A jacking device for rock pipe jacking machine

Abstract

The present invention discloses a jacking device for a rock pipe jacking machine, which relates to the technical field of rock pipe jacking machines, and includes a propulsion component and a conveying mechanism for conveying hydraulic oil to the propulsion component, wherein the conveying mechanism includes a shell, a driving component is provided on one side of the shell, a driving wheel is provided on the output end of the driving component, a corrugated surrounding plate is fixedly connected around the edge of one side of the driving wheel, and the surface of the corrugated surrounding plate away from the driving wheel is continuous and has regular and obvious undulating edges, a partition is fixedly connected inside the shell, and multiple groups of extrusion components matched with the corrugated surrounding plates are fixedly connected on the partition, and each group of the extrusion components includes a positioning sleeve. In the present invention, the degree of contraction and expansion of the space inside all positioning sleeves and hydraulic slide cylinders is the same, so that the volume of hydraulic oil obtained by each group of hydraulic telescopic rods is the same, and the effect of synchronous extension of multiple groups of hydraulic telescopic rods is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of rock pipe jacking machines, and in particular to a jacking device for a rock pipe jacking machine. Background Art

[0002] Rock pipe jacking machine is a special mechanical equipment for pipe jacking in rock formations. Rock pipe jacking machine squeezes or peels rocks through mechanical force to form underground space, and is widely used in the construction of rock tunnels such as subways and high-speed railways.

[0003] The jacking device of the rock pipe jacking machine is its core component, which is mainly composed of the main jacking cylinder, jacking iron, guide rails, etc. The hydraulic system of the device generates pressure oil through the oil pump to drive the main jacking cylinder to extend and retract, thereby pushing the rock pipe jacking machine forward. The jacking effect of the rock pipe jacking machine is achieved through frequent alternating thrusts.

[0004] The rock pipe jacking machine is equipped with multiple sets of hydraulic telescopic rods, and the pressure generated by the multiple sets of hydraulic telescopic rods is used to propel the rock pipe jacking machine. After a long time, the hydraulic oil pollution and leakage of the hydraulic systems corresponding to different hydraulic telescopic rods may be different, which will affect the pressure and flow of different hydraulic systems. At the same time, the wear of the hydraulic valve will also affect the collaborative working effect of the multiple sets of hydraulic telescopic rods, and then affect the output pressure of the corresponding hydraulic telescopic rods, resulting in inconsistent pressure output by the hydraulic telescopic rods, thereby reducing the service life of the overall device. Summary of the invention

[0005] The purpose of the present invention is to provide a jacking device for a rock pipe jacking machine, which solves the problem that after a long time, the hydraulic oil contamination degree and leakage of the hydraulic system corresponding to different hydraulic telescopic rods may be different, resulting in inconsistent pressure output by the hydraulic telescopic rods, thereby reducing the service life of the overall device.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] A jacking device for a rock jacking pipe machine comprises a propulsion assembly and a conveying mechanism for conveying hydraulic oil to the propulsion assembly, the conveying mechanism comprises a shell, a driving assembly is arranged on one side of the shell, a driving wheel is arranged on the output end of the driving assembly, a corrugated surrounding plate is fixedly connected around the edge of one side of the driving wheel, the surface of the corrugated surrounding plate away from the driving wheel is a continuous edge with regular and obvious undulating fluctuations, a partition is fixedly connected inside the shell, a plurality of groups of extrusion assemblies matched with the corrugated surrounding plate are fixedly connected on the partition, each group of the extrusion assemblies comprises a positioning sleeve, a hydraulic slide cylinder is slidably sleeved inside the positioning sleeve, a roller matched with the corrugated surrounding plate is rotatably connected to the hydraulic slide cylinder near the side of the corrugated surrounding plate, an elastic assembly is arranged between the outer side of the hydraulic slide cylinder and the partition, a flow detection assembly for detecting the flow of hydraulic oil is arranged on one side of the positioning sleeve, a plurality of groups of input one-way valves penetrating the partition and communicating with the corresponding interior of the positioning sleeve and a plurality of groups of output one-way valves penetrating the partition and communicating with the corresponding interior of the positioning sleeve are arranged on the partition.

[0008] As a further solution of the present invention: the propulsion assembly includes a back plate, a hydraulic telescopic rod, a top seat, a slide rail mechanism and a multi-way reversing valve, the hydraulic telescopic rod is provided in multiple groups, each group of the hydraulic telescopic rod is fixedly arranged on one side of the back plate, and the top seat is fixed at the output end of each group of hydraulic telescopic rods.

[0009] As a further solution of the present invention: each group of hydraulic telescopic rods includes an outer sleeve fixedly connected to the back plate, a piston is slidably fitted inside the outer sleeve, the piston divides the internal cavity of the outer sleeve into an extension cavity and a contraction cavity, and a movable push rod is fixedly connected to the side of the piston close to the contraction cavity and slidably fitted with one end of the outer sleeve, and the movable push rod is fixedly connected to the top seat at the end away from the piston.

[0010] As a further solution of the present invention: the multi-way reversing valve is arranged on one side of the shell, and an oil tank is arranged on one side of the multi-way reversing valve. Each group of the output one-way valve and the matching input one-way valve are respectively connected to the two corresponding input ports of the multi-way reversing valve through two groups of first infusion pipes, and the two groups of matching output ends of the multi-way reversing valve are respectively connected to the oil tank and the extension cavity of the corresponding hydraulic telescopic rod through the second infusion pipe, and each group of the contraction cavity is connected to the oil tank through the third infusion pipe.

[0011] As a further solution of the present invention: the flow detection components are provided with multiple groups, each group of the flow detection components includes a metal plug plate and a flow monitoring box, each group of the metal plug plates are fixedly set on one side of the corresponding pressure liquid slide cylinder, each group of the flow monitoring boxes are fixedly connected to the partition plate and fixedly set on one side of the corresponding pressure liquid slide cylinder, the interior of each group of the flow monitoring boxes is slidably matched with the corresponding metal plug plate, and the interior of each group of the flow monitoring boxes is fixedly provided with a laser rangefinder that matches the metal plug plate.

[0012] As a further solution of the present invention: a support plate is provided on one side of the back plate, and the support plate is fixedly connected to the outer sleeve.

[0013] As a further solution of the present invention: the slide rail mechanism includes a guide rail and a plurality of pads, the guide rail is fixedly arranged on the plurality of pads, and a plurality of pulleys are rotatably connected to the guide rail.

[0014] As a further solution of the present invention: the driving assembly includes a motor fixedly connected to the housing, the output end of the motor is coaxially fixedly connected to the driving wheel, and the elastic assembly includes a spring fitted between the hydraulic slide cylinder and the partition.

[0015] Beneficial effects of the present invention:

[0016] 1. In the present invention, the motor drives the corrugated surrounding plate to rotate, and the roller moves along the undulating edge of the corrugated surrounding plate. The spring maintains the pressing state between the roller and the corrugated surrounding plate, so that all the hydraulic slide cylinders can continuously reciprocate along the undulating edge of the corrugated surrounding plate, so that the space inside all the positioning sleeves and hydraulic slide cylinders can continuously and synchronously shrink and expand. Since the space inside all the positioning sleeves and hydraulic slide cylinders shrinks and expands to the same extent, the volume of hydraulic oil obtained by each group of hydraulic telescopic rods is the same, achieving the effect of synchronous extension of multiple groups of hydraulic telescopic rods.

[0017] 2. In the present invention, the laser rangefinder can detect the distance between the metal plug plate and one end of the inner side of the back plate of the flow monitoring box, and transmit the detected value to the controller, which compares the detected data. If one or more sets of detected data change inconsistently, it means that the volume of the output hydraulic oil is inconsistent, and it is necessary to stop the work for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of the hydraulic telescopic rod of the present invention;

[0021] Figure 3 It is a schematic diagram of the longitudinal section structure of the hydraulic telescopic rod of the present invention;

[0022] Figure 4 It is a schematic diagram of the longitudinal section structure of the conveying mechanism of the present invention;

[0023] Figure 5 It is a schematic diagram of the structure of the motor, the driving wheel and the corrugated surrounding plate of the present invention when they are coordinated;

[0024] Figure 6 yes Figure 5 A schematic diagram of the partially enlarged structure at center A;

[0025] Figure 7 It is a schematic diagram of the longitudinal section structure of the liquid pressure slide cylinder of the present invention.

[0026] In the figure: 1. conveying mechanism; 101. shell; 102. partition; 103. motor; 104. driving wheel; 105. corrugated surrounding plate; 106. positioning sleeve; 107. hydraulic slide cylinder; 108. roller; 109. spring; 110. input non-return valve; 111. output non-return valve; 112. metal plug plate; 113. flow monitoring box; 114. laser rangefinder; 2. back plate; 3. hydraulic telescopic rod; 301. outer sleeve; 302. extension chamber; 303. contraction chamber; 304. piston; 305. movable push rod; 4. top seat; 5. slide rail mechanism; 501. pad; 502. guide rail; 503. pulley; 6. support plate; 7. multi-way reversing valve; 8. oil tank. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-7As shown, the present invention is a jacking device for a rock jacking machine, including a propulsion assembly and a conveying mechanism 1 for conveying hydraulic oil to the propulsion assembly, and the propulsion assembly includes a back plate 2, a hydraulic telescopic rod 3, a top seat 4, a slide rail mechanism 5 and a multi-way reversing valve 7. The slide rail mechanism 5 includes a guide rail 502 and multiple groups of pads 501, the guide rail 502 is fixedly arranged on the multiple groups of pads 501, and multiple groups of pulleys 503 are rotatably connected to the guide rail 502. When in use, the staff can place the steel pipe section on the pulley 503 to reduce the resistance during pushing. There are multiple groups of hydraulic telescopic rods 3, each group of hydraulic telescopic rods 3 is fixedly arranged on one side of the back plate 2, and the top seat 4 is fixed at the output end of each group of hydraulic telescopic rods 3. After the hydraulic telescopic rod 3 is extended, it will push the steel pipe section to move to one side, thereby achieving the jacking effect.

[0029] The conveying mechanism 1 includes a housing 101, a motor 103 is provided on one side of the housing 101, a driving wheel 104 is coaxially fixedly connected to the output end of the motor 103, a corrugated surrounding plate 105 is fixedly connected around the edge of one side of the driving wheel 104, and the surface of the corrugated surrounding plate 105 away from the driving wheel 104 is continuous and has regular and obvious undulating edges. A partition 102 is fixedly connected inside the housing 101, and multiple groups of extrusion components matched with the corrugated surrounding plate 105 are fixedly connected to the partition 102, and the hydraulic oil can be driven to flow through the extrusion components. Each group of extrusion components includes a positioning sleeve 106, and a liquid pressure slide cylinder 107 is slidably sleeved inside the positioning sleeve 106. The liquid pressure slide cylinder 107 is rotatably connected to the side of the corrugated surrounding plate 105 and is matched with the corrugated surrounding plate 105. The roller 108 can rotate along the side of the corrugated surrounding plate 105, and a spring 109 is provided between the outer side of the liquid pressure slide cylinder 107 and the partition 102, and the spring 109 maintains the pressure state between the roller 108 and the corrugated surrounding plate 105.

[0030] The partition 102 is provided with a plurality of input check valves 110 penetrating the partition 102 and communicating with the interior of the corresponding positioning sleeve 106, and a plurality of output check valves 111 penetrating the partition 102 and communicating with the interior of the corresponding positioning sleeve 106. The input check valves 110 and the output check valves 111 can realize the one-way flow of hydraulic oil. The multi-way reversing valve 7 is arranged on one side of the housing 101. The multi-way reversing valve 7 is composed of a plurality of reversing valves, and can realize the reversing of the plurality of reversing valves at the same time. An oil tank 8 is arranged on one side of the multi-way reversing valve 7, and the oil tank 8 stores hydraulic oil. Each set of output check valves 111 and the matching input check valves 110 are respectively connected to the two corresponding input ports of the multi-way reversing valve 7 through two sets of first infusion pipes, and the two matching output ends of the multi-way reversing valve 7 are respectively connected to the oil tank 8 and the extension cavity 302 of the corresponding hydraulic telescopic rod 3 through the second infusion pipe, and each set of contraction cavity 303 is connected to the oil tank 8 through the third infusion pipe, wherein the first infusion pipe, the second infusion pipe and the third infusion pipe are all high-pressure oil pipes, which only play the effect of transmitting hydraulic oil.

[0031] Each set of hydraulic telescopic rods 3 includes an outer sleeve 301 fixedly connected to the back plate 2, a piston 304 is slidably fitted inside the outer sleeve 301, and the piston 304 divides the inner cavity of the outer sleeve 301 into an extension cavity 302 and a contraction cavity 303. The piston 304 is fixedly connected to a movable push rod 305 slidably fitted with one end of the outer sleeve 301 on the side close to the contraction cavity 303, and the movable push rod 305 is fixedly connected to the top seat 4 at the end away from the piston 304. The contraction or extension state of the hydraulic telescopic rod 3 is adjusted by adjusting the relative volume of the hydraulic oil inside the extension cavity 302 and the contraction cavity 303. A support plate 6 is provided on one side of the back plate 2, and the support plate 6 is fixedly connected to the outer sleeve 301. The hydraulic telescopic rod 3 is supported by the support plate 6, thereby ensuring the stability of the hydraulic telescopic rod 3 during use.

[0032] A flow detection assembly for detecting the flow of hydraulic oil is arranged on one side of the positioning sleeve 106. The flow detection assembly is provided with multiple groups. Each group of flow detection assembly includes a metal plug plate 112 and a flow monitoring box 113. Each group of metal plug plates 112 is fixedly arranged on one side of the corresponding hydraulic slide cylinder 107. Each group of flow monitoring boxes 113 is fixedly connected to the partition 102 and is fixedly arranged on one side of the corresponding hydraulic slide cylinder 107. The interior of each group of flow monitoring boxes 113 is slidably matched with the corresponding metal plug plate 112. A laser rangefinder 114 matched with the metal plug plate 112 is fixedly arranged inside each group of flow monitoring boxes 113. The laser rangefinder 114 can detect the distance between one end of the metal plug plate 112 and the opposite end inside the flow monitoring box 113, and transmit the detected value to the controller. The controller compares all the detected data. If the changes of one or more groups of detected data are inconsistent, it means that the volume of the output hydraulic oil is inconsistent, and it is necessary to stop the work for maintenance.

[0033] The working principle of the present invention is as follows: when in use, the motor 103 drives the driving wheel 104 to rotate, and the driving wheel 104 drives the corrugated surrounding plate 105 to rotate. At this time, the roller 108 will move along the undulating edge of the corrugated surrounding plate 105, and the spring 109 maintains the pressing state between the roller 108 and the corrugated surrounding plate 105, so that all the pressure liquid slide cylinders 107 can continuously reciprocate along the undulating edge of the corrugated surrounding plate 105, thereby making all the positioning sleeves 106 and the space inside the pressure liquid slide cylinder 107 continuously and synchronously shrink and expand. During expansion, the input check valve 110 is opened, the output check valve 111 is closed, and the hydraulic oil enters the positioning sleeve 106 and the hydraulic slide cylinder 107 through the input check valve 110; during contraction, the input check valve 110 is closed, the output check valve 111 is opened, and the hydraulic oil inside the positioning sleeve 106 and the hydraulic slide cylinder 107 is output to the outside through the output check valve 111. Since the space inside all positioning sleeves 106 and the hydraulic slide cylinder 107 contracts and expands to the same extent, the volume of hydraulic oil obtained by each group of hydraulic telescopic rods 3 is the same;

[0034] The flow direction of the hydraulic oil is controlled by the multi-way reversing valve 7, thereby controlling the extension and contraction state of the hydraulic telescopic rod 3. When the hydraulic telescopic rod 3 needs to be extended, the valve core of the multi-way reversing valve 7 is driven to deflect to the corresponding side, so that the hydraulic oil enters the extension chamber 302 from the inside of the oil tank 8, thereby squeezing the piston 304 and the movable push rod 305, and squeezing the hydraulic oil in the contraction chamber 303 into the inside of the oil tank 8, thereby achieving the extension effect; when the hydraulic telescopic rod 3 needs to be contracted, the valve core of the multi-way reversing valve 7 is driven to deflect to the other side, so that the hydraulic oil in the extension chamber 302 is transported to the oil tank 8, so that the extension chamber 302 contracts, driving the contraction chamber 303 to expand, thereby achieving the contraction effect of the hydraulic telescopic rod 3;

[0035] The laser rangefinder 114 can detect the distance between the metal plug plate 112 and one end of the inner back plate 2 of the flow monitoring box 113, and transmit the detected value to the controller, which compares the detected data. If one or more sets of detected data changes are inconsistent, it means that the volume of the output hydraulic oil is inconsistent and maintenance is required.

[0036] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A jacking device for a rock pipe jacking machine, characterized in that: The invention comprises a propulsion component and a delivery mechanism (1) for delivering hydraulic oil to the propulsion component, wherein the delivery mechanism (1) comprises a housing (101), a driving component is arranged on one side of the housing (101), a driving wheel (104) is arranged on the output end of the driving component, a corrugated surrounding plate (105) is fixedly connected around the edge of one side of the driving wheel (104), a surface of the corrugated surrounding plate (105) away from the driving wheel (104) presents a continuous edge with regular and obvious undulations, a partition plate (102) is fixedly connected inside the housing (101), a plurality of groups of extrusion components matched with the corrugated surrounding plate (105) are fixedly connected on the partition plate (102), and each group of the extrusion components comprises a positioning sleeve (106) The positioning sleeve (106) is internally slidably sleeved with a hydraulic slide (107), and the hydraulic slide (107) is rotatably connected to a roller (108) that cooperates with the corrugated surrounding plate (105) on the side close to the corrugated surrounding plate (105). An elastic component is arranged between the outer side of the hydraulic slide (107) and the partition (102). A flow detection component for detecting the flow of hydraulic oil is arranged on one side of the positioning sleeve (106). The partition (102) is provided with a plurality of groups of input check valves (110) that penetrate the partition (102) and are connected to the interior of the corresponding positioning sleeve (106), and a plurality of groups of output check valves (111) that penetrate the partition (102) and are connected to the interior of the corresponding positioning sleeve (106).

2. A jacking device for a rock pipe jacking machine according to claim 1, characterized in that: The propulsion assembly comprises a back plate (2), a hydraulic telescopic rod (3), a top seat (4), a slide rail mechanism (5) and a multi-way reversing valve (7); the hydraulic telescopic rod (3) is provided in a plurality of groups, each group of the hydraulic telescopic rod (3) is fixedly arranged on one side of the back plate (2); and the top seat (4) is fixedly arranged on the output end of each group of the hydraulic telescopic rod (3).

3. A jacking device for a rock pipe jacking machine according to claim 2, characterized in that: Each group of the hydraulic telescopic rods (3) comprises an outer sleeve (301) fixedly connected to the back plate (2); a piston (304) is slidably engaged inside the outer sleeve (301); the piston (304) divides the inner cavity of the outer sleeve (301) into an extension cavity (302) and a contraction cavity (303); a movable push rod (305) slidably engaged with one end of the outer sleeve (301) is fixedly connected to the side of the piston (304) close to the contraction cavity (303); and the movable push rod (305) is fixedly connected to the top seat (4) at one end away from the piston (304).

4. A jacking device for a rock pipe jacking machine according to claim 3, characterized in that: The multi-way reversing valve (7) is arranged on one side of the housing (101), and an oil tank (8) is arranged on one side of the multi-way reversing valve (7). Each group of the output check valve (111) and the matching input check valve (110) are respectively connected to the two corresponding groups of input ports of the multi-way reversing valve (7) through two groups of first infusion pipes, and the two groups of matching output ends of the multi-way reversing valve (7) are respectively connected to the oil tank (8) and the extension chamber (302) of the corresponding hydraulic telescopic rod (3) through the second infusion pipe, and each group of the contraction chamber (303) is connected to the oil tank (8) through the third infusion pipe.

5. A jacking device for a rock pipe jacking machine according to claim 1, characterized in that: The flow detection components are provided in multiple groups, each group of the flow detection components comprises a metal plug plate (112) and a flow monitoring box (113), each group of the metal plug plate (112) is fixedly arranged on one side of the corresponding pressure liquid slide cylinder (107), each group of the flow monitoring box (113) is fixedly connected to the partition plate (102) and fixedly arranged on one side of the corresponding pressure liquid slide cylinder (107), each group of the flow monitoring box (113) is slidably matched with the corresponding metal plug plate (112) inside, and each group of the flow monitoring box (113) is fixedly provided with a laser rangefinder (114) matched with the metal plug plate (112) inside.

6. A jacking device for a rock pipe jacking machine according to claim 2, characterized in that: A support plate (6) is provided on one side of the back plate (2), and the support plate (6) is fixedly connected to the outer sleeve (301).

7. A jacking device for a rock pipe jacking machine according to claim 2, characterized in that: The slide rail mechanism (5) comprises a guide rail (502) and a plurality of pads (501); the guide rail (502) is fixedly arranged on the plurality of pads (501); and a plurality of pulleys (503) are rotatably connected to the guide rail (502).

8. A jacking device for a rock pipe jacking machine according to claim 1, characterized in that: The driving assembly comprises a motor (103) fixedly connected to the housing (101), the output end of the motor (103) is coaxially fixedly connected to the driving wheel (104), and the elastic assembly comprises a spring (109) fitted between the liquid pressure slide cylinder (107) and the partition (102).

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