CN203629841U

CN203629841U - Device for steering gear returnability testing

Info

Publication number: CN203629841U
Application number: CN201320695744.0U
Authority: CN
Inventors: 纪业
Original assignee: CHONGQING JIGONG AUTOMOBILE POWER STEERING Co Ltd
Current assignee: CHONGQING JIGONG AUTOMOBILE POWER STEERING Co Ltd
Priority date: 2013-11-06
Filing date: 2013-11-06
Publication date: 2014-06-04
Anticipated expiration: 2023-11-06

Abstract

The utility model provides a device for steering gear returnability testing. The device comprises a testing bench and a supporting frame which is under the testing bench and is used for supporting the testing bench. The testing bench is provided with an electric steering wheel assembly, a steering gear mounting piece which fixes a steering gear shell, a steering gear oil cylinder mounting piece, two oil pipe through holes I and two oil pipe through holes II. A supporting plate is arranged between the testing bench and the supporting frame. The supporting frame is formed by four vertically arranged supporting beams. The top ends of the four supporting beams are fixedly connected to four corners at the lower part of the supporting plate respectively. The electric steering wheel assembly comprises a vertically arranged vertical beam, an inverted L-shaped bracket formed by a cross beam fixed at the top end of the vertical beam, and a motor. The free end of the cross beam is provided with a frame type fixing member with a first through hole. The first through hole is internally provided with a screw rod which is in clearance fit with the first through hole. The bottom of the screw rod is provided with a sleeve rod, and the top of the screw rod is connected with a motor output shaft. The testing device has the advantages of simple structure and strong versatility, for different types of hydraulic power steering gears, only the replacement of a steering gear installation piece is needed, and the operation is simple.

Description

A kind of device that returns positive aptitude tests for steering gear

Technical field

The utility model relates to auto parts and components proving installation, specifically refers to a kind of device that returns positive aptitude tests for steering gear.

Background technology

Hydraulic power steering gear, is arranged on automotive front near driver's one side.It can provide power-assisted and assist driver to complete the function turning in Vehicular turn.The power resources of hydraulic power steering gear are engines, driving automobile operation of oil pump when engine operation.In the time that hydraulic oil acts on the end face (pressure-bearing surface) of piston, rack piston is produced to thrust.Along with the rising thrust of oil pressure increases, when thrust increases to and makes deflecting roller overcome road resistance, promote deflecting roller and rotate, vehicle enters steering state.

The security performance that time positive ability direct relation of hydraulic power steering gear is installed this hydraulic power steering gear vehicle, therefore, arbitrary hydraulic power steering gear all should return positive aptitude tests before dispatching from the factory, and in the situation that time positive ability is up to standard, can dispatches from the factory and start selling.In prior art, be not also specifically designed to the test unit that positive ability is tested that returns of hydraulic power steering gear to various models.

Utility model content

The problems referred to above that exist for prior art, the purpose of this utility model is a kind of device that positive aptitude tests provide that returns for hydraulic power steering gear.

For achieving the above object, the utility model adopts following technical scheme: a kind of device that returns positive aptitude tests for steering gear, comprise test-bed and electric steering wheel assembly, described test-bed comprises the testing table of strip and is positioned at below testing table and for supporting the bracing frame of testing table, on described testing table, have the steering gear fabricated section of stationary deflector housing, two oil pipe through hole I and two oil pipe through hole II, described electric steering wheel assembly is arranged on testing table;

Support frame as described above is by four brace summer I that vertically arrange, brace summer II, brace summer III and brace summer IV form, between described testing table and bracing frame, be provided with back up pad, described back up pad is parallel to testing table setting, left side in back up pad is provided with right baffle-plate, the right side of back up pad is provided with right baffle plate, described right baffle-plate, right baffle plate is all located between back up pad and testing table, the two ends up and down of right baffle-plate are fixedly connected with testing table with back up pad respectively, the two ends up and down of right baffle plate are fixedly connected with testing table with back up pad respectively, brace summer I, brace summer II, the top of brace summer III and brace summer IV is fixedly connected on respectively four jiaos of back up pad below,

Described electric steering wheel assembly comprises support, described support comprises the vertical beam of vertical setting and is fixed on the crossbeam on vertical beam top, described vertical beam and crossbeam form inverted L-shaped structure, the bottom of described vertical beam is fixedly connected on testing table, the free end of described crossbeam has frame type fixture, on described frame type fixture, have the first through hole running through up and down, be provided with and the screw rod of its clearance fit in described the first through hole, the bottom of screw rod is connected with the loop bar that can rotate take screw rod center line as axle; The top of described frame type fixture is provided with motor, and the output shaft of described motor is connected with the top of screw rod and is circumferentially fixing, drives screw rod to rotate along its center line.

As optimization, described steering gear fabricated section is the first horizontal fixation steel plate and the first vertical L shaped structure that steel plate formation is installed, the described first horizontal fixation steel plate and the first vertical installation steel plate are the integral structure that one-step casting obtains, the first horizontal fixation steel plate horizontally set and being installed on testing table, the first vertical steel plate of installing vertically arranges and on it, has multiple for the first mounting hole of steering gear housing is installed.

As optimization, also comprise the stop means swinging for standing screw, described stop means comprises the nut coordinating with screw rod and is fixedly connected on the gag lever post on nut side; Described frame type fixture has the second through hole on vertical side, described gag lever post through the second through hole and with the second through hole wringing fit.

As optimization, the aperture of described oil pipe through hole I and oil pipe through hole II is 32.8mm.

With respect to prior art, the utlity model has following advantage: the utility model provides a kind of device that returns positive aptitude tests for steering gear can be specifically designed to the test of returning positive ability of hydraulic power steering gear, this device has highly versatile, feature simple in structure, in the face of the hydraulic power steering gear of different model, only need to change steering gear fabricated section, simple to operate; In test process, driven by motor bolt rotary is realized the input of rotating torque, and rotating torque size is better to be controlled and determines, is conducive to improve the accuracy of steering gear performance test data.

Accompanying drawing explanation

Fig. 1 is the structural representation that returns the device of positive aptitude tests for steering gear.

Embodiment

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Referring to Fig. 1, a kind of device that returns positive aptitude tests for steering gear, comprise test-bed and electric steering wheel assembly, test-bed comprises the testing table 20 of strip and is positioned at below testing table and for supporting the bracing frame of testing table, on described testing table 20, there is the steering gear fabricated section of stationary deflector housing, two oil pipe through hole I 201 and two oil pipe through hole II 202, the aperture of oil pipe through hole I 201 and oil pipe through hole II 202 is preferably 32.8mm, so both being beneficial to oil pipe passes, be beneficial to again oil pipe being fixed in this oil pipe through hole tightly, electric steering wheel assembly is arranged on testing table 20.

Support frame as described above is made up of four brace summer I 21, brace summer II 22, brace summer III 23 and brace summer IV 24 that vertically arrange, for in the time that positive aptitude tests are returned in flowed friction steering gear, left hydraulic jack and right hydraulic jack also need to be installed on testing table, be convenient to place two oil inlet pipes of left hydraulic jack and right hydraulic jack and flowline, the oil inlet pipe of these two hydraulic cylinders can be connected with oil inlet pipe and the flowline of oil pump better with flowline, can between testing table 20 and bracing frame, be provided with back up pad 29, back up pad 29 is parallel to testing table setting, be provided with right baffle-plate 290 in the left side of back up pad 29, the right side of back up pad 29 is provided with right baffle plate 291, right baffle-plate 290, right baffle plate 291 is all located between back up pad 29 and testing table 20, the two ends up and down of right baffle-plate 290 are fixedly connected with the downside of testing table 20 with the upper side of back up pad 29 respectively, the two ends up and down of right baffle plate 291 respectively with upper side be fixedly connected with the downside of testing table 20, right baffle-plate 290, right baffle plate 291, testing table 20 and back up pad 29 have formed the cavity of a both-side opening, brace summer I 21, brace summer II 22, the top of brace summer III 23 and brace summer IV 24 is fixedly connected on respectively four jiaos of back up pad 29 belows.Wherein brace summer I 21 and brace summer II 22 are positioned at the front side of testing table, described brace summer III 23 and brace summer IV 24 and are positioned at the rear side of testing table, buttress brace 25 before being provided with between brace summer I 21 and brace summer II 22, after being provided with between brace summer III 23 and brace summer IV 24 buttress brace 26, between brace summer I 21 and brace summer III 23, be provided with left buttress brace 27, left buttress brace is connected to the bottom of brace summer I and brace summer III, between brace summer II 22 and brace summer IV 24, be provided with right buttress brace 28, right buttress brace is connected to the bottom of brace summer II and brace summer IV.The rigidity that further raising bracing frame is set and the stability of front buttress brace 25, rear buttress brace 26, left buttress brace 27 and right buttress brace 28, the bottom of left buttress brace 27 and right buttress brace 28 has respectively the contact area of left buttress brace flange 270 and right buttress brace flange 280 these bracing frames of increase and bottom surface or other supporting surfaces, improves the stability of bracing frame.

Described electric steering wheel assembly comprises support and motor 14, support comprises the vertical beam 11 of vertical setting and is fixed on the crossbeam 12 on vertical beam 11 tops, vertical beam 11 and crossbeam 12 form inverted L-shaped structure, the bottom of described vertical beam 11 is fixedly connected on testing table, the base of vertical beam 11 has flange, on flange, have multiple (being generally 4 ~ 6) threaded hole for fixing vertical beam 11, multiple threaded holes are uniformly distributed along vertical beam for 11 1 weeks; The free end of crossbeam 11 has frame type fixture, on frame type fixture, there is the first through hole 155 running through up and down, frame type fixture is made up of upper steel plate 151, lower steel plate 152, left plate 153, right steel plate 154 4 block plates, upper steel plate and lower steel plate horizontally set and be parallel to each other, left plate and right steel plate vertically arrange and are parallel to each other, the first through hole 155 runs through upper steel plate and lower steel plate, in the first through hole 155, be provided with and the screw rod 141 of the first through hole 155 clearance fit, the bottom of screw rod 141 is connected with the loop bar 16 that can rotate take screw rod 141 center lines as axle; The top of frame type fixture is provided with motor 14, it is the top that motor 14 is positioned at upper steel plate, the output shaft of described motor 14 is connected with the top of screw rod 141 and is circumferentially fixing, drive screw rod 141 to rotate along its center line, motor 14 can be bolted to connection at upper steel plate top, in order to reach equilibrium activity, make the stability of device of simulated automotive steering wheel assembly better, on the end being connected with vertical beam 11 tops at crossbeam 12, be installed with balancing weight 13, the quality of the quality of this balancing weight 13 and motor 14 is suitable.When motor 14 drives screw rod 141 to rotate, screw rod 141 easily produces and swings in the first through hole 155, so, can also comprise a stop means swinging for standing screw 141, this stop means comprises the nut 142 coordinating with screw rod 141 and is fixedly connected on the gag lever post 143 on nut side; On the vertical side of frame type fixture, on left plate or right steel plate, there is the second through hole, gag lever post through the second through hole and with the second through hole wringing fit, thereby limited the swing in the first through hole 155 when screw rod 141 rotates take its center line as axle.

Steering gear fabricated section can be the L shaped structure that the first horizontal fixation steel plate 32 and the first vertical installation steel plate 33 form, the integral structure that the first horizontal fixation steel plate 32 and the first vertical installation steel plate 33 obtain for one-step casting, the first horizontal fixation steel plate 32 horizontally sets and being installed on testing table, on the first horizontal fixation steel plate, there are multiple threaded holes, be generally four, be positioned at four jiaos of the first horizontal fixation steel plate, bolt is fixed on the first horizontal fixation steel plate on testing table through threaded hole, the first vertical steel plate 33 of installing vertically arranges and on it, has multiple (being generally three) for the first mounting hole 34 of steering gear housing is installed.This first mounting hole is threaded hole, and for the steering gear to a series of identical models is tested, the first vertical installation on steel plate is typically provided with the different multiple threaded holes of shape size, and these threaded holes are three multiple normally.In order to strengthen the rigidity of steering gear fabricated section, the first horizontal fixation steel plate 32 and the first vertical the first stiffening plate 35 that is also provided with right-angle triangle between steel plate 33 of installing, two right-angle sides of described the first stiffening plate 35 are fixedly connected on respectively the first horizontal fixation steel plate 32 and the first vertical install on the corresponding end of steel plate 33 (in the time that a right-angle side of the first stiffening plate is fixedly connected on the horizontal left part of the first horizontal fixation steel plate, another right-angle side of the first stiffening plate is also fixedly connected on first vertically on the horizontal left part of installation steel plate).

Use the test unit of this test steering gear performance carry out hydraulic power steering gear return positive aptitude tests time, by steering gear fabricated section, steering assembly is arranged on testing table, the hydraulic jack of double-piston is arranged on testing table, left hydraulic jack and right hydraulic jack are installed on testing table again, wherein the bottom of left hydraulic jack cylinder barrel and right hydraulic jack cylinder barrel is arranged on testing table rotationally, on left hydraulic jack cylinder barrel and right hydraulic jack cylinder barrel, all there is oil-in and oil-out, in test process, need to oil pump left in hydraulic jack cylinder barrel and right hydraulic jack cylinder barrel pump oil simulate the steering force that left and right front-wheel loads, the oil-out of oil pump is communicated with the oil-in on left hydraulic jack cylinder barrel and right hydraulic jack cylinder barrel respectively by the first oil pipe, the oil-in of oil pump is communicated with by oil-out on the left hydraulic jack cylinder barrel of the second oil pipe and right hydraulic jack cylinder barrel, for the first oil pipe easy to use and the second oil pipe are generally Y-pipe, a bifurcated of the first oil pipe is communicated with the oil-out of oil pump, two other bifurcated is communicated with the oil-in on left hydraulic jack cylinder barrel and right hydraulic jack cylinder barrel respectively through an oil pipe through hole I, an oil pipe through hole II on testing table respectively, a bifurcated of the second oil pipe is communicated with the oil-in of oil pump, and two other bifurcated is communicated with the oil-out on left hydraulic jack cylinder barrel and right hydraulic jack cylinder barrel respectively through another oil pipe through hole I, another oil pipe through hole II on testing table respectively, driven by motor bolt rotary, screw rod drives loop bar to rotate, thereby loop bar drives valve core rotation to be written into rotating torque to steering gear, valve core rotation drives rack piston to move up and down, rack piston drives output shaft rotation, one end of output shaft is provided with spline and is connected with one end of Rocker arm assembly, by Rocker arm assembly, the rotating torque being written into is passed to arbitrary piston rod of double-piston hydraulic oil cylinder, one, two piston rods of piston hydraulic pressure oil cylinder are stretched, a contracting, thereby realizing simulation left and right front-wheel left wheel simulation steel plate and right simulated wheel steel plate rotates, load on the positive power size of returning of steering gear by regulating oil pump to pump into how much adjusting left wheels simulation steel plates of oil mass in left hydraulic jack cylinder barrel and right hydraulic jack cylinder barrel and right simulated wheel steel plate, left and right front-wheel when the actual driving of simulating vehicle loads on the Hui Zhengli of steering gear.

Finally explanation is, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.

Claims

1. one kind is returned the device of positive aptitude tests for steering gear, it is characterized in that: comprise test-bed and electric steering wheel assembly, described test-bed comprises the testing table (20) of strip and is positioned at below testing table and for supporting the bracing frame of testing table, steering gear fabricated section, two oil pipe through hole I (201) and two oil pipe through hole II (202) on described testing table (20) with stationary deflector housing, described electric steering wheel assembly is arranged on testing table;

Support frame as described above is by four brace summer I (21) that vertically arrange, brace summer II (22), brace summer III (23) and brace summer IV (24) form, between described testing table (20) and bracing frame, be provided with back up pad (29), described back up pad (29) is parallel to testing table setting, be provided with right baffle-plate (290) in the left side of back up pad (29), the right side of back up pad (29) is provided with right baffle plate (291), described right baffle-plate (290), right baffle plate (291) is all located between back up pad (29) and testing table (20), the two ends up and down of right baffle-plate (290) are fixedly connected with testing table (20) with back up pad (29) respectively, the two ends up and down of right baffle plate (291) are fixedly connected with testing table (20) with back up pad (29) respectively, the top of described brace summer I (21), brace summer II (22), brace summer III (23) and brace summer IV (24) is fixedly connected on respectively four jiaos of back up pad (29) below,

Described electric steering wheel assembly comprises support, described support comprises the vertical beam (11) of vertical setting and is fixed on the crossbeam (12) on vertical beam (11) top, described vertical beam (11) and crossbeam (12) form inverted L-shaped structure, the bottom of described vertical beam is fixedly connected on testing table, the free end of described crossbeam (12) has frame type fixture, on described frame type fixture, there is the first through hole (155) running through up and down, in described the first through hole (155), be provided with the screw rod (141) with its clearance fit, the bottom of screw rod (141) is connected with the loop bar (16) that can rotate take screw rod (141) center line as axle, the top of described frame type fixture is provided with motor (14), and the output shaft of described motor (14) is connected with the top of screw rod (141) and is circumferentially fixing, drives screw rod (141) to rotate along its center line.

2. the device that returns positive aptitude tests for steering gear according to claim 1, it is characterized in that: described steering gear fabricated section is the first horizontal fixation steel plate (32) and the first vertical L shaped structure that steel plate (33) formation is installed, the integral structure that the described first horizontal fixation steel plate (32) and the first vertical installation steel plate (33) obtain for one-step casting, the first horizontal fixation steel plate (32) horizontally set and being installed on testing table, the first vertical steel plate (33) of installing vertically arranges and on it, has multiple for first mounting hole (34) of steering gear housing is installed.

3. the device that returns positive aptitude tests for steering gear as claimed in claim 1, it is characterized in that: also comprise the stop means swinging for standing screw (141), described stop means comprises the nut (142) coordinating with screw rod (141) and is fixedly connected on the gag lever post (143) on nut (142) side; Described frame type fixture has the second through hole on vertical side, described gag lever post (143) through the second through hole and with the second through hole wringing fit.

4. the device that returns positive aptitude tests for steering gear according to claim 1, is characterized in that: the aperture of described oil pipe through hole I (201) and oil pipe through hole II (202) is 32.8mm.