CN217466124U

CN217466124U - Electric steering gear assembly air tightness detection device

Info

Publication number: CN217466124U
Application number: CN202221328805.5U
Authority: CN
Inventors: 曾丹
Original assignee: Hubei Henglong Kaiwanbi Electric Steering System Co ltd
Current assignee: Hubei Henglong Kaiwanbi Electric Steering System Co ltd
Priority date: 2022-05-31
Filing date: 2022-05-31
Publication date: 2022-09-20
Anticipated expiration: 2032-05-31

Abstract

The utility model relates to an electric steering gear assembly gas tightness detection device belongs to the auto steering system technical field. The gas storage cylinder is communicated with the lifting mechanism and the gas transmission connecting sealing piece respectively through a manual pneumatic control valve. Injecting water into the box body, installing the air delivery head and the plug at two ends of the steering gear assembly, inflating the steering gear assembly, and observing the position of bubbles generated by the steering gear assembly in water, thereby finding out the problem parts or assembly joints causing the air tightness of the steering gear assembly to be unqualified; the problem of current gas tightness detecting instrument can not effectively discern the concrete position that causes the steering gear assembly gas tightness unqualified, need disassemble the back to the steering gear assembly, carry out the gas tightness with spare part respectively and detect, waste time and energy, increased the work load that the gas tightness detected is solved.

Description

Electric steering gear assembly air tightness detection device

Technical Field

The utility model relates to an electric steering gear assembly gas tightness detection device belongs to the auto steering system technical field.

Background

A steering gear, which is a mechanical device to be driven both manned and unmanned and having a power source, randomly changes a running course and direction during running, is the most important part of a steering system. Because the electric steering gear assembly is arranged at the bottom of the automobile, the requirements on water resistance, dust resistance and impurity resistance of the electric steering gear assembly are higher, so that the air tightness detection is required to be carried out on the electric steering gear assembly after the electric steering gear assembly is assembled, and the dust resistance and the moisture resistance of the electric steering gear assembly are ensured.

The existing air tightness detecting instrument can only identify an electric steering gear assembly with unqualified air tightness, and can not effectively identify the specific position causing the unqualified air tightness of the electric steering gear assembly, so that the problem parts or assembly joints causing the unqualified air tightness of the steering gear assembly are inconvenient to find out, in order to find out the specific reason causing the unqualified air tightness of the steering gear assembly, the air tightness detection is carried out on the parts one by one after the steering gear assembly is usually needed to be disassembled, time and labor are wasted, and the workload of the air tightness detection is increased, therefore, the air tightness detecting device of the electric steering gear assembly is necessary to be designed.

Disclosure of Invention

An object of the utility model is to provide a commonality is strong, can further discern and cause the unqualified position of steering gear assembly gas tightness, find out defective spare part or assembly connection department to solve current gas tightness detecting instrument and can not effectively discern and cause the unqualified concrete position of steering gear assembly gas tightness, need disassemble the back to the steering gear assembly, carry out the gas tightness with spare part respectively and detect, waste time and energy, increased the electronic steering gear assembly gas tightness detection device of gas tightness detection work load problem.

The utility model discloses a realize above-mentioned purpose through following technical scheme:

the utility model provides an electric steering gear assembly gas tightness detection device, it comprises box, elevating system, gas bomb and gas transmission connection sealing member, its characterized in that: the box body is provided with a lifting mechanism, a gas transmission connecting sealing piece is arranged above the lifting mechanism, one end of the outer side of the box body is provided with a gas storage bottle, and the gas storage bottle is respectively communicated with the lifting mechanism and the gas transmission connecting sealing piece through a manual gas control valve.

The lifting mechanism is composed of a supporting plate, lifting cylinders and connecting pieces, the supporting plate is arranged in the box body, the lifting cylinders are arranged on the outer end faces of the box body at the two ends of the supporting plate, and the end heads of the piston rods of the lifting cylinders are fixedly connected with the supporting plate through the connecting pieces.

The connecting piece comprises a connecting plate and a connecting block, the connecting plate is in an inverted T shape, and the connecting block is fixedly arranged at the top of the connecting plate.

The supporting plate is a rectangular plate, chamfers are arranged at four corners of the supporting plate, and a plurality of circulation holes are formed in the supporting plate.

The gas transmission connecting sealing piece is composed of a gas transmission head, a gas transmission hose and a plugging bolt, wherein a gas guide hole is formed in the circumference of the gas transmission head, the gas guide hole is communicated with a manual gas control valve through a gas pipe connector and the gas transmission hose, and the gas transmission head and the plugging bolt are in sealing connection with two ends of a rack of the steering gear assembly, so that the gas transmission head and the plugging bolt form sealing for the steering gear assembly.

The gas transmission head and the plug are respectively cylindrical, and stepped holes are formed in the centers of the gas transmission head and the plug.

Four corners of the bottom of the box body are provided with universal wheels with self-locking structures, and the top of the other side of the box body corresponding to the gas storage bottle is fixedly provided with a handle.

Compared with the prior art, the utility model beneficial effect lie in:

according to the electric steering gear assembly air tightness detection device, water is injected into the box body, the air delivery heads and the plugs are arranged at two ends of the steering gear assembly, the steering gear assembly is inflated, the position of bubbles generated by the steering gear assembly in water is observed, and therefore the problem parts or assembly joints causing the air tightness of the steering gear assembly to be unqualified are found out; through changing the steering gear assembly sealing connection of shutoff bolt and different models, can carry out the gas tightness to the steering gear assembly of multiple model and detect, solve current gas tightness detecting instrument and can not effectively discern and cause the unqualified concrete position of steering gear assembly gas tightness, need disassemble the back to the steering gear assembly, carry out the gas tightness with spare part respectively and detect, waste time and energy, increased the problem of the work load that the gas tightness detected.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic side view of the present invention;

fig. 3 is a schematic top view of the present invention;

fig. 4 is a schematic structural view of the supporting plate of the present invention ascending to the highest position;

fig. 5 is a schematic structural view of the steering gear assembly of the present invention;

fig. 6 is a schematic perspective view of the connecting member of the present invention;

fig. 7 is a schematic sectional view of the gas delivery head of the present invention.

In the figure: 1. a box body; 2. a gas cylinder; 3. a manual pneumatic control valve; 4. a lifting cylinder; 5. connecting blocks; 6. a connecting plate; 7. a support plate; 8. a flow-through hole; 9. a gas delivery head; 10. a gas hose; 11. blocking; 12. plugging the bolt; 13. a handle; 14. a universal wheel; 15. a diverter assembly; 16. a rack; 17. and (4) air vents.

Detailed Description

The air tightness detection device of the electric steering gear assembly is composed of a box body 1, a lifting mechanism, a gas storage bottle 2 and a gas transmission connecting sealing piece, wherein the top of the box body 1 is open; the lifting mechanism is arranged on the box body 1 and comprises a supporting plate 7, a lifting cylinder 4 and a connecting piece, the supporting plate 7 is horizontally arranged in the box body 1, the supporting plate 7 is a rectangular plate, four corners of the supporting plate 7 are provided with chamfers, the supporting plate 7 is provided with a plurality of circulation holes 8, the circulation holes 8 and the chamfers are used for reducing resistance of water to the supporting plate 7, and the supporting plate 7 is convenient to move up and down in the box body 1 filled with water during working. Clamps (not shown) are arranged on the support plate 7 between the flow holes 8 and are used for fixing the steering gear assembly 15 on the support plate 7 during operation.

There is lift cylinder 4 through mount pad fixed mounting on the 1 outer terminal surface of box at backup pad 7 both ends, be provided with the connecting piece on lift cylinder 4's the tailpiece of the piston rod, the connecting piece is "7" font, the connecting piece comprises connecting plate 6 and connecting block 5, the connecting plate is "inverted T" font, connecting block 5 and lift cylinder 4's piston rod fixed connection is passed through to the one end of connecting plate 6, the other end of connecting plate 6 extends to in the box 1 with backup pad 7 fixed connection, in operation, the piston rod through lift cylinder 4 is vertical upwards to be stretched out, drive connecting block 5 and connecting plate 6 go upward, make backup pad 7 go upward in box 1 in step, when the piston rod stretches out completely, backup pad 7 can go upward to with 1 top parallel and level of box.

The gas storage bottle 2 is mounted on a mounting seat on one side of a lifting cylinder 4 at one end of the box body 1, a manual pneumatic control valve 3 (a double-station control valve) is fixedly mounted on the mounting seat above the gas storage bottle 2, the gas storage bottle 2 is communicated with the manual pneumatic control valve 3 through a gas pipe, a gas conveying hose 10 and a communicating pipe are mounted on the manual pneumatic control valve 3 through a Y-shaped three-way joint, one end of the communicating pipe is respectively communicated with the lifting cylinders 4 at two ends of the box body 1, and a gas conveying connection sealing piece is mounted at the end of the gas conveying hose 10. The gas transmission connecting sealing element is composed of a gas transmission head 9 and a blocking bolt 12, the gas transmission head 9 is cylindrical, a step hole is formed in the center of the gas transmission head 9, gas guide holes 17 are radially formed in the circumference of the gas transmission head 9, the gas guide holes 17 are communicated with the center step hole, a gas pipe connector is mounted on the gas guide holes 17 in a threaded mode, and the gas transmission head 9 is communicated with a gas transmission hose 10 through the gas pipe connector.

The plugging bolt 12 is movably sleeved in a step hole of the gas transmission head 9, a flange corresponding to the gas transmission head 9 is arranged on the outer circumference of one end of the plugging bolt 12, and a sealing ring is arranged between the flange and the gas transmission head 9 and used for sealing between the flange and the gas transmission head 9. In operation, the screw portion of the plugging bolt 12 is in threaded connection with the rack 16 of the steering gear assembly 15, so that the gas delivery head 9 is pressed to form a seal with one end port of the steering gear assembly 15.

When two ends of a steering gear assembly 15 between a plugging bolt 12 and a rack 16 respectively work, firstly, the steering gear assembly 15 is fixedly arranged on a supporting plate 7 through a clamp, a gas transmission connecting sealing piece is arranged on one end port of the steering gear assembly 15, and meanwhile, a plug 11 is arranged on the other end port of the steering gear assembly 15 in a threaded mode. The plug 11 is composed of a plug body and a plugging bolt 12, the plug body is cylindrical, a step hole is formed in the center of the plug body, the T-shaped plugging bolt 12 is sleeved in the plug body, and the plug 11 is similar to the gas transmission connecting sealing element in structure; the mounting structure is the same as the gas transmission connecting sealing element; thereby sealing the interior of the steering gear assembly 15.

In the initial state, the manual pneumatic control valve 3 is in a horizontal state, at the moment, the steering gear assembly 15 and the lifting cylinder 4 are in a gas-off state, and when the manual pneumatic control valve 3 is pulled upwards clockwise, the gas storage bottle 2 is used for ventilating the gas transmission hose 10 through the manual pneumatic control valve 3 so as to perform gas tightness detection; when the manual pneumatic control valve 3 is pulled downwards anticlockwise, the gas storage bottle 2 is communicated with the lifting cylinder 4 through the manual pneumatic control valve 3 so as to control the piston rod of the lifting cylinder 4 to extend out.

The four corners of the bottom of the box body 1 are provided with universal wheels 14 with self-locking structures, so that the box body 1 can be conveniently moved, the bottom of the box body 1 at the inner side of the universal wheels 14 is provided with a water outlet for discharging water in the box body 1, and a handle 13 is fixedly arranged at the top of the other end of the box body 1 corresponding to the gas storage bottle 2 and is convenient for pushing the box body 1.

When the air tightness detection device works, the manual pneumatic control valve 3 is pulled downwards firstly, the air storage bottle 2 is communicated with the lifting cylinder 4 through the manual pneumatic control valve 3, a piston rod of the lifting cylinder 4 extends out, the supporting plate 7 moves upwards in the box body 1 through the connecting block 5 and the connecting plate 6, when the piston rod extends out completely, the supporting plate 7 moves upwards to be flush with the top of the box body 1, a worker fixes the steering gear assembly 15 in the middle of the supporting plate 7, then the air transmission head 9 and the plug 11 are respectively sleeved at two ends of the steering gear assembly 15, after the sleeving is completed, the plug bolt 12 is inserted into a step hole of the air transmission head 9 and the plug 11, the plug bolt 12 is installed at the end of a rack 16 of the steering gear assembly 15 in a threaded mode, the air transmission head 9 and the plug 11 are extruded through the plug bolt 12, and the end faces of the air transmission head 9 and the plug 11 are in abutting and sealing connection with the steering gear assembly 15.

The manual pneumatic control valve 3 is pulled to be in a horizontal state, so that a gas circuit between the gas storage bottle 2 and the lifting cylinder 4 is disconnected, the piston rod of the lifting cylinder 4 is reset under the self weight, the support plate 7 on which the steering gear assembly 15 is placed is driven to reset downwards, and after the resetting is completed, water is injected into the box body 1 and overflows the highest point of the steering gear assembly 15 to submerge the steering gear assembly 15.

The manual pneumatic control valve 3 is pulled upwards, the gas storage cylinder 2 is communicated with the steering gear assembly 15 through the manual pneumatic control valve 3 and the gas transmission hose 10, the problem parts or assembly joints causing the air tightness of the steering gear assembly 15 to be unqualified are found out by observing the position of bubbles generated by the steering gear assembly 15 in water, after the detection is finished, the manual pneumatic control valve 3 is pulled downwards, the support plate 7 drives the steering gear assembly 15 to go upwards, after the air tightness reaches the highest position, the plugging bolts 12 at two ends of the steering gear assembly 15 are firstly disassembled, then the detected steering gear assembly 15 is disassembled, and then the air tightness detection of the steering gear assembly 15 is finished.

When the steering gear assemblies 15 of different models need to be detected, the plugging bolts 12 corresponding to the racks 16 are replaced, and the operations are repeated, so that the steering gear assemblies 15 of different models can be detected.

The device for detecting the air tightness of the electric steering gear assembly has strong universality, the air delivery head 9 and the plug 11 are arranged at two ends of the steering gear assembly 15 by injecting water into the box body 1, the steering gear assembly 15 is inflated, the position of bubbles generated by the steering gear assembly 15 in water is observed, the position causing the air tightness failure of the steering gear assembly 15 can be further identified, and defective parts or assembly joints can be found; the problem of current gas tightness detecting instrument can not effectively discern the concrete position that causes 15 gas tightness of steering gear assembly unqualified, need disassemble the back to steering gear assembly 15, carry out the gas tightness with spare part respectively and detect, waste time and energy, increased the work load that the gas tightness detected is solved.

Claims

1. The utility model provides an electric steering gear assembly gas tightness detection device, it comprises box (1), elevating system and gas bomb (2), its characterized in that: the lifting mechanism is arranged at two ends of the box body (1) through mounting seats and consists of a supporting plate (7), a lifting cylinder (4) and a connecting plate (6), the supporting plate (7) is arranged in the box body (1), the lifting cylinder (4) is arranged on the outer end face of the box body (1) at two ends of the supporting plate (7), and the end of a piston rod of the lifting cylinder (4) is fixedly connected with the supporting plate (7) through a connecting piece; the air storage bottle is characterized in that an air storage bottle (2) is mounted on a mounting seat on one side of a lifting air cylinder (4) at one end of the box body (1), a manual pneumatic control valve (3) is fixedly mounted on the mounting seat above the air storage bottle (2), and the air storage bottle (2) is communicated with the manual pneumatic control valve (3) through an air pipe.

2. The apparatus for detecting airtightness of an electric power steering assembly according to claim 1, wherein: the manual pneumatic control valve (3) is provided with a gas transmission hose (10) and a communicating pipe through a Y-shaped three-way joint, one end of the communicating pipe is respectively communicated with the lifting cylinders (4) at the two ends of the box body (1), and the end of the gas transmission hose (10) is provided with a gas transmission connection sealing element.

3. The apparatus for detecting airtightness of an electric power steering assembly according to claim 1, wherein: the connecting piece constitute by connecting plate (6) and connecting block (5), connecting plate (6) are "T" shape, connecting block (5) are adorned admittedly at connecting plate (6) top, connecting plate (6) one end is passed through connecting block (5) and is connected with lift cylinder (4), the connecting plate (6) other end is connected with backup pad (7).

4. The apparatus for detecting airtightness of an electric power steering assembly according to claim 1, wherein: the supporting plate (7) is a rectangular plate, four corners of the supporting plate (7) are provided with chamfers, and the supporting plate (7) is provided with a plurality of circulation holes (8).

5. The electric steering gear assembly airtightness detection apparatus according to claim 2, wherein: the gas transmission connecting sealing element is composed of a gas transmission head (9) and a plugging bolt (12), the gas transmission head (9) is cylindrical, a step hole is formed in the center of the gas transmission head (9), gas guide holes (17) are radially formed in the circumference of the gas transmission head (9), the gas guide holes (17) are communicated with the center step hole, a gas pipe connector is installed on the gas guide holes (17) in a threaded mode, and the gas transmission head (9) is communicated with a gas transmission hose (10) through the gas pipe connector.

6. The apparatus for detecting airtightness of an electric power steering assembly according to claim 1, wherein: four corners of the bottom of the box body (1) are provided with universal wheels (14) with self-locking structures, and the top of the other side of the box body (1) corresponding to the gas storage bottle (2) is fixedly provided with a handle (13).