CN115258999A

CN115258999A - Electric horizontal hydraulic jack

Info

Publication number: CN115258999A
Application number: CN202210834876.0A
Authority: CN
Inventors: 何宇锋; 徐继峰; 何渭祥
Original assignee: Zhejiang Yipin Technology Co ltd
Current assignee: Zhejiang Yipin Technology Co ltd
Priority date: 2022-07-16
Filing date: 2022-07-16
Publication date: 2022-11-01
Anticipated expiration: 2042-07-16
Also published as: CN115258999B

Abstract

The invention discloses an electric horizontal hydraulic jack which is characterized by further comprising variable plunger structures arranged on a motor base and a jack base; the variable plunger structure comprises a piston hole, a plunger sleeve, a plunger, a piston, a valve core, a spring and an eccentric wheel, wherein the piston hole is formed in a jack base and is communicated with an oil cavity and an oil inlet path, the plunger sleeve is installed at the port of the piston hole, the plunger is installed in the plunger sleeve in a sliding mode, the piston is installed in the piston hole in a concave shape in a sliding mode, the valve core is installed on the piston in a sliding mode, the spring is installed in the piston hole and sleeved on the valve core, and the eccentric wheel is installed on an output shaft of the speed reducer. According to the invention, through the arrangement of the variable plunger piston structure, the plunger piston is driven to continuously perform reciprocating linear movement, so that the oil way is continuously opened and closed, when the pressure in the cylinder body is continuously increased, resistance is formed on the opening of the one-way valve through the continuously increased pressure, so that the size of the flow path of the one-way valve is changed along with the change of the pressure in the cylinder body, and the purposes of high jacking speed in no load and normal jacking under a high-pressure condition in heavy load are achieved.

Description

Electric horizontal hydraulic jack

Technical Field

The invention relates to the field of jacks, in particular to an electric horizontal hydraulic jack.

Background

The jack is light and small hoisting equipment which takes a rigid jacking piece as a working device and jacks a heavy object in a small stroke through a top bracket or a bottom supporting claw, is mainly used for the departments of factory and mining, transportation and the like as vehicle repair and other hoisting, supporting and the like, has a light and firm structure, is flexible and reliable, and can be carried and operated by one person.

The traditional hydraulic jack generally comprises three driving modes, namely manual driving, pneumatic driving and electric driving, a corresponding manual pump or pneumatic driving is arranged on the hydraulic jack according to the driving modes, manual operation is carried out by means of manpower, the labor intensity is high, and the jack lifting speed is low;

the pneumatic pump works by depending on high-pressure gas, so that the labor intensity is low, the lifting speed is high, but the work is influenced by compressed air, the pneumatic pump works by depending on high-pressure gas, the labor intensity is low, the lifting speed is high, but the work is influenced by compressed air equipment, and the application range is not wide;

the electric pump is used by depending on electric power, and the oil supply amount of a manual pump or the electric pump on a common jack is constant when the electric pump is used, so that the jacking speed of the piston is uniform no matter the jack is unloaded or heavily loaded, and the jacking speed of the jack is set to be slow in order to maintain the stability of the jack, thereby causing the jacking speed to be too slow when the jack is unloaded;

the electric jack accelerates the jacking speed and then leads to the power of the full stroke of piston jacking all very big, leads to the electroplax to need charge for a long time, and power is very big, and is comparatively troublesome and the motor burns out easily, and life is low.

Traditional hydraulic pressure is in order to improve the jacking speed of jack when unloaded, manual then need be equipped with two or more manual pump bodies, the pump core structure switches to use, when unloaded or pressure is low, adopt the pump body of big discharge capacity, the pump core structure, when pressure is high, then adopt the pump body of little discharge capacity, the pump core structure, consequently, can make the jacking speed of jack when unloaded fast, jacking speed when the heavy load is slower, guarantee stably, but this kind of mode all need be equipped with two or more pump bodies on every jack, the pump core structure, it is comparatively troublesome that the switching etc. need be carried out during the operation, and with high costs, and is large, and can't reduce intensity of labour. Therefore, an electric horizontal hydraulic jack is provided.

Disclosure of Invention

The invention aims to solve the problems and provides an electric horizontal hydraulic jack.

In order to achieve the purpose, the invention provides the following technical scheme that the electric horizontal hydraulic jack comprises a rack, an oil pump assembly, a wall plate assembly, a lifting arm assembly and a wheel, wherein the oil pump assembly is installed on the rack; the oil pump assembly comprises an oil pump base, a shell, a cylinder body, a piston rod, a motor base, a speed reducer, a motor and a power supply, wherein the shell is installed on the oil pump base; an oil cavity is formed between the shell and the cylinder body, an oil inlet path and an oil return path which are communicated with the cylinder body are arranged on the oil pump base, and an oil drain valve is arranged on the oil return path; the frame is also provided with a handle, the handle is provided with a switch for controlling the starting and stopping of the motor and an oil drain valve handle, and an oil drain valve pull wire is connected between the oil drain valve handle and the oil drain valve; the variable plunger structure is characterized by also comprising variable plunger structures arranged on the motor base and the oil pump base; the variable plunger structure comprises a piston hole, a plunger sleeve, a plunger, a valve core, a spring and an eccentric wheel, wherein the piston hole is formed in an oil pump base and is communicated with an oil cavity and an oil inlet path, the plunger sleeve is installed at the port of the piston hole, the plunger is installed in the plunger sleeve in a sliding mode, the piston is installed in the piston hole in a concave shape in a sliding mode, the valve core is installed on the piston in a sliding mode, the spring is installed in the piston hole and sleeved on the valve core, and the eccentric wheel is installed on an output shaft of the speed reducer.

Preferably, the valve core is provided with a sealing platform, the sealing platform is provided with a bulge, the piston is provided with a through hole matched with the bulge, and the piston is further provided with a plurality of oil through holes.

Further preferably, the length of the protrusion is longer than the depth of the through hole.

Further preferably, a check valve is further arranged on the oil inlet path.

Further preferably, a filter screen is arranged between the spring and the bottom of the piston hole.

Further preferably, the power supply is a storage battery or a plug connected with a power socket, and the plug is connected with the motor through a circuit.

Preferably, the rack is further provided with a handle, the handle is provided with a switch for controlling the starting and stopping of the motor and an oil drain valve handle for controlling the opening and closing of the oil drain valve, and an oil drain valve pull wire is connected between the oil drain valve handle and the oil drain valve; the oil drain valve comprises a guide sleeve arranged on an oil return path on the oil pump base, an oil drain valve core which is slidably arranged on the guide sleeve and connected with an oil drain valve pull wire, a pull wire seat arranged on the oil pump base and an oil drain spring which is arranged in the oil return path and is positioned between the oil drain valve core and the guide sleeve.

The invention adopts an electric driving mode, and the power supply is divided into a storage battery and a wire plug, so that the power supply can be replaced according to the application environment for use, and the normal work can be carried out by the power supply of the storage battery under the conditions of no power supply and no air source;

through the arrangement of the variable plunger structure, the speed reducer is driven through the motor, the speed reducer drives the eccentric wheel, the plunger is intermittently pushed through the eccentric wheel, the plunger is continuously driven to perform reciprocating linear movement by matching with the reset force of the spring, so that an oil way is continuously opened and closed, impact is continuously formed on the one-way valve in a shock wave mode, oil is pumped into the cylinder body to push the piston rod to perform jacking work, meanwhile, the pressure in the cylinder body is continuously increased, resistance is formed by opening the one-way valve through the continuously increased pressure, the size of a flow path of the one-way valve is changed along with the change of the pressure in the cylinder body, so that the flow of hydraulic oil is automatically adjusted by the variable plunger structure and the one-way valve according to the size of the pressure, the jack is high in jacking speed when the jack is used, the jack can be normally lifted under the condition of high pressure when the heavy load is used, the whole variable plunger structure is simple in structure, small in size and low in cost, and the no-load design is adopted, so that the labor intensity is reduced;

by installing the filter screen between the spring and the bottom of the piston hole, the oil entering the piston hole and the oil in the cylinder body from the oil cavity is filtered by the filter screen.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of another perspective structure of the present invention;

FIG. 3 is a schematic structural view of an oil pump assembly according to the present invention;

FIG. 4 is an enlarged partial schematic view of the invention at A of FIG. 3;

FIG. 5 is a schematic view of the oil pump assembly in another view in partial cross-section according to the present invention;

fig. 6 is a schematic cross-sectional view of another perspective of the oil pump assembly of the present invention.

Illustration of the drawings: 101. a frame; 102. an oil pump assembly; 103. a wall panel assembly; 104. an arm raising assembly; 105. a wheel; 106. a handle; 107. a switch; 108. a fuel drain valve handle; 109. a pull wire of the oil drain valve; 1. an oil pump base; 11. an oil inlet path; 12. an oil return path; 13. an oil drain valve; 14. a guide sleeve; 15. an oil drain valve core; 16. a wire pulling seat; 17. an oil discharge spring; 2. a housing; 21. an oil chamber; 3. a cylinder body; 4. a piston rod; 5. a motor base; 51. a speed reducer; 52. a motor; 6. a variable plunger structure; 61. a piston bore; 62. a plunger sleeve; 63. a plunger; 64. a piston; 641. a through hole; 642. an oil through hole; 65. a valve core; 66. a spring; 67. an eccentric wheel; 68. a sealing table; 69. a protrusion; 7. a one-way valve; 8. and (5) filtering the screen.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

Referring to fig. 1 to 6, an electric horizontal hydraulic jack includes a frame 101, an oil pump assembly 102 mounted on the frame 101, a wall plate assembly 103, a boom assembly 104 mounted on the frame 101 and connected to the oil pump assembly 102, and wheels 105 mounted on the frame 101; the oil pump assembly 102 comprises an oil pump base 1, a shell 2 arranged on the oil pump base 1, a cylinder body 3, a piston rod 4 which is slidably arranged in the cylinder body 3 and one end of which is connected with the arm lifting assembly, a motor base 5 arranged on the oil pump base 1, a speed reducer 51 arranged on the motor base 5, a motor 52 connected with the speed reducer 51 and a power supply for supplying power to the motor 52; an oil cavity 21 is formed between the shell 2 and the cylinder body 3, an oil inlet path 11 and an oil return path 12 which are communicated with the cylinder body 3 are arranged on the oil pump base 1, and an oil drain valve 13 is arranged on the oil return path 12; a handle 106 is further installed on the frame 101, a switch 107 and an oil drain valve handle 108 for controlling the start and stop of the motor 52 are installed on the handle 106, and an oil drain valve pull wire 109 is connected between the oil drain valve handle 108 and the oil drain valve 13; the variable plunger structure is characterized by also comprising variable plunger structures 6 arranged on the motor base 5 and the oil pump base 1; the variable plunger structure 6 comprises a piston hole 61 which is arranged on the oil pump base 1 and is communicated with the oil cavity 21 and the oil inlet path 11, a plunger sleeve 62 which is arranged at the port of the piston hole 61, a plunger 63 which is slidably arranged in the plunger sleeve 62, a piston 64 which is slidably arranged in the piston hole 61 and is arranged in a concave shape, a valve core 65 which is slidably arranged on the piston 64, a spring 66 which is arranged in the piston hole 61 and is sleeved on the valve core 65, and an eccentric wheel 67 which is arranged on an output shaft of the speed reducer 51; through the setting of variable plunger structure 6, drive speed reducer 51 through motor 52, speed reducer 51 drives eccentric wheel 67, through the interrupted promotion of eccentric wheel 67 to plunger 63, the power that resets of cooperation spring, it is continuous to order about plunger 63 and carry out reciprocal linear motion, thereby continuous opening and closing the oil circuit, and form the impact to check valve 7 constantly with the mode of shock wave and squeeze into the interior promotion piston rod 4 of cylinder body 3 with oil and carry out jacking work, simultaneously in the continuous increase of cylinder body 3 internal pressure, form the resistance through the opening of continuous pressure to check valve 7, thereby make the size of check valve 7 flow path change along with the change of cylinder body 3 internal pressure, thereby make variable plunger structure and check valve according to the flow of the big or small automatic adjustment hydraulic oil of pressure, it is fast to realize the jack jacking when no-load, can normally lift under the high-pressure condition when the heavy load, and variable plunger structure 6 overall structure is simple, small, low cost, adopt the electrodynamic design, reduce intensity of labour.

Further, a sealing table 68 is arranged on the valve core 65, a protrusion 69 is arranged on the sealing table 68, a through hole 641 matched with the protrusion 69 is arranged on the piston 64, and a plurality of oil through holes 642 are also arranged on the piston 64; the length of the protrusion 69 is longer than the depth of the through hole 641; through the arrangement of the sealing platform 68, when the sealing platform 68 is attached to the bottom surface of the piston 64, the oil paths of the piston hole 61 and the oil through hole 642 are cut off through the sealing platform 68, and when the sealing platform 68 is separated from the bottom surface of the piston 64, the oil paths of the piston hole 61 and the oil through hole 642 are opened; through the arrangement of the bulge 69, the length of the bulge 69 is longer than the depth of the through hole, the bulge 69 is pushed through the movement of the plunger 63, so that the sealing table 68 is separated from the bottom surface of the piston 64, when the plunger 63 does not push the bulge 69 any more, the valve core 65 is pushed through the resetting force of the spring 66, the valve core 65 drives the bulge 69, the bulge 69 pushes the plunger 63 to reset, and meanwhile, the sealing table 68 is attached to the bottom surface of the piston 64.

Further, a check valve 7 is arranged on the oil inlet 11; through the setting of check valve 7, through variable plunger structure 6 with the oil in the oil pocket 21 impact check valve 7 with the form of shock wave to open the oil inlet circuit, along with the pressure increase in the cylinder body 3, along with bigger effort to check valve 7, thereby lead to the oil circuit that pushes away check valve 7 when driving into oil through variable plunger structure 6 each time and reduce gradually along with the increase of pressure, the oil circuit reduces and is also equivalent to the oil mass that drives into at every time and reduces gradually, thereby reaches the variable fuel feeding.

Further, a filter screen 8 is arranged between the spring 66 and the bottom of the piston hole 61; by installing the strainer 8 between the spring 66 and the bottom of the piston hole 61, the oil entering the piston hole 61 and the cylinder 3 from the oil chamber 21 is filtered by the strainer 8.

Further, the power supply is a storage battery or a plug connected with a power socket, and the plug is connected with the motor through a circuit; when the electric vehicle is used, the storage battery can be used for supplying power to the motor, or the motor is directly connected with a power socket through a plug for supplying power.

Further, a handle 106 is further installed on the frame 101, a switch 107 for controlling the start and stop of the motor 52 and an oil drain valve handle 108 for controlling the on and off of the oil drain valve 13 are installed on the handle 106, and an oil drain valve pull wire 109 is connected between the oil drain valve handle 108 and the oil drain valve 13; the oil drain valve 108 comprises a guide sleeve 14 mounted on the oil return path 12 of the oil pump base 1 through a screw, an oil drain valve core 15 slidably mounted on the guide sleeve 14 and connected with an oil drain valve pull wire 109, a pull wire seat 16 mounted on the guide sleeve 14, and an oil drain spring 17 mounted in the oil return path 12 and located between the oil drain valve core 15 and the guide sleeve 14.

The use process of the invention is as follows: firstly, a jack is pushed by a handle 106 to move to a position needing to be used, then a motor 52 is electrified, a storage battery provided with a storage battery supplies power, a plug-equipped plug is connected with a power socket for supplying power, then an operator turns a switch 107 to start the motor 52, the motor 52 drives a speed reducer 51 to start, the speed reducer 51 drives an output shaft to rotate, the output shaft drives an eccentric wheel 67 to rotate, the eccentric wheel 67 rotates and forms forward pushing on a plunger 63 by contacting with the plunger 63, the plunger 63 firstly pushes a bulge 69, the bulge 69 drives a valve core 65 to move forward, an oil path between a piston hole 61 and a plunger 63 is opened, the plunger 63 contacts with the piston 64 and forms thrust on the piston 64 in the continuous forward movement process, the oil path between the oil hole 642 and an oil inlet path is opened after the thrust is applied to the piston 64, oil in an oil cavity 21 enters the piston hole 61 between the piston 64 and the plunger 63 through the oil inlet 642, the eccentric wheel 67 rotates, when the thrust is no longer applied to the plunger 63, the reset force of the plunger 66 drives the valve core 65, the piston 64 and the piston 63 to reset, a flow path is cut off, the valve 64 is firstly, the plunger 65 and the piston 64 is cut off, the piston assembly, the piston is attached to open, the piston rod is further pushed by the one-way of the piston 66, the piston rod 7 and the piston is extruded after the piston rod 7 is pushed, the piston rod assembly 7, and the piston is pushed, and the piston rod assembly 4, and the piston 63, and the piston rod assembly 4; when the eccentric wheel 67 again forms thrust on the plunger 63 in the rotating process, the flow path is opened again, and the plunger 63 is driven to reciprocate by the rotation of the eccentric wheel 67 and the restoring force of the spring 66, so that the flow path is continuously opened and closed to perform circulating action; when the cylinder body 3 is unloaded, the pressure in the cylinder body 3 is small, when oil forms thrust to the check valve 7, an opened flow path is large, and more oil is injected into the cylinder body 3, so that the jacking speed of the piston rod 4 is high, along with the increasing pressure in the cylinder body 3, the flow path opened when the oil forms thrust to the check valve 7 is gradually reduced, so that the jacking speed of the piston rod 4 is reduced, when the force pushing the piston 64 through the reset force of the spring 66 cannot open the check valve 7, when the eccentric wheel 67 forms thrust to the plunger 63 again along with rotation, the plunger 63 extrudes the oil between the piston 64 and the plunger 63, so that the flow path of the check valve 7 is opened, so that oil supply is realized during heavy load, the jacking is stable during bearing or heavy load, the jacking speed is high during the jacking, the idle time is saved, and the efficiency is improved; after the lifting is in place, the switch 107 is toggled again, the motor 52 is turned off, and the lifting arm assembly 104 is stopped; after the use, an operator dials the oil drain valve handle 108 on the handle 106, the oil drain valve handle 108 pulls the oil drain valve core 15 through the oil drain valve pull wire 109, the oil path of the oil return path 12 is opened, and the arm lifting assembly 104 and the piston rod 4 perform the resetting action.

The scope of protection of the invention is not limited to the above embodiments and variations thereof. Conventional modifications and substitutions by those skilled in the art based on the contents of the present embodiment are within the scope of the present invention.

Claims

1. An electric horizontal hydraulic jack comprises a frame (101), an oil pump assembly (102) arranged on the frame (101), a wall plate assembly (103), a lifting arm assembly (104) arranged on the frame (101) and connected with the oil pump assembly (102), and wheels (105) arranged on the frame (101); the oil pump assembly (102) comprises an oil pump base (1), a shell (2) arranged on the oil pump base (1), a cylinder body (3), a piston rod (4) which is slidably arranged in the cylinder body (3) and one end of which is connected with the arm lifting assembly, a motor base (5) arranged on the oil pump base (1), a speed reducer (51) arranged on the motor base (5), a motor (52) connected with the speed reducer (51) and a power supply for supplying power to the motor (52); an oil cavity (21) is formed between the shell (2) and the cylinder body (3), an oil inlet path (11) and an oil return path (12) which are communicated with the cylinder body (3) are arranged on the oil pump base (1), and an oil drain valve (13) is arranged on the oil return path (12); a handle (106) is further installed on the rack (101), a switch (107) for controlling the starting and stopping of the motor (52) and an oil drain valve handle (108) are installed on the handle (106), and an oil drain valve pull wire (109) is connected between the oil drain valve handle (108) and the oil drain valve (13); the variable plunger structure is characterized by also comprising variable plunger structures (6) arranged on the motor base (5) and the oil pump base (1); the variable plunger structure (6) comprises a piston hole (61) which is formed in an oil pump base (1) and communicated with an oil cavity (21) and an oil inlet channel (11), a plunger sleeve (62) installed at the port of the piston hole (61), a plunger (63) which is installed in the plunger sleeve (62) in a sliding mode, a piston (64) which is installed in the piston hole (61) in a sliding mode and is arranged in a concave mode, a valve core (65) which is installed on the piston (64) in a sliding mode, a spring (66) which is installed in the piston hole (61) and sleeved on the valve core (65) and an eccentric wheel (67) installed on an output shaft of a speed reducer (51).

2. The electric horizontal hydraulic jack according to claim 1, wherein: the valve core (65) is provided with a sealing platform (68), the sealing platform (68) is provided with a bulge (69), the piston (64) is provided with a through hole (641) matched with the bulge (69), and the piston (64) is further provided with a plurality of oil through holes (642).

3. The electric horizontal hydraulic jack according to claim 2, wherein: the length of the protrusion (69) is longer than the depth of the through hole (641).

4. The electric horizontal hydraulic jack according to claim 1, wherein: and the oil inlet path (11) is also provided with a one-way valve (7).

5. The electric horizontal hydraulic jack according to claim 1, wherein: and a filter screen (8) is arranged between the spring (66) and the bottom of the piston hole (61).

6. The electric horizontal hydraulic jack according to claim 1, wherein: the power supply is a storage battery or a plug connected with a power socket, and the plug is connected with the motor (52) through a circuit.

7. The electric horizontal hydraulic jack according to claim 1, wherein: a handle (106) is further installed on the rack (101), a switch (107) for controlling the starting and stopping of the motor (52) and an oil drain valve handle (108) for controlling the opening and closing of the oil drain valve (13) are installed on the handle (106), and an oil drain valve pull wire (109) is connected between the oil drain valve handle (108) and the oil drain valve (13); the oil drain valve (108) comprises a guide sleeve (14) arranged on the oil return path (12) of the oil pump base (1), an oil drain valve core (15) which is slidably arranged on the guide sleeve (14) and connected with an oil drain valve stay wire (109), a stay wire base (16) arranged on the oil pump base (1) and an oil drain spring (17) which is arranged in the oil return path (12) and is positioned between the oil drain valve core (15) and the guide sleeve (14).