CN105067283A - Auxiliary support for forklift steering bridge strength test - Google Patents
Auxiliary support for forklift steering bridge strength test Download PDFInfo
- Publication number
- CN105067283A CN105067283A CN201510527866.2A CN201510527866A CN105067283A CN 105067283 A CN105067283 A CN 105067283A CN 201510527866 A CN201510527866 A CN 201510527866A CN 105067283 A CN105067283 A CN 105067283A
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- top board
- base plate
- guide pillar
- steering bridge
- strength test
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- Forklifts And Lifting Vehicles (AREA)
Abstract
The present invention relates to an auxiliary support for a forklift steering bridge strength test, comprising a support body connected with a device platform and an auxiliary support frame arranged on the support body. The auxiliary support frame is provided with adjusting screws which are configured to support the middle portion of the steering bridge, the support body is provided with two guide pillar components which are configured to support a switching device, and the switching device is configured to connect power output units and the steering bridge. According to the technical scheme provided by the invention, the middle portion of the steering bridge is supported through the auxiliary support frame, and the switching device is supported through the guide pillar components, therefore safety protection of the forklift steering bridge in the test is ensured, the effective protection without deformation of the steering bridge in the steering bridge test is performed, and the accuracy of the test is improved.
Description
Technical field
The present invention relates to fork truck field, be specifically related to a kind of forklift steering bridge strength test supplemental support.
Background technology
Forklift steering bridge is as one of the main stressed member of fork truck, and whether its intensity meets the demands is directly connected to the reliability and security of fork truck.Easily there is permanent strain when its intensity is not enough in forklift steering bridge, causes tire premature wear, steering cylinder leakage of oil, turns to the situation generations such as malfunctioning, pontic fracture can occur time serious, cause security incident.Therefore, testing inspection is carried out to the intensity of forklift steering bridge and seem particularly important.Because steeraxle center of gravity does not overlap with the centre of gyration of deflecting roller, exist and lay particular stress on phenomenon, easily tumble during press-bending, cause the accident, there is potential safety hazard.
Mainly there is following weak point in the domestic strength test device to forklift steering bridge at present: 1) domestic most producers adopt the mode on the heavy limit of chain suspension, initially cannot the problem of horizontal positioned although solve bending test, brings new problem simultaneously; 2), during steeraxle stress deformation, because chain can hinder it to be out of shape, measuring accuracy is affected; 3) because chain hinders the effect of distortion, can cause lateral excursion accumulation occurs in steeraxle process of the test, depart to one end spindle nose to a certain degree can be made and support, cause security incident.Therefore, testing crew needs to observe its drift condition in time in process of the test, and adjusts as required, and the labour intensity of testing crew is large; 4) forklift steering bridge can rupture in strength test process, and tested workpiece can draw and turn over by chain, and protection deficiency easily causes security incident.
Summary of the invention
The object of the present invention is to provide a kind of forklift steering bridge strength test supplemental support, this supplemental support can solve steeraxle test and lay particular stress on that cause initially cannot the problem of horizontal positioned.
For achieving the above object, present invention employs following technical scheme: comprise the stake body be connected with equipment platform and the auxiliary support frame be arranged on stake body, described auxiliary support frame is provided with the adjustment screw for supporting steeraxle middle part, described stake body is provided with the Guide column component supporting switching device, and described switching device is used for connecting power take-off unit and steeraxle.
Described stake body comprises horizontally disposed first top board and the first base plate in above-below direction, the first described top board and the two blocks of side plates being provided with vertical connection both between the first base plate, described side plate is arranged along the length direction of the first top board, four piece of first gusset is provided with successively between two blocks of described side plates, the outer panel face of described two blocks of side plates, be provided with the second gusset of connecting lateral plate, the first base plate and the first top board between the first base plate and the first top board, described Guide column component is separately positioned on two ends of the first top board length direction.
Described auxiliary support frame comprises horizontally disposed second top board and the second base plate in above-below direction, the second described top board and the two pieces of risers being provided with vertical connection both between the second base plate, described riser is arranged along the Width of the second top board, the second described base plate is fixed on the first top board, and described adjustment screw is arranged on the second top board.
The second described top board is provided with the kidney slot of fixed adjustment screw, and the flute length direction of described kidney slot and the length direction of the second top board match, and described kidney slot arranges eight altogether.
The first described top board is provided with two T-slot for connecting auxiliary support frame, described T-slot is arranged along the length direction of the first top board, the second described base plate is provided with the second U-type groove be connected by bolt with T-slot, and the first described base plate is provided with the first U-type groove for connection device platform.
The first described base plate is provided with the first lightening hole, the center of described first top board is provided with the second lightening hole, the center of described second base plate is provided with the 3rd lightening hole, described side plate is provided with the 4th lightening hole, and the upper face of described first gusset is provided with the U-shaped breach for dodging Guide column component.
Described Guide column component comprises the guide pillar arranged in vertical, the guide pin bushing matched with guide pillar and be arranged on the supporting screw of guide pillar upper end, described guide pillar comprises guide pillar body and is arranged on the nut of guide pillar body upper end, described guide pillar body is through guide pin bushing and the first top board, described guide pillar body is Step Shaft, comprise the enlarged diameter section being positioned at top and the reduced diameter section being positioned at below, described reduced diameter section is provided with screw thread, described enlarged diameter section is arranged with spring, one end of spring is resisted against on nut, the other end of spring is resisted against guide pin bushing upper end, the enlarged diameter section that described guide pillar body is positioned at guide pin bushing is provided with the lining matched with guide pin bushing inwall, the top of described guide pillar is provided with the first threaded hole matched with supporting screw.
Described guide pin bushing comprises and the sleeve of guide pillar mates and the ring flange being arranged on sleeve lower end, and the inwall at sleeve two ends is provided with the lining mounting groove for mounting bush, and ring flange is connected by screw with the first top board.
The first described top board is provided with the circular hole matched with guide pin bushing, four second threaded holes being circumferentially with fixing guide pin bushing of described circular hole.
As shown from the above technical solution, the present invention realizes supporting to the middle part of steeraxle by auxiliary support frame, realizes supporting, thus solve the security protection problem of forklift steering bridge in process of the test by Guide column component to switching device; Solve in steeraxle process of the test simultaneously and it can not be interfered to be out of shape, the contradiction of effectively protection again simultaneously, test accuracy is improved.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is inner structure schematic diagram of the present invention;
Fig. 3 is using state figure of the present invention;
Fig. 4 is the structural representation of stake body of the present invention;
Fig. 5 is the structural representation of auxiliary support frame of the present invention;
Fig. 6 is the structural representation of guide pillar of the present invention;
Fig. 7 is the structural representation of guide pin bushing of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described:
As Fig. 1, Fig. 2, a kind of forklift steering bridge strength test supplemental support shown in Fig. 3, comprise the stake body 300 be connected with equipment platform and the auxiliary support frame 400 be arranged on stake body 300, auxiliary support frame 400 is provided with the adjustment screw 440 for supporting steeraxle 2 middle part, stake body 300 is provided with the Guide column component 500 supporting switching device 1, switching device 1 is used for connecting power take-off unit and steeraxle 2, namely power take-off unit is by applying acting force to the switching device be connected with steeraxle, reach effect test steeraxle being applied to acting force.Emphasis of the present invention is intended to turning to the centre of sedan-chair to implement supplemental support, and the bracing or strutting arrangement 3 being positioned at steeraxle two ends shown in Fig. 3 and switching device please refer to prior art, do not repeat them here.
Further, as shown in Figure 4, stake body 300 comprises horizontally disposed first top board 310 and the first base plate 320 in above-below direction, two blocks of side plates 330 of vertical connection both are provided with between first top board 310 with the first base plate 320, side plate 330 is arranged along the length direction of the first top board 310, four piece of first gusset 340 is provided with successively between two blocks of side plates 330, the outer panel face of two blocks of side plates 330, connecting lateral plate 330 is provided with between first base plate 320 and the first top board 310, second gusset 350 of the first base plate 320 and the first top board 310, Guide column component is separately positioned on two ends of the first top board 310 length direction.
Further, as shown in Figure 5, auxiliary support frame 400 comprises horizontally disposed second top board 410 and the second base plate 420 in above-below direction, two pieces of risers 430 of vertical connection both are provided with between second top board 410 with the second base plate 420, riser 430 is arranged along the Width of the second top board 410, second base plate 420 is fixed on the first top board 310, and adjustment screw 440 is arranged on the second top board 410.Riser 430 is arranged between the second top board 410 and the second base plate 420, for connecting the second top board 410 and the second base plate 420 and increasing the height of auxiliary support frame 400.
Further, the second top board 410 is provided with the kidney slot 411 of fixed adjustment screw 440, and the flute length direction of kidney slot 411 and the length direction of the second top board 410 match, and kidney slot 411 arranges eight altogether.
Further, first top board 310 is provided with two T-slot 311 for connecting auxiliary support frame 400, T-slot 311 is arranged along the length direction of the first top board 310, second base plate 420 is provided with and is provided with the first U-type groove 321 for connection device platform with T-slot 311 by the second U-type groove 421, first base plate 320 that bolt is connected.
Further, the first base plate 320 is provided with the first lightening hole 322, and preferably, four right angle of the first base plate 320 form L shape angle respectively to internal cutting, and object is all in order to loss of weight; The center that the center of the first top board 310 is provided with the second lightening hole 312, second base plate 420 is provided with the 3rd lightening hole 422, and the setting that side plate 330 is provided with the 4th lightening hole the 331, four lightening hole 331 is for the ease of welding and lifting; The upper face of the first gusset 340 is provided with the U-shaped breach 341 for dodging Guide column component.
Further, as Fig. 2, shown in Fig. 6, Guide column component 500 comprises the guide pillar 510 arranged in vertical, the guide pin bushing 520 matched with guide pillar 510 and be arranged on the supporting screw 530 of guide pillar 510 upper end, guide pillar 510 is a weldment, guide pillar 510 comprises guide pillar body 511 and is arranged on the nut 512 of guide pillar body 511 upper end, guide pillar body 511 is through guide pin bushing 520 and the first top board 310, guide pillar body 511 is Step Shaft, comprise the enlarged diameter section being positioned at top and the reduced diameter section being positioned at below, reduced diameter section is provided with screw thread, enlarged diameter section is arranged with spring 540, one end of spring 540 is resisted against on nut 512, the other end of spring 540 is resisted against guide pin bushing 520 upper end, spring fitting is between guide pillar and guide pin bushing, distortion is not continued to the offset loading force that just can bear steeraxle by both pretensions, the ratio of rigidity of two springs equals the lever ratio of its turning torque, nut 512 is an annular slab, and there is sunk step cutting pattern the side of annular slab, for positioning guide column body, preferably, the periphery of nut 512 processes spanner side's body, is convenient to adjustment and fastening support screw, the enlarged diameter section that guide pillar body 511 is positioned at guide pin bushing 520 is provided with the lining 550 matched with guide pin bushing 520 inwall, preferably, lining 550 adopts brass or nylon material to make, and is a cylinder, for reducing the friction between guide pin bushing 520 and guide pillar 510, increase its serviceable life, the top of guide pillar 510 is provided with the first threaded hole 513 matched with supporting screw 530.
Further, as shown in Figure 7, guide pin bushing is a weldment, guide pin bushing 520 comprises the sleeve 521 matched with guide pillar body 511 and the ring flange 522 being arranged on sleeve 521 lower end, the inwall at sleeve 521 two ends is provided with the lining mounting groove for mounting bush 550, ring flange 522 is connected by screw with the first top board 310, ring flange 522 is an annular plate, centre is stepped hole, macropore is used for installing sleeve 521, hole diameter is greater than the outside diameter of lining 550, being convenient to lining 550 loads in guide pin bushing 520, the another side of ring flange 522 processes round ring boss, boss periphery processes screw mounting hole, for the connection of guide pin bushing 520 and stake body 300.
Further, the first top board 310 is provided with the circular hole 313 matched with guide pin bushing 520, four second threaded holes 314 being circumferentially with fixing guide pin bushing 520 of circular hole 313.
Installation process of the present invention and principle of work as follows:
1, by the installation of test piece: the adjustment screw on adjustment auxiliary support frame, make it use height a little more than reality, ready steeraxle is placed on adjustment head of screw; Reduce adjustment screw height, fall within the bracing or strutting arrangement 3 at two ends under making steeraxle, now, between the end of adjustment screw and steeraxle pontic, retain certain gap, be as the criterion still to reserve about 5 ~ 10mm gap after the stressed elastic deformation of pontic;
2, the adjustment of initial tension of spring: after test trade union college, steeraxle is in free water level state, and the spring that steeraxle lays particular stress on side is compressed, and is as the criterion by decrement with reality, regulates and locks the nut on guide pillar reduced diameter section; Opposite side spring is in non-Pre strained state, and the supporting screw of adjustment guide pillar end, just touches frock with supporting screw head and be as the criterion;
3, equilibrium of forces principle is laid particular stress on: by laying particular stress on side and the non-spring pre-tightening amount laying particular stress on side is arranged, the difference of the pretightning force of two springs is relative to the torque of the pontic axle head centre of gyration, equal the torque relative to the centre of gyration of the weight that lays particular stress on, now steeraxle reaches equilibrium state, and steeraxle keeps balance;
4, the maintenance of equilibrium state during workpiece test: the ratio of rigidity because of two springs equals its lever ratio relative to the steeraxle centre of gyration, when therefore being bent by test specimen, the torque that two springs produce relative to the drive axle centre of gyration is equal, and the stress point of workpiece can keep its original state vertically descending and not rotate;
5, turn to pontic to rupture to protect: during the fracture of steeraxle pontic, its fracture location falls to rapidly supporting screw top and no longer continues to fall, and the Guide column component of supplemental support both sides can effectively stop its rolling to be fallen simultaneously, avoids security incident to occur.
Beneficial effect of the present invention is: 1) thoroughly solve the security protection problem of forklift steering bridge in process of the test; 2) solve in steeraxle process of the test and it can not be interfered to be out of shape, the contradiction of effectively protection again simultaneously; 3) mode owing to not adopting chain to strain, avoids chain and produce pulling force in process of the test, effectively improve test accuracy; 4) eliminate because chain pull causes micro-transversal displacement to accumulate, eliminate potential safety hazard; 5) avoid workpiece when pontic ruptures and pulled the risk overturning and fall by chain; 6) avoid testing crew to need in process of the test repeatedly to the labour intensity adjusted by test piece.
Above-described embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determines.
Claims (9)
1. a forklift steering bridge strength test supplemental support, it is characterized in that: comprise the stake body (300) be connected with equipment platform and the auxiliary support frame (400) be arranged on stake body (300), described auxiliary support frame (400) is provided with the adjustment screw (440) for supporting steeraxle (2) middle part, described stake body (300) is provided with the Guide column component (500) supporting switching device (1), and described switching device (1) is used for connecting power take-off unit and steeraxle (2).
2. forklift steering bridge strength test supplemental support according to claim 1, it is characterized in that: described stake body (300) comprises horizontally disposed first top board (310) and the first base plate (320) in above-below direction, described the first top board (310) and the two pieces of side plates (330) being provided with vertical connection both between the first base plate (320), described side plate (330) is arranged along the length direction of the first top board (310), four piece of first gusset (340) is provided with successively between two pieces of described side plates (330), the outer panel face of described two pieces of side plates (330), connecting lateral plate (330) is provided with between first base plate (320) and the first top board (310), second gusset (350) of the first base plate (320) and the first top board (310), described Guide column component is separately positioned on two ends of the first top board (310) length direction.
3. forklift steering bridge strength test supplemental support according to claim 2, it is characterized in that: described auxiliary support frame (400) comprises horizontally disposed second top board (410) and the second base plate (420) in above-below direction, described the second top board (410) and the two pieces of risers (430) being provided with vertical connection both between the second base plate (420), described riser (430) is arranged along the Width of the second top board (410), described the second base plate (420) is fixed on the first top board (310), described adjustment screw (440) is arranged on the second top board (410).
4. forklift steering bridge strength test supplemental support according to claim 3, it is characterized in that: described the second top board (410) is provided with the kidney slot (411) of fixed adjustment screw (440), the flute length direction of described kidney slot (411) and the length direction of the second top board (410) match, and described kidney slot (411) arranges eight altogether.
5. forklift steering bridge strength test supplemental support according to claim 3, it is characterized in that: described the first top board (310) is provided with two T-slot (311) for connecting auxiliary support frame (400), described T-slot (311) is arranged along the length direction of the first top board (310), described the second base plate (420) is provided with the second U-type groove (421) be connected by bolt with T-slot (311), and described the first base plate (320) is provided with the first U-type groove (321) for connection device platform.
6. forklift steering bridge strength test supplemental support according to claim 3, it is characterized in that: described the first base plate (320) is provided with the first lightening hole (322), the center of described first top board (310) is provided with the second lightening hole (312), the center of described second base plate (420) is provided with the 3rd lightening hole (422), described side plate (330) is provided with the 4th lightening hole (331), and the upper face of described first gusset (340) is provided with the U-shaped breach (341) for dodging Guide column component.
7. forklift steering bridge strength test supplemental support according to claim 2, it is characterized in that: described Guide column component (500) comprises the guide pillar (510) arranged in vertical, the guide pin bushing (520) matched with guide pillar (510) and the supporting screw (530) being arranged on guide pillar (510) upper end, described guide pillar (510) comprises guide pillar body (511) and is arranged on the nut (512) of guide pillar body (511) upper end, described guide pillar body (511) is through guide pin bushing (520) and the first top board (310), described guide pillar body (511) is Step Shaft, comprise the enlarged diameter section being positioned at top and the reduced diameter section being positioned at below, described reduced diameter section is provided with screw thread, described enlarged diameter section is arranged with spring (540), one end of spring (540) is resisted against on nut (512), the other end of spring (540) is resisted against guide pin bushing (520) upper end, the enlarged diameter section that described guide pillar body (511) is positioned at guide pin bushing (520) is provided with the lining (550) matched with guide pin bushing (520) inwall, the top of described guide pillar (510) is provided with the first threaded hole (513) matched with supporting screw (530).
8. forklift steering bridge strength test supplemental support according to claim 7, it is characterized in that: described guide pin bushing (520) comprises the sleeve (521) matched with guide pillar body (511) and the ring flange (522) being arranged on sleeve (521) lower end, the inwall at sleeve (521) two ends is provided with the lining mounting groove for mounting bush (550), and ring flange (522) is connected by screw with the first top board (310).
9. forklift steering bridge strength test supplemental support according to claim 7, it is characterized in that: described the first top board (310) is provided with the circular hole (313) matched with guide pin bushing (520), four second threaded holes (314) being circumferentially with fixing guide pin bushing (520) of described circular hole (313).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510527866.2A CN105067283B (en) | 2015-08-24 | 2015-08-24 | Forklift steering bridge strength test Auxiliary support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510527866.2A CN105067283B (en) | 2015-08-24 | 2015-08-24 | Forklift steering bridge strength test Auxiliary support |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105067283A true CN105067283A (en) | 2015-11-18 |
| CN105067283B CN105067283B (en) | 2017-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510527866.2A Active CN105067283B (en) | 2015-08-24 | 2015-08-24 | Forklift steering bridge strength test Auxiliary support |
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| CN (1) | CN105067283B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110836765A (en) * | 2019-10-25 | 2020-02-25 | 安徽合力股份有限公司 | Test device for fatigue strength of forklift frame |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001171324A (en) * | 1999-12-14 | 2001-06-26 | Mitsubishi Heavy Ind Ltd | Suspension device and industrial vehicle provided with it |
| CN204128813U (en) * | 2014-07-14 | 2015-01-28 | 杭叉集团股份有限公司 | Driving axle of forklift certification test device |
| CN204439381U (en) * | 2015-03-23 | 2015-07-01 | 安徽合力股份有限公司 | A kind of heavy forklift steering cylinder fail-test stand |
| CN204903179U (en) * | 2015-08-24 | 2015-12-23 | 安徽合力股份有限公司 | Forklift steering bridge pressure test auxiliary stay |
-
2015
- 2015-08-24 CN CN201510527866.2A patent/CN105067283B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001171324A (en) * | 1999-12-14 | 2001-06-26 | Mitsubishi Heavy Ind Ltd | Suspension device and industrial vehicle provided with it |
| CN204128813U (en) * | 2014-07-14 | 2015-01-28 | 杭叉集团股份有限公司 | Driving axle of forklift certification test device |
| CN204439381U (en) * | 2015-03-23 | 2015-07-01 | 安徽合力股份有限公司 | A kind of heavy forklift steering cylinder fail-test stand |
| CN204903179U (en) * | 2015-08-24 | 2015-12-23 | 安徽合力股份有限公司 | Forklift steering bridge pressure test auxiliary stay |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110836765A (en) * | 2019-10-25 | 2020-02-25 | 安徽合力股份有限公司 | Test device for fatigue strength of forklift frame |
| CN110836765B (en) * | 2019-10-25 | 2024-05-31 | 安徽合力股份有限公司 | Test device for fatigue strength of forklift frame |
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| Publication number | Publication date |
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| CN105067283B (en) | 2017-10-24 |
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