Portable special lifting appliance for water-jet propeller

Abstract

A portable special lifting appliance for a water-jet propeller comprises a front longitudinal beam and a rear longitudinal beam which are connected in series in the front-back horizontal direction, the front longitudinal beam and the rear longitudinal beam are made of C-shaped steel, a C-shaped groove opening of the front longitudinal beam is located in the middle of the bottom end of the rear longitudinal beam, and a front hanging suite is arranged at the front end of the front longitudinal beam. The front hanging suite is made of C-shaped steel capable of being arranged on a front longitudinal beam in a sleeving mode, an opening of a C-shaped groove of the front hanging suite is located in the middle of the bottom end of the front hanging suite, a lower hanging ring seat is arranged at the top end of the front hanging suite and connected with the bottom end of a hanging ring chain in a hanging mode, and the top end of the hanging ring chain is connected with an upper hanging ring seat in a hanging mode. The utility model aims to provide the portable special lifting appliance for the water-jet propeller, which can be used for quickly dismounting or mounting the water-jet propellers of various special vehicles, greatly improving the maintenance efficiency, reducing the time required by maintenance, reducing the maintenance cost and simultaneously reducing the labor intensity of maintenance personnel.

Description

Technical Field

[0001] The utility model relates to a special hanging device for a portable water jet propulsion device. Background Art

[0002] A water jet propulsion system is a type of propulsion system that uses the reaction force generated by the jet of water to drive the special vehicle forward. A water jet propulsion system generally includes components such as an impeller pump, a pipe, a suction port, and a nozzle. The water jet propulsion system can change the direction of the water jet through the nozzle to achieve the control of the special vehicle.

[0003] Water jets generally have an irregular shape. During the maintenance process, due to their unique irregular shape, there is a large unbalanced torque during the lifting of the water jet. The disassembly and installation process involves many steps, is difficult, and time-consuming. It also requires high technical skills from the operators and is prone to safety accidents.

[0004] Waterjets are usually installed in a small cabin. When a waterjets that have been running for a certain period of time need to be disassembled, assembled, or repaired, the space in the cabin is too small, and general lifting equipment cannot be set up and used in the cabin, while the weight of the waterjets is relatively large. Since the special vehicle waterjets are very inconvenient to disassemble and install, it will greatly affect the maintenance efficiency and safety of the operation. In daily operations, maintenance personnel often do not have suitable lifting tools during lifting, which leads to a lot of energy spent on disassembly and assembly, and wastes precious repair time. Therefore, it is necessary to design a special lifting device that is convenient for the disassembly and assembly of special vehicle waterjets, so as to better solve this problem and make the disassembly and assembly of waterjets safer and more efficient. Utility Model Content

[0005] The purpose of the utility model is to provide a portable special lifting device for water jet propulsion, which can quickly disassemble or install water jet propulsion devices of various special vehicles, greatly improve maintenance efficiency, reduce maintenance time, reduce maintenance costs, and reduce the labor intensity of maintenance personnel.

[0006] The utility model is a portable water jet propulsion device special sling, comprising a front longitudinal beam and a rear longitudinal beam arranged in series along the front and rear horizontal directions, the front longitudinal beam and the rear longitudinal beam are respectively made of C-shaped steel, the C-shaped slot openings of the front longitudinal beam are respectively located at the middle of the bottom end of the rear longitudinal beam, the front end of the front longitudinal beam is set with a front hanging kit, the front hanging kit is made of C-shaped steel that can be sleeved on the front longitudinal beam, the C-shaped slot opening of the front hanging kit is located at the middle of the bottom end of the front hanging kit, and the side wall of the front hanging kit is screwed on A front hanging kit set screw is provided, the inner end of the front hanging kit set screw can be pressed against the side wall of the front longitudinal beam, a lower lifting ring seat is provided at the top of the front hanging kit, the lower lifting ring seat is connected to the bottom end of the lifting ring chain, the top end of the lifting ring chain is connected to the upper lifting ring seat, the upper lifting ring seat is fixed to the top plate of the cabin by bolts, the rear end of the front longitudinal beam is inserted into the front part of the connecting sleeve, the side wall of the front part of the connecting sleeve is screwed with a front connecting sleeve set screw, and the inner end of the front connecting sleeve set screw can be pressed against the side wall of the front longitudinal beam;

[0007] The front end of the rear longitudinal beam is inserted into the rear part of the connecting sleeve, and the rear connecting sleeve front set screw is screwed on the side wall of the rear part of the connecting sleeve, and the inner end of the rear connecting sleeve front set screw can be pressed against the side wall of the rear longitudinal beam;

[0008] The connecting sleeve is made of C-shaped steel that can be sleeved on the front longitudinal beam and the rear longitudinal beam, and the C-shaped groove opening of the connecting sleeve is located in the middle of the bottom end of the connecting sleeve;

[0009] A left pin shaft seat is fixed to the left side of the rear end of the rear longitudinal beam, and the left pin shaft seat is connected to the top end of the left oblique support leg through the left pin shaft, and the axis of the left pin shaft is located in the front-rear horizontal direction; a right pin shaft seat is fixed to the right side of the rear end of the rear longitudinal beam, and the right pin shaft seat is connected to the top end of the right oblique support leg through the right pin shaft, and the axis of the right pin shaft is located in the front-rear horizontal direction;

[0010] Two four-wheel rail cars are arranged in the front longitudinal beam and the rear longitudinal beam, and the two four-wheel rail cars can move to the front end of the front longitudinal beam or to the rear end of the rear longitudinal beam;

[0011] Each of the four-wheel rail vehicles comprises a vertical plate, and the front and rear ends of the two vertical plates are respectively provided with a rotating wheel shaft, the middle part of each rotating wheel shaft is respectively connected to the corresponding vertical plate, and the left and right ends of each rotating wheel shaft are respectively rotatably provided with a running wheel, and the bottom end of the circumferential surface of each running wheel is respectively attached to the two sides of the inner bottom end of the front longitudinal beam and / or the rear longitudinal beam, and the lower part of the two vertical plates extends downward and extends out of the C-shaped groove opening of the corresponding front longitudinal beam and / or the rear longitudinal beam, and the lower part of the two vertical plates is respectively provided with a hanging hole, and a hand hoist is respectively hung at each hanging hole;

[0012] A middle hanging kit is set in the middle of the front longitudinal beam, and the middle hanging kit is made of C-shaped steel that can be sleeved on the front longitudinal beam. The C-shaped slot opening of the middle hanging kit is located in the middle of the bottom end of the middle hanging kit. The side wall of the middle hanging kit is screwed with a middle hanging kit set screw, and the inner end of the middle hanging kit set screw can be against the side wall of the front longitudinal beam. A middle hanging seat is provided at the top of the middle hanging kit, and the middle hanging seat is connected to the bottom end of the pull ring chain. A crossbeam is provided above the pull ring chain along the left and right horizontal directions. The crossbeam is made of C-shaped steel, and the C-shaped slot openings of the crossbeam are located in the middle of the bottom end of the crossbeam. A four-wheeled vehicle is provided in the crossbeam, and the four-wheeled vehicle can move to both ends of the crossbeam.

[0013] The four-wheel vehicle comprises a straight board, and wheel axles are respectively arranged at the left and right ends of the straight board, and the middle part of each wheel axle is respectively connected to the straight board, and a rotating wheel is rotatably arranged at the left and right ends of each wheel axle, and the bottom end of the circumferential surface of each rotating wheel is respectively attached to the two sides of the inner bottom end of the cross beam, and the lower part of the straight board extends downward and extends out of the C-shaped groove opening of the cross beam, and a hanging hole is arranged at the lower part of the straight board, and the top end of the pull ring chain is connected to the hanging hole by hooking;

[0014] A left hanging kit is fixed to the left end of the crossbeam. The left hanging kit is made of C-shaped steel that can be sleeved on the crossbeam. The C-shaped slot opening of the left hanging kit is located in the middle of the bottom end of the left hanging kit. A left hanging kit fixing screw is screwed on the side wall of the left hanging kit. The inner end of the left hanging kit fixing screw can be against the side wall of the crossbeam.

[0015] A right hanging kit is fixed to the right end of the crossbeam. The right hanging kit is made of C-shaped steel that can be mounted on the crossbeam. The C-shaped slot opening of the right hanging kit is located in the middle of the bottom end of the right hanging kit. A right hanging kit set screw is screwed onto the side wall of the right hanging kit. The inner end of the right hanging kit set screw can be against the side wall of the crossbeam.

[0016] A left hanging seat is arranged at the top of the left hanging kit, and a right hanging seat is arranged at the top of the right hanging kit. The left hanging seat and the right hanging seat are fixedly connected to the top plate of the cabin through a clamp that can be quickly disassembled and assembled.

[0017] Preferably, a front limiting cover plate is fixed to the front end of the front longitudinal beam, and a rear limiting cover plate is fixed to the rear end of the rear longitudinal beam.

[0018] Preferably, a left limit cover plate is fixed to the left end of the cross beam, and a right limit cover plate is fixed to the right end of the cross beam.

[0019] Preferably, a pin shaft seat fixing sleeve is fixedly mounted on the rear end of the rear longitudinal beam, the left pin shaft seat is fixed to the left side of the pin shaft seat fixing sleeve, and the right pin shaft seat is fixed to the right side of the pin shaft seat fixing sleeve.

[0020] Compared with the prior art, the portable water jet propulsion device of the utility model has the following advantages:

[0021] 1. The portable water jet propulsion special lifting device of the utility model can be used with the vehicle and placed in the vehicle tool box before the improvement. After the improvement, the size is smaller and the folding design is convenient to carry, so there is no need to consider the problem of difficulty in carrying;

[0022] 2. The portable water jet propulsion device of the utility model saves the hoisting time, simplifies the hoisting procedure, and greatly improves the hoisting efficiency.

[0023] 3. The portable water jet propulsion lifting device of the utility model solves the problems of difficult and slow lifting of the water jet propulsion device, difficult combination of supporting tooling, many procedures and manpower, and the previous need for five or six people to carry it, and the cumbersome movements. It ensures safety and simplifies the labor intensity of personnel. Using the portable assembled water jet propulsion device of the utility model, one or two people can complete the work, thereby improving work efficiency.

[0024] 4. The portable water jet propulsion special sling of the utility model has simple structure, small size, light weight, convenient operation, and full functions, which ensures low failure rate and easy operation and maintenance.

[0025] In summary, the portable special lifting device for water jet propulsion of the utility model can be disassembled and stored in a tool box at ordinary times. When it is necessary to disassemble and install a heavy water jet propulsion device in a small space in a cabin, the upper lifting ring seat and the clamp can be installed at an appropriate position on the top plate of the cabin and fixed, and then the upper lifting ring seat is connected to the lower lifting ring seat and the front hanging kit by using the lifting ring chain, and the left hanging kit, the right hanging kit, the cross beam, the four-wheel car, the pull ring chain, the middle hanging kit and other components are connected by using the clamp, and then the front hanging kit and the middle hanging kit are used to install the front longitudinal beam, two four-wheel rail cars, two hand hoists and other components, and then the two four-wheel rail cars are moved. The utility model is a portable water jet propulsion device, which is a kind of portable water jet propulsion device, and a four-wheeled vehicle, and the positions of the two hand-operated hoists are adjusted, and then the water jet propulsion device is hoisted into the air by operating the two hand-operated hoists, and then the two four-wheeled rail vehicles and the four-wheeled vehicle are coordinated and moved again, so that the front longitudinal beam is rotated at an angle to align with the doorway where the water jet propulsion device can be moved out, and then the front longitudinal beam and the rear longitudinal beam are connected in series by using the connecting sleeve, and the rear longitudinal beam is extended to the outside of the narrow cabin, and the left oblique support leg and the right oblique support leg are installed at the rear end of the rear longitudinal beam, and the left oblique support leg and the right oblique support leg must be located outside the narrow cabin, and then the two four-wheeled rail vehicles are moved again, and the heavy water jet propulsion device can be moved out of the rear door of the narrow cabin. It is not difficult to understand that the reverse operation can also move the heavy water jet propulsion device to the installation position in the narrow cabin. Therefore, the portable water jet propulsion device of the utility model has the characteristics of being able to quickly disassemble or install the water jet propulsion devices of various special vehicles, greatly improving the maintenance efficiency, reducing the time required for maintenance, reducing the maintenance cost, and reducing the labor intensity of the maintenance personnel.

[0026] The portable water jet propulsion device special lifting device of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a front view of the portable water jet propulsion device of the utility model;

[0028] Figure 2 It is a right side view of the crossbeam part of the special lifting device for portable water jet propulsion of the utility model;

[0029] Figure 3 It is a schematic diagram of the structure of the four-wheel rail vehicle of the portable water jet propulsion special lifting device of the utility model after enlargement;

[0030] Figure 4 It is a schematic diagram of the structure of a four-wheel vehicle of a portable water jet propulsion device after enlargement of the utility model;

[0031] Figure 5 It is a structural schematic diagram of an enlarged pin shaft seat fixing sleeve part of the portable water jet propulsion special lifting device of the utility model;

[0032] Figure 6 It is a structural schematic diagram of an enlarged front hanging kit part of the portable water jet propulsion special hanging device of the utility model;

[0033] Figure 7 It is a structural schematic diagram of an enlarged middle hanging kit part of the portable water jet propulsion special hanging device of the utility model;

[0034] Figure 8 It is a structural schematic diagram of an enlarged connecting sleeve portion of a portable water jet propulsion special lifting device of the utility model. DETAILED DESCRIPTION

[0035] The portable water jet propulsion device of the utility model is specially designed for use as a lifting device. Figure 1 and Figure 2 As shown, it includes a front longitudinal beam 1 and a rear longitudinal beam 10 arranged in series along the front and rear horizontal direction, the front longitudinal beam 1 and the rear longitudinal beam 10 are respectively made of C-shaped steel, and the cross-sectional shapes of the front longitudinal beam 1 and the rear longitudinal beam 10 are similar to Figure 6 , Figure 7 and Figure 8 The cross-sectional shapes are the same as shown, the C-shaped slot openings of the front longitudinal beam 1 are respectively located in the middle of the bottom end of the front longitudinal beam 1, and the C-shaped slot openings of the rear longitudinal beam 10 are located in the middle of the bottom end of the rear longitudinal beam 10. The C-shaped slot openings at the bottom ends of the front longitudinal beam 1 and the rear longitudinal beam 10 are connected to each other so that the vertical plate 25 of the four-wheel track vehicle 16 can pass through. The front end of the front longitudinal beam 1 is set with a front hanging kit 5, see Figure 6The front hanging kit 5 is made of C-shaped steel that can be fitted on the front longitudinal beam 1 through clearance. The C-shaped slot opening of the front hanging kit 5 is located in the middle of the bottom end of the front hanging kit 5. The side wall of the front hanging kit 5 is screwed with a front hanging kit set screw 31, and the inner end of the front hanging kit set screw 31 can be against the side wall of the front longitudinal beam 1. When the front hanging kit 5 needs to be used to fix the front longitudinal beam 1, the front hanging kit set screw 31 on the front hanging kit 5 can be tightened, and the front longitudinal beam 1 will be fixed at this time. After loosening the front hanging kit set screw 31, the front longitudinal beam 1 can be removed from the front hanging kit 5.

[0036] A lower lifting ring seat 6 is provided at the top of the front hanging kit 5, and the lower lifting ring seat 6 is connected to the bottom end of the lifting ring chain 7 by hanging, and the top of the lifting ring chain 7 is connected to the upper lifting ring seat 8 by hanging, and the upper lifting ring seat 8 is fixed to the top plate 15 of the cabin by bolts, and the rear end of the front longitudinal beam 1 is inserted into the front part of the connecting sleeve 9 by clearance fit, and the front connecting sleeve front tightening screw 32 is screwed on the side wall of the front part of the connecting sleeve 9, and the inner end of the front connecting sleeve front tightening screw 32 can be pressed against the side wall of the front longitudinal beam 1; when it is necessary to connect the front longitudinal beam 1 with the connecting sleeve 9, the front connecting sleeve front tightening screw 32 can be tightened, and the front longitudinal beam 1 will be fixed at this time, and after loosening the front connecting sleeve front tightening screw 32, the front longitudinal beam 1 can be removed from the connecting sleeve 9.

[0037] The front end of the rear longitudinal beam 10 is inserted into the rear part of the connecting sleeve 9 by means of clearance fit, see Figure 8 A rear connecting sleeve front tightening screw 33 is screwed on the side wall of the rear part of the connecting sleeve 9, and the inner end of the rear connecting sleeve front tightening screw 33 can be against the side wall of the rear longitudinal beam 10; when the connecting sleeve 9 is needed to connect the rear longitudinal beam 10, the connecting sleeve front tightening screw 32 and the rear connecting sleeve front tightening screw 33 can be tightened, and the front longitudinal beam 1 will be fixed at this time. After loosening the rear connecting sleeve front tightening screw 33, the rear longitudinal beam 10 can be removed from the connecting sleeve 9.

[0038] See also Figure 8 The connecting sleeve 9 is made of C-shaped steel that can be sleeved on the front longitudinal beam 1 and the rear longitudinal beam 10, and the C-shaped groove opening of the connecting sleeve 9 is located in the middle of the bottom end of the connecting sleeve 9;

[0039] See also Figure 1 and Figure 5 A left pin shaft seat 2 is fixed to the left side of the rear end of the rear longitudinal beam 10, and the left pin shaft seat 2 is connected to the top end of the left oblique support leg 4 through a left pin shaft, and the axis of the left pin shaft is located in the front-rear horizontal direction. A right pin shaft seat 12 is fixed to the right side of the rear end of the rear longitudinal beam 10, and the right pin shaft seat 12 is connected to the top end of the right oblique support leg 14 through a right pin shaft, and the axis of the right pin shaft is located in the front-rear horizontal direction;

[0040] Two four-wheel rail cars 16 are provided in the front longitudinal beam 1 and the rear longitudinal beam 10, and the two four-wheel rail cars 16 can move to the front end of the front longitudinal beam 1 or to the rear end of the rear longitudinal beam 10;

[0041] See also Figure 2 and Figure 3 Each of the four-wheel rail vehicles 16 includes a vertical plate 25, and the front and rear ends of the two vertical plates 25 are respectively provided with a wheel shaft 17, and the middle part of each wheel shaft 17 is respectively connected to the corresponding vertical plate 25, and the left and right ends of each wheel shaft 17 are respectively rotatably installed with a running wheel 18, and the bottom end of the circumferential surface of each running wheel 18 is respectively attached to the two sides of the inner bottom end of the front longitudinal beam 1 and / or the rear longitudinal beam 10, and the lower part of the two vertical plates 25 extends downward and extends out of the C-shaped groove opening of the corresponding front longitudinal beam 1 and / or the rear longitudinal beam 10, and the lower part of the two vertical plates 25 is respectively provided with a hanging hole 19, and a hand hoist 20 is respectively hung at each hanging hole 19;

[0042] See also Figure 1 and Figure 7 A middle hanging kit 21 is set in the middle of the front longitudinal beam 1. The middle hanging kit 21 is made of C-shaped steel that can be fitted on the front longitudinal beam 1 through clearance. The C-shaped slot opening of the middle hanging kit 21 is located in the middle of the bottom end of the middle hanging kit 21. The side wall of the middle hanging kit 21 is screwed with a middle hanging kit set screw 34. The inner end of the middle hanging kit set screw 34 can be against the side wall of the front longitudinal beam 1.

[0043] When the middle hanging kit 21 is needed to connect the front longitudinal beam 1 , the middle hanging kit fixing screws 34 can be tightened, and the front longitudinal beam 1 will be fixed at this time. After loosening the middle hanging kit fixing screws 34 , the front longitudinal beam 1 can be removed from the middle hanging kit 21 .

[0044] A middle hanging seat 22 is provided at the top of the middle hanging kit 21, and the middle hanging seat 22 is connected to the bottom end of the pull ring chain 23. A crossbeam 24 is provided above the pull ring chain 23 along the left and right horizontal directions. The crossbeam 24 is made of C-shaped steel, and the C-shaped groove opening of the crossbeam 24 is located in the middle of the bottom end of the crossbeam 24. A four-wheeled vehicle 26 is provided in the crossbeam 24, and the four-wheeled vehicle 26 can move to both ends of the crossbeam 24;

[0045] See also Figure 1 and Figure 4The four-wheel vehicle 26 includes a straight plate 30, and wheel axles 27 are respectively provided at the left and right ends of the straight plate 30. The middle part of each wheel axle 27 is respectively connected to the straight plate 30, and the left and right ends of each wheel axle 27 are respectively rotatably installed with a rotating wheel 28. The bottom end of the circumferential surface of each rotating wheel 28 is respectively attached to the two sides of the inner bottom end of the cross beam 24. The lower part of the straight plate 30 extends downward and extends out of the C-shaped groove opening of the cross beam 24. The lower part of the straight plate 30 is provided with a hanging hole 29, and the top end of the pull ring chain 23 is connected to the hanging hole 29.

[0046] See also Figure 2 A left hanging kit 35 is fixed to the left end of the crossbeam 24. The left hanging kit 35 is made of C-shaped steel that can be fitted on the crossbeam 24 through clearance. The C-shaped groove opening of the left hanging kit 35 is located in the middle of the bottom end of the left hanging kit 35. A left hanging kit fixing screw 36 is screwed on the side wall of the left hanging kit 35. The inner end of the left hanging kit fixing screw 36 can be against the side wall of the crossbeam 24. When the left hanging kit 35 is needed to connect the crossbeam 24, the left hanging kit fixing screw 36 can be tightened, and the crossbeam 24 will be fixed at this time. After loosening the left hanging kit fixing screw 36, the crossbeam 24 can be removed from the left hanging kit 35.

[0047] A right hanging kit 37 is fixed to the right end of the crossbeam 24. The right hanging kit 37 is made of C-shaped steel that can be mounted on the crossbeam 24. The C-shaped slot opening of the right hanging kit 37 is located in the middle of the bottom end of the right hanging kit 37. A right hanging kit fixing screw 38 is screwed on the side wall of the right hanging kit 37. The inner end of the right hanging kit fixing screw 38 can be against the side wall of the crossbeam 24. When the right hanging kit 37 is needed to connect the crossbeam 24, the right hanging kit fixing screw 38 can be tightened, and the crossbeam 24 will be fixed at this time. After loosening the right hanging kit fixing screw 38, the crossbeam 24 can be removed from the right hanging kit 37.

[0048] A left suspension seat 40 is disposed at the top of the left suspension kit 35 , and a right suspension seat 41 is disposed at the top of the right suspension kit 37 . The left suspension seat 40 and the right suspension seat 41 are fixedly connected to the top plate 15 of the cabin via a clamp 46 that can be quickly disassembled.

[0049] The portable special lifting device for water jet propulsion of the utility model can be disassembled and stored in a tool box at ordinary times. When it is necessary to disassemble and install the heavy water jet propulsion device 50 in a small space in the cabin, the upper lifting ring seat 8 and the clamp 46 can be installed at the appropriate position of the top plate 15 of the cabin and fixed, and then the upper lifting ring seat 8 is connected with the lower lifting ring seat 6 and the front hanging kit 5 by using the lifting ring chain 7, and the clamp 46 is used to connect the left hanging kit 35, the right hanging kit 37, the crossbeam 24, a four-wheeled vehicle 26 provided in the crossbeam 24, the pull ring chain 23, the middle hanging kit 21 and other components, and then the front hanging kit 5 and the middle hanging kit 21 are used to install the front longitudinal beam 1, the two four-wheeled rail vehicles 16, the two hand-operated hoists 20 and other components, but the rear longitudinal beam 10 should not be installed first, and then the positions of the two hand-operated hoists 20 are adjusted by moving the two four-wheeled rail vehicles 16 and the four-wheeled vehicle 26. The purpose of moving the four-wheeled vehicle 26 is to allow the front longitudinal beam 1 to deviate from the front and rear horizontal directions, and then the two hand-operated hoists 20 can be moved above the two lifting rings 51 of the water jet propulsion device 50, and then the water jet propulsion device 50 is lifted into the air by operating the two hand-operated hoists 20, and then the two four-wheeled rail vehicles 16 and a four-wheeled vehicle 26 are coordinated to move again, so that the front longitudinal beam 1 is rotated at an angle to align with the doorway where the water jet propulsion device 50 can be moved out, and after the adjustment is in place, the front longitudinal beam 1 and the rear longitudinal beam 10 are connected in series by the connecting sleeve 9, and the rear longitudinal beam 10 is extended to the outside of the narrow cabin, and the left oblique support leg 4 and the right oblique support leg 14 are installed at the rear end of the rear longitudinal beam 10, and the left oblique support leg 4 and the right oblique support leg 14 must be located outside the narrow cabin, and then the two four-wheeled rail vehicles 16 are moved again, and the heavy water jet propulsion device 50 can be moved out from the rear door of the narrow cabin. It is easy to understand that the reverse operation can also move the heavy water jet propeller 50 to the installation position in the narrow cabin. Therefore, the portable water jet propeller special lifting device of the utility model has the characteristics of being able to quickly disassemble or install the water jet propeller of various special vehicles, greatly improving the maintenance efficiency, reducing the time required for maintenance, reducing the maintenance cost, and reducing the labor intensity of maintenance personnel.

[0050] As a further improvement of the present invention, a front limiting cover plate 42 is fixed to the front end of the front longitudinal beam 1 , and a rear limiting cover plate 43 is fixed to the rear end of the rear longitudinal beam 10 .

[0051] As a further improvement of the present invention, a left limit cover plate 44 is fixed to the left end of the cross beam 24 , and a right limit cover plate 45 is fixed to the right end of the cross beam 24 .

[0052] As a further improvement of the present invention, a pin shaft seat fixing sleeve 3 is fixed to the rear end of the above-mentioned rear longitudinal beam 10, the left pin shaft seat 2 is fixed to the left side of the pin shaft seat fixing sleeve 3, and the right pin shaft seat 12 is fixed to the right side of the pin shaft seat fixing sleeve 3.

[0053] Compared with the prior art, the portable water jet propulsion device of the utility model has the following advantages:

[0054] 1. The portable water jet propulsion special lifting device of the utility model can be used with the vehicle and placed in the vehicle tool box before the improvement. After the improvement, the size is smaller and the folding design is convenient to carry, so there is no need to consider the problem of difficulty in carrying;

[0055] 2. The portable water jet propulsion device of the utility model saves the hoisting time, simplifies the hoisting procedure, and greatly improves the hoisting efficiency.

[0056] 3. The portable water jet propulsion lifting device of the utility model solves the problems of difficult and slow lifting of the water jet propulsion device, difficult combination of supporting tooling, many procedures and manpower, and the previous need for five or six people to carry it, and the cumbersome movements. It ensures safety and simplifies the labor intensity of personnel. Using the portable assembled water jet propulsion device of the utility model, one or two people can complete the work, thereby improving work efficiency.

[0057] 4. The portable water jet propulsion special sling of the utility model has simple structure, small size, light weight, convenient operation, and full functions, which ensures low failure rate and easy operation and maintenance.

[0058] Therefore, the portable water jet propulsion special lifting device of the utility model has the characteristics of being able to quickly dismantle or install the water jet propulsion devices of various special vehicles, greatly improving the maintenance efficiency, reducing the time required for maintenance, reducing the maintenance cost, and at the same time reducing the labor intensity of maintenance personnel.

Claims

1. A portable water jet propulsion lifting device, characterized by: The invention comprises a front longitudinal beam (1) and a rear longitudinal beam (10) which are arranged in series along the front-to-back horizontal direction. The front longitudinal beam (1) and the rear longitudinal beam (10) are respectively made of C-shaped steel. The C-shaped slot opening of the front longitudinal beam (1) is respectively located at the middle of the bottom end of the front longitudinal beam (1). The C-shaped slot opening of the rear longitudinal beam (10) is located at the middle of the bottom end of the rear longitudinal beam (10). A front hanging kit (5) is set at the front end of the front longitudinal beam (1). The front hanging kit (5) is made of C-shaped steel that can be mounted on the front longitudinal beam (1). The C-shaped slot opening of the front hanging kit (5) is located at the middle of the bottom end of the front hanging kit (5). A front hanging kit fixing screw is screwed onto the side wall of the front hanging kit (5). nail (31), the inner end of the front hanging kit set screw (31) can be pressed against the side wall of the front longitudinal beam (1), the top of the front hanging kit (5) is provided with a lower lifting ring seat (6), the lower lifting ring seat (6) is connected to the bottom end of the lifting ring chain (7), the top of the lifting ring chain (7) is connected to the upper lifting ring seat (8), the upper lifting ring seat (8) is fixed to the top plate (15) of the cabin by bolts, the rear end of the front longitudinal beam (1) is inserted into the front part of the connecting sleeve (9), the front connecting sleeve front set screw (32) is screwed on the side wall of the front part of the connecting sleeve (9), and the inner end of the connecting sleeve front set screw (32) can be pressed against the side wall of the front longitudinal beam (1); The front end of the rear longitudinal beam (10) is inserted into the rear part of the connecting sleeve (9), and a rear connecting sleeve front set screw (33) is screwed onto the side wall of the rear part of the connecting sleeve (9), and the inner end of the rear connecting sleeve front set screw (33) can be pressed against the side wall of the rear longitudinal beam (10); A left pin shaft seat (2) is fixed to the left side of the rear end of the rear longitudinal beam (10), and the left pin shaft seat (2) is connected to the top end of the left oblique support leg (4) through a left pin shaft, and the axis of the left pin shaft is located in the front-rear horizontal direction; a right pin shaft seat (12) is fixed to the right side of the rear end of the rear longitudinal beam (10), and the right pin shaft seat (12) is connected to the top end of the right oblique support leg (14) through a right pin shaft, and the axis of the right pin shaft is located in the front-rear horizontal direction; Two four-wheel rail vehicles (16) are arranged inside the front longitudinal beam (1) and the rear longitudinal beam (10), and the two four-wheel rail vehicles (16) can move to the front end of the front longitudinal beam (1) or to the rear end of the rear longitudinal beam (10); Each of the four-wheel rail vehicles (16) comprises a vertical plate (25), and a rotating wheel shaft (17) is respectively provided at the front and rear ends of the two vertical plates (25), and the middle part of each rotating wheel shaft (17) is respectively connected to the corresponding vertical plate (25), and the left and right ends of each rotating wheel shaft (17) are respectively rotatably provided with a running wheel (18), and the bottom end of the circumferential surface of each running wheel (18) is respectively attached to the two sides of the inner bottom end of the front longitudinal beam (1) and / or the rear longitudinal beam (10), and the lower part of the two vertical plates (25) extends downward and extends out of the C-shaped groove opening of the corresponding front longitudinal beam (1) and / or the rear longitudinal beam (10), and the lower part of the two vertical plates (25) is respectively provided with a hanging hole (19), and a hand-operated hoist (20) is respectively hung at each hanging hole (19); A middle hanging kit (21) is set in the middle of the front longitudinal beam (1). The middle hanging kit (21) is made of C-shaped steel that can be mounted on the front longitudinal beam (1). The C-shaped slot opening of the middle hanging kit (21) is located in the middle of the bottom end of the middle hanging kit (21). The side wall of the middle hanging kit (21) is screwed with a middle hanging kit fixing screw (34). The inner end of the middle hanging kit fixing screw (34) can be pressed against the side wall of the front longitudinal beam (1). A middle hanging seat (22) is provided at the top of the kit (21), and the middle hanging seat (22) is connected to the bottom end of the pull ring chain (23). A crossbeam (24) is provided above the pull ring chain (23) along the left and right horizontal directions. The crossbeam (24) is made of C-shaped steel, and the C-shaped groove opening of the crossbeam (24) is located at the middle part of the bottom end of the crossbeam (24). A four-wheeled vehicle (26) is provided in the crossbeam (24), and the four-wheeled vehicle (26) can move to both ends of the crossbeam (24); The four-wheel vehicle (26) comprises a straight plate (30), the left and right ends of the straight plate (30) are respectively provided with wheel axles (27), the middle part of each wheel axle (27) is respectively connected to the straight plate (30), the left and right ends of each wheel axle (27) are respectively rotatably provided with rotating wheels (28), the bottom end of the circumferential surface of each rotating wheel (28) is respectively attached to the two sides of the inner bottom end of the cross beam (24), the lower part of the straight plate (30) extends downward and protrudes out of the C-shaped groove opening of the cross beam (24), the lower part of the straight plate (30) is provided with a hanging hole (29), and the top end of the pull ring chain (23) is connected to the hanging hole (29) by hanging; A left hanging kit (35) is fixed to the left end of the cross beam (24), and the left hanging kit (35) is made of C-shaped steel that can be mounted on the cross beam (24). The C-shaped slot opening of the left hanging kit (35) is located in the middle of the bottom end of the left hanging kit (35). A left hanging kit fixing screw (36) is screwed onto the side wall of the left hanging kit (35), and the inner end of the left hanging kit fixing screw (36) can be pressed against the side wall of the cross beam (24); A right hanging kit (37) is fixed to the right end of the cross beam (24), and the right hanging kit (37) is made of C-shaped steel that can be mounted on the cross beam (24). The C-shaped slot opening of the right hanging kit (37) is located in the middle of the bottom end of the right hanging kit (37). A right hanging kit fixing screw (38) is screwed onto the side wall of the right hanging kit (37), and the inner end of the right hanging kit fixing screw (38) can be against the side wall of the cross beam (24); A left hanging seat (40) is provided at the top end of the left hanging kit (35), and a right hanging seat (41) is provided at the top end of the right hanging kit (37). The left hanging seat (40) and the right hanging seat (41) are fixedly connected to the top plate (15) of the cabin via a clamp (46) that can be quickly disassembled.

2. The portable water jet propulsion lifting device according to claim 1 is characterized in that: A front limiting cover plate (42) is fixed to the front end of the front longitudinal beam (1), and a rear limiting cover plate (43) is fixed to the rear end of the rear longitudinal beam (10).

3. The portable water jet propulsion lifting device according to claim 2 is characterized in that: A left limit cover plate (44) is fixed to the left end of the cross beam (24), and a right limit cover plate (45) is fixed to the right end of the cross beam (24).

4. The portable water jet propulsion lifting device according to claim 3 is characterized in that: A pin shaft seat fixing sleeve (3) is fixedly mounted on the rear end of the rear longitudinal beam (10), the left pin shaft seat (2) is fixed on the left side of the pin shaft seat fixing sleeve (3), and the right pin shaft seat (12) is fixed on the right side of the pin shaft seat fixing sleeve (3).

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