in the side surface of the valve body 701, a ball head 702 is slidably connected in the circular hole, the shape of the ball head 702 is hemispherical, and a compression spring 703 is fixedly connected between the ball head 702 and the valve body 701.

[0029] As shown in Figure 7As shown, the claw mechanism 4 comprises an adjusting sleeve 404 connected with the adjusting shaft 510 through threads, the outer side of the adjusting sleeve 404 is rotatably connected with three shaft rods 402 through pivots, the other end of the shaft rod 402 is rotatably connected with the clamping claw 401 through a pivot, the one end of the clamping claw 401 is in the shape of a barb, facilitating clamping and fixing the pulley, the other end of the clamping claw 401 is rotatably connected with the linkage rod 403 through a pivot, the outer side of the adjusting shaft 510 is slidably connected with the linkage seat 405, the outer side of the linkage seat 405 is provided with anti-skid grooves, facilitating the hands of the operator to hold, the linkage seat 405 is rotatably connected with the linkage rod 403 through a pivot, and the clamping claw 401 and the adjusting sleeve 404 are fixedly connected with the tension spring 406 through a fixed block.

[0030] Working principle: when the pulley extractor is used, the claw mechanism 4 is first sleeved outside the pulley 3, then the distance between the lifting rod 509 and the fixed shaft 1 is adjusted by rotating the lifting mechanism 5, then the lifting mechanism 5 is used to push the lifting rod 509 to move downward, under the action of the reaction force, the lifting rod 509 moves downward to drive the claw mechanism 4 to pull the pulley 3 to move upward, after the pulley 3 is removed, the claw mechanism 4 is operated to be separated from the pulley 3, then the lifting mechanism 5 is reset by using the pressure relief valve 6, and the next flotation machine pulley 3 can be disassembled.

[0031] When the claw mechanism 4 is sleeved outside the pulley 3, the linkage seat 405 is pulled to slide upward, the linkage seat 405 slides upward to pull one end of the linkage rod 403 to slide upward, the one end of the linkage rod 403 slides upward to drive the other end of the linkage rod 403 to move inward, the other end of the linkage rod 403 moves inward to drive the one end of the clamping claw 401 to move inward, under the action of the shaft rod 402, the one end of the clamping claw 401 moves inward to drive the other end of the clamping claw 401 to move outward, the other end of the clamping claw 401 moves outward to stretch the tension spring 406, after the three clamping claws 401 are opened, the claw mechanism 4 is sleeved outside the pulley 3, then the linkage seat 405 is loosened, the tension spring 406 is contracted to pull the clamping claw 401 to contact the pulley 3, under the action of the shaft rod 402, at this time, the lower end of the clamping claw 401 moves inward under the action of the tension spring 406 to drive the one end of the clamping claw 401 to move outward, the one end of the clamping claw 401 moves outward to drive the other end of the linkage rod 403 to move outward, the other end of the linkage rod 403 moves outward to drive the one end of the linkage rod 403 to move downward, the one end of the linkage rod 403 moves downward to drive the linkage seat 405 to slide downward, at this time, the claw mechanism 4 is fixed outside the pulley 3, the three clamping claws 401 work cooperatively, the flexibility of the pulley extractor is increased, and the working efficiency of the pulley extractor is improved.

[0032] When the distance between the jacking rod 509 and the fixed shaft 1 is adjusted by the rotating jacking mechanism 5, the jacking handle 515 is rotated to one side, the jacking handle 515 is rotated to one side to drive the driving rod 514 to rotate to one side, the driving rod 514 is rotated to one side to drive the prying frame 511 to rotate to one side, the prying frame 511 is rotated to one side to drive the outer cylinder body 501 to rotate to one side, the outer cylinder body 501 is rotated to one side to drive the cylinder sleeve 507 to rotate to one side, the cylinder sleeve 507 is rotated to one side to drive the limiting block 508 to rotate to one side, the limiting block 508 is rotated to one side to drive the adjusting shaft 510 to rotate to one side, under the action of the adjusting sleeve 404, the adjusting shaft 510 is rotated to one side to drive the jacking mechanism 5 to move downward, the jacking mechanism 5 moves downward to drive the jacking rod 509 to move downward, the jacking rod 509 moves downward to contact the fixed shaft 1, at this time, the pulley scraper can be disassembled by using the jacking mechanism 5, and the adjustability of the pulley scraper is increased, so that the pulley scraper can adapt to various working environments.

[0033] When the jacking rod 509 is pushed downward by using the jacking mechanism 5, the jacking handle 515 is pressed downward, the jacking handle 515 moves downward to drive one end of the driving rod 514 to move downward, under the action of the prying frame 511, one end of the driving rod 514 moves downward to drive the other end of the driving rod 514 to move upward, the other end of the driving rod 514 moves upward to drive the synchronous rod 513 to move upward, the synchronous rod 513 moves upward to drive the jacking seat 512 to move upward, the jacking seat 512 moves upward to drive the upper piston 503 to move upward, the upper piston 503 moves upward to push air into the inner cavity of the outer cylinder body 501 through the upper one-way valve 7, the air pushes hydraulic oil into the space between the upper piston 503 and the lower piston 506 through the lower one-way valve 7, and at the same time, a negative pressure space is formed between the upper piston 503 and the lower piston 506. The hydraulic oil in the outer cylinder body 501 is sucked into the space between the upper piston 503 and the lower piston 506 through the lower one-way valve 7, when the pressure on one side of the one-way valve 7 becomes smaller, the ball head 702 is compressed and pressed by the larger pressure side, at this time, the outer cylinder body 501 is connected with the inner cylinder body 502, and the hydraulic oil can flow. According to the incompressibility principle of liquid, the hydraulic oil continuously enters the space between the upper piston 503 and the lower piston 506 to push the lower piston 506 to move downward, and the lower piston 506 moves downward to push the jacking rod 509 to move downward under the action of the reaction force. The jacking rod 509 moves downward to drive the claw mechanism 4 to pull the pulley 3 to move upward, the internal structure of the pulley scraper is optimized, the maintenance time is shortened, and the maintenance cost is reduced.

[0034] When the operating claw mechanism 4 is disengaged from the belt pulley 3, the linkage seat 405 is pulled to slide upward, one end of the linkage rod 403 is pulled to slide upward, the other end of the linkage rod 403 is driven to move inward, one end of the clamping claw 401 is driven to move inward, under the action of the synchronous rod 513, the other end of the clamping claw 401 is driven to move outward, the other end of the clamping claw 401 is pulled to stretch the tension spring 406, and the three clamping claws 401 are opened, and the clamping claw 401 is disengaged from the belt pulley 3, so that the belt pulley 3 can be removed.

[0035] When the jacking mechanism 5 is reset by using the pressure relief valve 6, the pressure relief handle 601 is pulled to slide outward, the pressure relief shaft 602 is driven to slide outward, the sealing head 603 is driven to slide outward, the reset spring 605 is compressed, the outer cylinder body 501 is communicated with the inner cylinder body 502, the jacking rod 509 is pushed to move upward, and the jacking mechanism 5 can be reset.

[0036] The above-described embodiments only express the preferred embodiments of the utility model, the description is more specific and detailed, but it cannot be understood as the limitation of the utility model patent scope. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of deformations, improvements and substitutions can be made, which belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A pulley feeder for a flotation machine, characterized in that, The device includes a lifting mechanism (5), a claw mechanism (4) on the lower side of the lifting mechanism (5), a pulley (3) on the lower side of the claw mechanism (4), a fixed shaft (1) slidably connected to the middle of the pulley (3), an elliptical groove on the side of the fixed shaft (1), a fixed key (2) slidably connected in the elliptical groove, the fixed key (2) slidably connected to the pulley (3), a pressure relief valve (6) on the side of the lifting mechanism (5), and two one-way valves (7) inside the lifting mechanism (5), the two one-way valves (7) being installed in opposite directions. The lifting mechanism (5) includes an outer cylinder (501), the outer cylinder (501) has a cavity inside which hydraulic oil is added. An inner cylinder (502) is fixedly connected to the inner side of the outer cylinder (501). An annular groove is opened on the inner side of one end of the inner cylinder (502), and a dustproof sealing ring (504) is fitted inside the annular groove. An upper piston (503) and a lower piston (506) are slidably connected to the inner side of the inner cylinder (502). An annular groove is opened at the two close ends of the upper piston (503) and the lower piston (506), and an oil sealing ring (505) is fitted inside the annular groove.

2. The flotation machine pulley changer according to claim 1, characterized in that, The lifting mechanism (5) further includes a lifting rod (509), which is fixedly connected to the lower surface of the lower piston (506). A cylinder liner (507) is fixedly connected to the lower end of the outer cylinder (501). A limit block (508) is fixedly connected to the lower end of the cylinder liner (507). The limit block (508) is slidably connected to the lifting rod (509). An adjusting shaft (510) is fixedly connected to the lower surface of the limit block (508). A thread is provided on the outer side of the adjusting shaft (510). The adjusting shaft (510) is slidably connected to the lifting rod (509).

3. The flotation machine pulley remover according to claim 2, characterized in that, The lifting mechanism (5) further includes a lifting seat (512), which is fixedly connected to the upper surface of the upper piston (503). The upper end of the lifting seat (512) is rotatably connected to a synchronizing rod (513) via a rotating shaft. The two sides of the synchronizing rod (513) are rotatably connected to a driving rod (514) via a rotating shaft. The other end of the driving rod (514) is fixedly connected to a lifting handle (515). The middle part of the driving rod (514) is rotatably connected to a prying frame (511) via a rotating shaft. The cross-section of the prying frame (511) is L-shaped. The prying frame (511) is fixedly connected to the outer side of the outer cylinder (501).

4. The flotation machine pulley remover according to claim 3, characterized in that, The pressure relief valve (6) includes a sealing shell (604), which is fixedly connected to the inner cylinder (502). A circular hole is provided on the side of the sealing shell (604), and a sealing head (603) is slidably connected in the circular hole. A return spring (605) is fixedly connected between the sealing head (603) and the sealing shell (604). A pressure relief shaft (602) is fixedly connected to the inner side of the sealing head (603). The pressure relief shaft (602) is slidably connected to the outer cylinder (501). A pressure relief handle (601) is fixedly connected to the end of the pressure relief shaft (602) that passes through the outer cylinder (501) and extends to the outside of the outer cylinder (501).

5. A flotation machine pulley changer according to claim 4, characterized in that, The one-way valve (7) includes a valve body (701), which is fixedly connected to the inner cylinder (502). A circular hole is provided on the side of the valve body (701), and a ball head (702) is slidably connected in the circular hole. A compression spring (703) is fixedly connected between the ball head (702) and the valve body (701).

6. A flotation machine pulley remover according to claim 5, characterized in that, The pull claw mechanism (4) includes an adjusting sleeve (404), which is threadedly connected to the adjusting shaft (510). Three spindle rods (402) are rotatably connected to the outer side of the adjusting sleeve (404) via a rotating shaft. The other end of the spindle rod (402) is rotatably connected to a clamping claw (401) via a rotating shaft. The other end of the clamping claw (401) is rotatably connected to a linkage rod (403) via a rotating shaft. A linkage seat (405) is slidably connected to the outer side of the adjusting shaft (510). The linkage seat (405) and the linkage rod (403) are rotatably connected via a rotating shaft. A tension spring (406) is fixedly connected between the clamping claw (401) and the adjusting sleeve (404) via a fixing block.

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