Scraper chain pre-tightening force testing device
By designing a scraper chain pretension test device including oil cylinder, hand pressure pump and intelligent pretension display, the lack of chain pretension measurement in the prior art is solved, and the chain pretension is efficient. Intuitive measurement improves the service life of the scraper conveyor.
Patent Information
- Application Number
- CN202323479807.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-20
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2033-12-20
AI Technical Summary
The prior art lacks a special chain pretension device for measuring chain tightness, which results in chain tightness adjustments rely on the experience of the operator and affect the service life of the scraper conveyor.
Design a scraper chain pretension test device including oil cylinder, hand pressure pump, intelligent pretension display and PLC conversion module. The pretension force of the chain is directly measured through the lever structure and hydraulic system, and the specific value is displayed through the PLC module. .
It realizes simple, intuitive and efficient chain preload measurement, the structure is detachable and easy to carry, and improves operating efficiency.
Smart Images
Figure CN222166370U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of supporting equipment for coal mine machinery, and in particular relates to a scraper chain preload force testing device. Background Art
[0002] Chain is the main component of scraper conveyor. The tightness of the chain directly affects the service life of the scraper conveyor during use. Too loose or too tight chain will cause the sprocket shaft group and chain of the scraper conveyor to wear more severely. Selecting the appropriate chain preload is very important for the scraper conveyor. The existing technology does not have a special device for measuring chain preload. Generally, the operator adjusts the tightness of the chain based on work experience. Therefore, it is necessary to develop a special device for measuring chain preload. Summary of the invention
[0003] The utility model aims to overcome the deficiencies of the prior art and provide a scraper chain preload force testing device.
[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a scraper chain preload test device, including an oil cylinder and a hand pump, characterized in that: the outlet of the hand pump is connected to a tee, the other two pipe openings of the tee are respectively connected to an intelligent preload display and an oil inlet pipe, and the end of the oil inlet pipe is connected to the oil inlet of the oil cylinder; the oil outlet of the oil cylinder is connected to the inlet of the hand pump through an oil return pipe; the piston rod of the oil cylinder is hinged to the top of the first clamp, the bottom end of the oil cylinder is hinged to the second clamp through a connecting pin, and the first clamp and the second clamp are connected by a connecting rod: one end of the connecting rod is hinged to the middle of the first clamp, and the other end of the connecting rod is hinged to the middle of the second clamp.
[0005] The intelligent preload force display is internally provided with a PLC conversion module, which can convert pressure into preload force.
[0006] The main body of the first clamp is a No. 1 vertical arm, the upper half of the No. 1 vertical arm is inclined relative to the lower half, an upper groove and a No. 1 through hole perpendicular to the upper groove are provided at the top of the No. 1 vertical arm; a rectangular hole and a No. 2 through hole vertically penetrating the rectangular hole are provided in the middle of the No. 1 vertical arm, a lower groove is provided at the bottom of the No. 1 vertical arm, and two bottom feet of the lower groove form a clamping hand;
[0007] The piston rod of the oil cylinder is inserted into the upper groove, and a pin is inserted into the No. 1 through hole to hinge the piston rod of the oil cylinder to the top of the first clamp; one end of the connecting rod is inserted into the rectangular hole, and a pin is inserted into the No. 2 through hole to hinge the connecting rod to the first clamp.
[0008] The second clamping member body is a No. 2 vertical arm, a deep groove is formed at the top of the No. 2 vertical arm, a No. 3 through hole and a No. 4 through hole are formed vertically in the deep groove, a lower groove is formed at the bottom of the No. 2 vertical arm, and two bottom feet of the lower groove form a clamping hand;
[0009] The connecting piece at the bottom end of the oil cylinder and the other end of the connecting rod are inserted into the deep groove, and two pins are respectively inserted into the third through hole and the fourth through hole to hinge the bottom end of the oil cylinder with the second clamp, and at the same time, hinge the other end of the connecting rod with the second clamp.
[0010] The working principle of the PLC conversion module is: the preload force values corresponding to different pressures are programmed in the module, and when the pressure change signal is received, the specific preload force is displayed on the intelligent preload force display.
[0011] The beneficial effects of the utility model are as follows: the first clamp and the second clamp are assembled into a set of lever structures through the oil cylinder and the connecting rod with the connecting pin, and the pressure is converted into the preload force by the PLC conversion module, so that the preload force of the scraper chain can be directly measured. The device has a simple structure, can be disassembled and decomposed, is easy to carry, is simple and intuitive to operate, and has high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a schematic diagram of the use state of the utility model;
[0013] Figure 2 This is a structural diagram of the first card of the utility model;
[0014] Figure 3 This is a structural diagram of the second card of the utility model;
[0015] In the figure: 1-oil cylinder, 2-first clamp, 21-No. 1 vertical arm, 22-upper groove, 23-No. 1 through hole, 24-rectangular hole, 25-No. 2 through hole; 3-second clamp, 31-No. 2 vertical arm, 32-deep groove, 33-No. 3 through hole, 34-No. 4 through hole; 4-connecting rod, 5-oil inlet pipe, 6-oil return pipe, 7-intelligent preload display, 8-tee, 9-hand pump, 10-chain to be tested. DETAILED DESCRIPTION
[0016] See Figure 1-3 A scraper chain preload test device comprises an oil cylinder 1 and a hand pressure pump 9, characterized in that: the outlet of the hand pressure pump 9 is connected to a tee 8, the other two pipe openings of the tee 8 are respectively connected to an intelligent preload display 7 and an oil inlet pipe 5, and the end of the oil inlet pipe 5 is connected to the oil inlet of the oil cylinder 1; the oil outlet of the oil cylinder 1 is connected to the inlet of the hand pressure pump 9 through an oil return pipe 6; the piston rod of the oil cylinder 1 is hinged to the top of the first clamp 2, the bottom end of the oil cylinder 1 is hinged to the second clamp 3 through a connecting pin, and the first clamp 2 and the second clamp 3 are connected through a connecting rod 4: one end of the connecting rod 4 is hinged to the middle of the first clamp 2, and the other end of the connecting rod 4 is hinged to the middle of the second clamp 3.
[0017] The intelligent preload force display 7 is internally provided with a PLC conversion module, which can convert the pressure into the preload force.
[0018] The main body of the first clamping member 2 is a No. 1 vertical arm 21, the upper half of the No. 1 vertical arm 21 is inclined relative to the lower half, an upper groove 22 and a No. 1 through hole 23 perpendicular to the upper groove 22 are formed at the top of the No. 1 vertical arm 21; a rectangular hole 24 and a No. 2 through hole 25 perpendicularly penetrating the rectangular hole 24 are formed in the middle of the No. 1 vertical arm 21, and a lower groove is formed at the bottom of the No. 1 vertical arm 21, and two bottom feet of the lower groove form a clamping hand;
[0019] The piston rod of the oil cylinder 1 is inserted into the upper groove 22, and a pin is inserted into the No. 1 through hole 23 to hinge the piston rod of the oil cylinder 1 to the top of the first clamp 2; one end of the connecting rod 4 is inserted into the rectangular hole 24, and a pin is inserted into the No. 2 through hole 25 to hinge the connecting rod 4 to the first clamp 2.
[0020] The main body of the second clamping member 3 is a second vertical arm 31, a deep groove 32 is formed at the top of the second vertical arm 31, a third through hole 33 and a fourth through hole 34 are formed perpendicular to the deep groove 32, and a lower groove is formed at the bottom of the second vertical arm 31, and two bottom feet of the lower groove form a clamping hand;
[0021] The connecting piece at the bottom end of the oil cylinder 1 and the other end of the connecting rod 4 are inserted into the deep groove 32, and two pins are respectively inserted into the third through hole 33 and the fourth through hole 34 to hinge the bottom end of the oil cylinder 1 with the second clamp 3, and at the same time, hinge the other end of the connecting rod 4 with the second clamp 3.
[0022] Usage steps: clamp the clamping hand of the first clamping member 2 to the first flat ring of the chain 10 to be tested, and clamp the clamping hand of the second clamping member 3 to the second flat ring of the chain 10 to be tested.
[0023] Use the hand pump 9 to pressurize the oil cylinder 1, and the hydraulic oil enters the oil cylinder 1 through the oil inlet pipe 5, pushing the piston rod to move outward, driving the first clamp 2 to move, so that the clamping hand at the bottom of the first clamp 2 moves to the right so that the two clamping hands are tightened, and when the vertical ring of the measuring chain 10 is loosened, the liquid supply is stopped. At this time, the size of the measured preload can be obtained through the intelligent preload display 7. When the test is over, the hand pump 9 releases the pressure, the piston rod of the oil cylinder 1 is retracted, and the clamping hand at the bottom of the first clamp 2 moves to the left, so that the two clamping hands are opened and reset, completing a preload measurement.
Claims
1. A scraper chain preload test device, comprising an oil cylinder (1) and a hand pump (9), Features: The outlet of the hand pump (9) is connected to a tee (8), and the other two pipe openings of the tee (8) are respectively connected to an intelligent preload display (7) and an oil inlet pipe (5), and the end of the oil inlet pipe (5) is connected to the oil inlet of the oil cylinder (1); the oil outlet of the oil cylinder (1) is connected to the inlet of the hand pump (9) through an oil return pipe (6); the piston rod of the oil cylinder (1) is hinged to the top of the first clamp (2), the bottom of the oil cylinder (1) is hinged to the second clamp (3) through a connecting pin, and the first clamp (2) and the second clamp (3) are connected through a connecting rod (4): one end of the connecting rod (4) is hinged to the middle of the first clamp (2), and the other end of the connecting rod (4) is hinged to the middle of the second clamp (3).
2. A scraper chain preload test device as claimed in claim 1, Features: The intelligent preload force display (7) is internally provided with a PLC conversion module, which can convert pressure into preload force.
3. A scraper chain preload test device as claimed in claim 1, Features: The main body of the first clamping member (2) is a No. 1 vertical arm (21), the upper half of the No. 1 vertical arm (21) is inclined relative to the lower half, and the top of the No. 1 vertical arm (21) is provided with an upper groove (22) and a No. 1 through hole (23) perpendicular to the upper groove (22); the middle of the No. 1 vertical arm (21) is provided with a rectangular hole (24) and a No. 2 through hole (25) perpendicularly penetrating the rectangular hole (24); the bottom of the No. 1 vertical arm (21) is provided with a lower groove, and two bottom feet of the lower groove form a clamping hand; The piston rod of the oil cylinder (1) is inserted into the upper groove (22), and a pin is inserted into the first through hole (23) to hinge the piston rod of the oil cylinder (1) to the top end of the first clamp (2); one end of the connecting rod (4) is inserted into the rectangular hole (24), and a pin is inserted into the second through hole (25) to hinge the connecting rod (4) to the first clamp (2).
4. A scraper chain preload test device as claimed in claim 1, Features: The second clamping member (3) has a main body of a second vertical arm (31), a deep groove (32) is provided at the top of the second vertical arm (31), a third through hole (33) and a fourth through hole (34) are provided perpendicular to the deep groove (32), and a lower groove is provided at the bottom of the second vertical arm (31), and two bottom feet of the lower groove form a clamping hand; The connecting piece at the bottom end of the oil cylinder (1) and the other end of the connecting rod (4) are both inserted into the deep groove (32), and two pins are respectively inserted into the third through hole (33) and the fourth through hole (34), so that the bottom end of the oil cylinder (1) is hinged to the second clamping piece (3), and the other end of the connecting rod (4) is hinged to the second clamping piece (3).