A hydraulic deviation adjustment device for a mobile and retractable belt conveyor at the tail end

Abstract

The present invention discloses a hydraulic deviation adjustment device for a mobile and retractable belt conveyor at the tail, comprising a comprehensive excavator, a bridge belt, a lifting jack, a trolley, and a tail of the belt conveyor. The comprehensive excavator is connected to the lifting jack through the bridge belt, the lifting jack is connected to the tail of the belt conveyor through the trolley, the head of the bridge belt is connected to the tail of the comprehensive excavator, the tail of the bridge belt is connected to the trolley, the lifting jack comprises an upper base, a lower base, a cylinder, a retractable piston, a connecting pin, and an oil inlet, the trolley is provided with a connecting splint, and the lower end of the trolley is fixedly connected to the tail of the belt conveyor through the connecting splint. The present invention has the following advantages: the purpose of lifting the tail is achieved by adopting a mechanical automatic lifting tail method, and rapid deviation adjustment is realized; the tail of the belt conveyor can be adjusted in all sections, and the safety hazards caused by moving the hand chain hoist back and forth are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of coal mine machinery, in particular to a hydraulic deviation adjustment device for a mobile and retractable belt conveyor at the tail of a machine. Background Art

[0002] At present, in the supporting system after comprehensive mechanized tunneling of coal mines, the gangue cut by the tunneling head machine is transported to the belt on the tail of the belt conveyor through a bridge belt, and then transported to the main transportation system of the mine, and finally to the well. The bridge belt runs on the tail of the belt conveyor in a straddling manner through a small sports car, and the position of the tail directly determines the safe and smooth state of the belt system's delivery. However, during the tunneling progress of the tunneling machine, the tunnel floor cannot be cut completely flat, which is bound to cause the tail of the belt conveyor to be skewed and undulating, and the belt cannot be close to the buffer roller on the tail of the belt conveyor, which is prone to deviation and spillage. The bridge belt stops and starts, resulting in the inability to deliver goods continuously, which directly affects the tunneling efficiency. Especially when the tunnel encounters faults and structural belts and needs to change the slope, the impact will be greater.

[0003] The traditional way to adjust the deviation is to use a special lifting point for construction, hang a hand chain hoist to lift the tail of the belt conveyor, and then use a wooden pad to pad the tail to adjust the deviation, and sometimes even take the risk of manually prying the belt to make a temporary deviation. The traditional deviation adjustment method has a complicated process and requires a lot of people. It requires moving the hand chain hoist back and forth and manually prying the belt, which poses a certain safety threat. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a hydraulic deviation adjustment device for a mobile and retractable belt conveyor at the tail of a machine, which can realize rapid deviation adjustment and reduce potential safety hazards.

[0005] The present invention solves the above technical problems through the following technical solutions: a hydraulic deviation adjustment device for a mobile and retractable belt conveyor at the tail of a machine, comprising a comprehensive excavator, a bridge belt, a lifting jack, a trolley, and a tail of a belt conveyor, wherein the comprehensive excavator is connected to the lifting jack through a bridge belt, and the lifting jack is connected to the tail of the belt conveyor through a trolley;

[0006] The head of the bridge belt is connected to the tail of the multi-purpose excavator, and the tail of the bridge belt is connected to a trolley;

[0007] The lifting jack comprises an upper base, a lower base, a cylinder body, a retractable piston, a connecting pin, and an oil inlet. The cylinder body is connected to the upper base and the lower base respectively through the connecting pin. The retractable piston is arranged in the cylinder body. The oil inlet is arranged on the outer surface of the cylinder body. The oil inlet is connected to the hydraulic pump through a reversing valve.

[0008] The trolley is provided with a connecting clamping plate, and the lower end of the trolley is fixedly connected to the tail of the belt conveyor through the connecting clamping plate.

[0009] As an optimized technical solution, the head of the bridge belt is tilted downward at a certain angle.

[0010] As an optimized technical solution, the upper end of the connecting splint is fixedly connected to the top of the trolley by bolts, and the lower end of the connecting splint is fixedly connected to the bottom of the tail of the belt conveyor by bolts.

[0011] As an optimized technical solution, a supporting beam is arranged above the trolley.

[0012] As an optimized technical solution, the upper base is fixedly connected to the supporting beam by means of suture bolts.

[0013] As an optimized technical solution, the upper base is provided with fixing holes for matching with the suture bolts for fixing the connection.

[0014] As an optimized technical solution, the hydraulic pump includes two input and output oil pipes. A first stop valve is provided on the hydraulic pump output oil pipe connected to the reversing valve, and a second stop valve is provided on the hydraulic pump output oil pipe connected to other hydraulic oil circuits of the tunnel boring machine.

[0015] As an optimized technical solution, there are two oil inlets, and the two oil outlets are respectively arranged at the upper end and the lower end of the right side of the cylinder body.

[0016] As an optimized technical solution, the two output oil pipes of the reversing valve are respectively connected to the two oil outlets.

[0017] As an optimized technical solution, the reversing valve adopts a three-position four-way reversing valve.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] 1. Realize rapid deviation adjustment: With the mechanical automatic lifting method for the tail of the excavator, you only need to start the hydraulic pump of the excavator and operate the handle of the three-position four-way reversing valve to realize the extension and retraction of the lifting jack, thereby achieving the purpose of lifting the tail of the excavator and realizing rapid deviation adjustment.

[0020] 2. Reduce potential safety hazards: The entire tail section of the belt conveyor can be adjusted, and the position can be adjusted as needed, avoiding the potential safety hazards caused by moving the hand chain hoist back and forth. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a hydraulic deviation adjustment device for a mobile and retractable belt conveyor at the tail of the present invention;

[0022] Figure 2 It is a schematic diagram of the connection between the lifting jack, the reversing valve and the hydraulic pump in the present invention;

[0023] Figure 3 Schematic diagram of the connection between the trolley and the tail of the belt conveyor in the present invention.

[0024] Among them, 1. comprehensive excavator; 2. bridge belt; 3. lifting jack; 4. trolley; 5. tail of belt conveyor; 6. supporting beam; 7. connecting splint; 8. reversing valve; 9. hydraulic pump; 10. first stop valve; 11. second stop valve; 31. upper base; 311. fixing hole; 32. lower base; 33. cylinder body; 34. retractable piston; 35. connecting pin; 36. oil inlet; 41. wheel; 71. bolt. DETAILED DESCRIPTION

[0025] The following is a detailed description of an embodiment of the present invention. This embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation method and a specific operation process are given, but the protection scope of the present invention is not limited to the following embodiment.

[0026] See also Figure 1-3 As shown, a hydraulic deviation adjustment device for a mobile and retractable belt conveyor at the tail of a machine includes a comprehensive excavation machine 1, a bridge belt 2, a lifting jack 3, a trolley 4, and a belt conveyor tail 5. The comprehensive excavation machine 1 is connected to the lifting jack 3 through the bridge belt 2, and the lifting jack 3 is connected to the belt conveyor tail 5 through the trolley 4.

[0027] The head of the bridge belt 2 is connected to the tail of the multi-purpose excavator 1 , the head of the bridge belt 2 is tilted downward at a certain angle, and the tail of the bridge belt 2 is connected to a trolley 4 .

[0028] For details, see Figure 2 The lifting jack 3 includes an upper base 31, a lower base 32, a cylinder body 33, a retractable piston 34, a connecting pin 35, and an oil inlet 36. The cylinder body 33 is connected to the upper base 31 and the lower base 32 respectively through the connecting pin 35. The retractable piston 34 is arranged in the cylinder body 33. The oil inlet 36 is arranged on the outer surface of the cylinder body 33. There are two oil inlets 36. The two oil outlets 36 are respectively arranged at the upper end and the lower end of the right side of the cylinder body 33. The oil inlet 36 is connected to the hydraulic pump 9 through the reversing valve 8. The hydraulic pump 9 includes two input and output oil pipes. The first stop valve 10 is provided on the output oil pipe of the hydraulic pump 9 connected to the reversing valve 8, and the second stop valve 11 is provided on the output oil pipe of the hydraulic pump 9 connected to other hydraulic oil circuits of the comprehensive excavator. The two output oil pipes of the reversing valve 8 are respectively connected to the two oil outlets 36. Preferably, the reversing valve 8 adopts a three-position four-way reversing valve. If necessary, the pipeline connection can also be achieved by connecting two-way, three-way, variable head, special connecting pin, etc.

[0029] The lower end of the trolley 4 is fixedly connected to the belt conveyor tail 5 through a connecting splint 7. The trolley 4 is provided with a connecting splint 7. The upper end of the connecting splint 7 is fixedly connected to the top of the trolley 4 through a bolt 71, and the lower end of the connecting splint 7 is fixedly connected to the bottom of the belt conveyor tail 5 through a bolt 71. A supporting beam 6 is provided above the trolley 4. The upper base 31 is fixedly connected to the supporting beam 6 through a suture bolt. The upper base 31 is provided with a fixing hole 311 that cooperates with the suture bolt for fixed connection.

[0030] Working principle: After completing the installation of the device, start the excavator 1, turn on the hydraulic pump 9, then close the second stop valve 11, open the first stop valve 10, slowly operate the three-position four-way reversing valve 8, observe the extension and contraction of the lifting jack 3, and mark the lifting and lowering positions on the reversing valve 8. It should be noted that every time the tail 5 of the belt conveyor needs to be adjusted, Figure 3 As shown, it is only necessary to adjust the fixed installation of the bridge belt 2 and the belt conveyor tail 5, use the connecting clamp 7 with the special bolts 16 to fix the trolley 4 and the belt conveyor tail 5 together, and then repeat the above steps, start the excavator 1, turn on the hydraulic pump 9, close the second stop valve 11, open the first stop valve 10, and slowly operate the three-position four-way reversing valve 8 to realize the extension and retraction of the lifting jack 3, thereby achieving the purpose of adjusting the tail.

[0031] In addition, if it is necessary to adjust the tail of the machine at other locations, it is only necessary to release the connecting splint 7, and then start the walking motor of the tunnel boring machine 1 to drive the bridge belt 2 to move forward and backward, thereby changing the relative position of the lifting jack 3 and the belt conveyor depot, and then repeat the above steps.

[0032] The hydraulic deviation adjustment device for the mobile and retractable belt conveyor at the tail of the machine described in the present invention adopts a mechanical automatic lifting method for the tail of the machine, and does not require the construction of a lifting point or the climbing and hanging of a hand chain hoist. It only needs to start the hydraulic pump of the excavator and operate the handle of the three-position four-way reversing valve to achieve the extension and retraction of the lifting jack, thereby achieving the purpose of lifting the tail of the machine, and can achieve safe and rapid deviation adjustment of the tail of the machine and efficient cutting footage. The device ensures the stability, reliability, safety and efficiency of the hydraulic system, can realize the adjustment of the entire section of the tail of the belt conveyor, adjust the deviation position according to the needs, avoid the safety hazards caused by moving the hand chain hoist back and forth, reduce the investment of manpower and material resources, and has strong practicality.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hydraulic deviation adjustment device for a mobile and retractable belt conveyor at the tail, characterized in that: It includes a comprehensive excavator, a bridge belt, a lifting jack, a trolley, and a belt conveyor tail. The comprehensive excavator is connected to the lifting jack through the bridge belt, and the lifting jack is connected to the belt conveyor tail through the trolley. The head of the bridge belt is connected to the tail of the excavator, the tail of the bridge belt is connected to a trolley, and the head of the bridge belt is tilted downward at a certain angle; The lifting jack comprises an upper base, a lower base, a cylinder body, a retractable piston, a connecting pin, and an oil inlet. The cylinder body is connected to the upper base and the lower base respectively through the connecting pin. The retractable piston is arranged in the cylinder body. The oil inlet is arranged on the outer surface of the cylinder body. The oil inlet is connected to the hydraulic pump through a reversing valve. The trolley is provided with a connecting splint, and the lower end of the trolley is fixedly connected to the tail of the belt conveyor through the connecting splint. A supporting beam is arranged above the trolley, and the upper base is fixedly connected to the supporting beam through a suture bolt.

2. The hydraulic deviation adjustment device for the tail movable retractable belt conveyor according to claim 1 is characterized in that: The upper end of the connecting clamp is fixedly connected to the top of the trolley by bolts, and the lower end of the connecting clamp is fixedly connected to the bottom of the tail of the belt conveyor by bolts.

3. The hydraulic deviation adjustment device for the tail movable retractable belt conveyor according to claim 1 is characterized in that: The upper base is provided with fixing holes for fixing with suture bolts.

4. The hydraulic deviation adjustment device for the tail movable retractable belt conveyor according to claim 1 is characterized in that: The hydraulic pump includes two input and output oil pipes. A first stop valve is provided on the hydraulic pump output oil pipe connected to the reversing valve, and a second stop valve is provided on the hydraulic pump output oil pipe connected to other hydraulic oil circuits of the excavator.

5. The hydraulic deviation adjustment device for the tail movable retractable belt conveyor according to claim 1 is characterized in that: There are two oil inlets, which are respectively arranged at the upper end and the lower end of the right side of the cylinder body.

6. The hydraulic deviation adjustment device for the tail movable retractable belt conveyor according to claim 5 is characterized in that: The two output oil pipes of the reversing valve are respectively connected to the two oil inlets.

7. The hydraulic deviation adjustment device for the tail movable retractable belt conveyor according to claim 6 is characterized in that: The reversing valve is a three-position four-way reversing valve.

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