CN218839101U

CN218839101U - Leaf spring cover, suspension and operation machinery

Info

Publication number: CN218839101U
Application number: CN202320082083.8U
Authority: CN
Inventors: 蒋俊平
Original assignee: Hunan Xingbida Netlink Technology Co Ltd
Current assignee: Hunan Xingbida Netlink Technology Co Ltd
Priority date: 2023-01-11
Filing date: 2023-01-11
Publication date: 2023-04-11
Anticipated expiration: 2033-01-11

Abstract

The utility model relates to a shock mitigation system technical field provides a leaf spring cover, suspension and operation machinery for fix the axle in the wherein one end of leaf spring, including upper cover, backing plate and the bottom plate that from top to bottom sets gradually. The upper cover is arranged at the top of one end of the plate spring during installation, the base plate is arranged between the bottom of the plate spring and the top of the axle, the lower supporting plate is arranged at the bottom of the axle, and then the upper cover, the base plate and the lower supporting plate are fastened by using fasteners, so that the upper cover and the base plate are clamped on the upper side and the lower side of the end part of the plate spring, and the base plate and the lower supporting plate are clamped on the upper side and the lower side of the axle. Compare with the leaf spring cover among the correlation technique, the leaf spring cover that this application provided has increased the backing plate, and the setting of backing plate has increased the area of contact of leaf spring with the leaf spring cover, reduces the unit atress of leaf spring cover to this reaches extension leaf spring cover life's effect.

Description

Leaf spring cover, suspension and operation machinery

Technical Field

The utility model relates to a shock mitigation system technical field especially relates to a leaf spring cover, suspension and operation machinery.

Background

The plate spring is an elastic element which is most widely applied in automobile suspensions, and is an elastic beam which is approximately equal in strength and formed by combining a plurality of spring pieces which are equal in width but unequal in length.

In the single-point suspension diaxon trailer on the existing market, the middle top of leaf spring is connected with the bottom of trailer, and both ends are connected with the axle through the leaf spring cover respectively around the leaf spring. The existing plate spring sleeve comprises an upper cover and a lower supporting plate, wherein the upper cover and the lower supporting plate are respectively arranged at the top of a plate spring and the bottom of an axle and are fixedly connected through a U-shaped spring, and after the connection, the plate spring and the axle are fixed together.

In a reinforced bad road test, the plate spring sleeve cracks when the vehicle is driven for a short distance, for example, the plate spring sleeve cracks for about three hundred kilometers in the reinforced bad road test with the reinforcing coefficient of 285. Leaf spring cover fracture can cause the leaf spring to shift, and then cause the axle to shift, and axle shift can lead to the axle wearing and tearing tire, can lead to the tire to blow out seriously. However, the replacement of the plate spring sleeve requires a long time, which greatly affects the test efficiency, and the cost of the plate spring sleeve is high, which also increases the test cost.

Therefore, how to solve the problem that the plate spring sleeve is easy to crack in the related art becomes a technical problem which needs to be solved urgently by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

The utility model provides a leaf spring cover, suspension and operation machinery for solve the defect that prior art medium plate spring cover is easy to split, realize extension leaf spring cover life's effect.

The utility model provides a leaf spring cover for fix the axle in the wherein one end of leaf spring, including upper cover, backing plate and the bottom plate that from top to bottom sets gradually, the upper cover the backing plate with the bottom plate passes through the fastener and connects, the upper cover with the backing plate is used for pressing from both sides tightly the leaf spring, the backing plate with the bottom plate is used for pressing from both sides tightly the axle.

According to the utility model provides a plate spring cover, the inside cavity of upper cover, just one of them one side of upper cover and the bottom of upper cover is opened, the tip of leaf spring passes through the open one side of upper cover is inserted in the upper cover, the upper cover be used for with the leaf spring compresses tightly on the backing plate.

According to the utility model provides a leaf spring cover, the tip of leaf spring is provided with the first stop part of bending downwards, on the backing plate with the position that the first stop part of leaf spring corresponds is provided with the first through-hole that supplies first stop part to pass, first through-hole is used for the restriction first stop part is followed the length direction motion of leaf spring.

According to the utility model provides a plate spring cover, the bottom of upper cover is close to the one end of the tip of plate spring is provided with downwardly extending's second stop part, on the backing plate with the position that second stop part corresponds is provided with the confession the second through-hole that second stop part passed, just the second through-hole with first through-hole intercommunication, first stop part presss from both sides tightly the second stop part with between the inner wall of first through-hole.

According to the utility model provides a plate spring sleeve, the upper cover is close to one side of the tip of leaf spring is provided with the gusset, just the gusset is located the outside of upper cover.

According to the utility model provides a plate spring cover, gusset downwardly extending to the outside of second stop part, just be provided with the confession on the backing plate the third through-hole that the gusset passed, the third through-hole with second through-hole intercommunication.

According to the utility model provides a leaf spring cover, the top of bottom plate is on a parallel with two avris of the axis of axle all are provided with the third stop part that upwards extends, two the third stop part stops both sides around the axle.

According to the utility model provides a plate spring cover, the bottom of upper cover is on a parallel with two sides of the length direction of plate spring all are provided with the flange, the fastener includes two U-shaped bolts, two the U-shaped bolt passes respectively the flange the edge of backing plate and the edge and the fastening of bottom plate, two the U-shaped bolt presss from both sides tightly is in both sides around the axle.

The utility model also provides a suspension, include as above the leaf spring cover.

The utility model also provides an operation machine, include as above the leaf spring cover or as above the suspension.

The utility model provides a leaf spring cover for fix the axle in the wherein one end of leaf spring, including upper cover, backing plate and the bottom plate that from top to bottom sets gradually. The upper cover is arranged at the top of one end of the plate spring during installation, the base plate is arranged between the bottom of the plate spring and the top of the axle, the lower supporting plate is arranged at the bottom of the axle, and then the upper cover, the base plate and the lower supporting plate are fastened by using fasteners, so that the upper cover and the base plate are clamped on the upper side and the lower side of the end part of the plate spring, and the base plate and the lower supporting plate are clamped on the upper side and the lower side of the axle. Compare with the leaf spring cover among the correlation technique, the leaf spring cover that this application provided has increased the backing plate, and the setting of backing plate has increased the area of contact of leaf spring with the leaf spring cover, reduces the unit atress of leaf spring cover to this reaches extension leaf spring cover life's effect.

Further, in the present invention, since the suspension and the working machine are provided with the plate spring housing as described above, the same advantages as described above can be obtained.

Drawings

In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of a connection structure of a plate spring and a plate spring sleeve provided by the present invention;

FIG. 2 is a cross-sectional view of the connection structure of the spring leaf and the base plate located at the lowest part of the plate spring provided by the present invention;

fig. 3 is an exploded view of a plate spring sleeve provided by the present invention;

reference numerals:

100. an upper cover; 110. a second blocking portion; 111. a first baffle; 112. a second baffle; 120. a rib plate; 130. a flange; 200. a base plate; 210. a first through hole; 220. a second through hole; 230. a third through hole; 300. a lower supporting plate; 310. a third barrier portion; 400. a plate spring; 410. a first blocking portion.

Detailed Description

To make the objects, technical solutions and advantages of the present invention clearer, the drawings in the present invention will be combined to clearly and completely describe the technical solutions of the present invention, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The leaf spring housing, the suspension, and the working machine of the present invention will be described below with reference to fig. 1 to 3.

In the related art, the suspension of the trailer mostly adopts a plate spring which is connected between the trailer body and the axle of the trailer, so that the damping effect is realized.

For the single-point suspension double-shaft trailer, the top of the middle position of the plate spring is connected with the trailer body of the trailer, and two ends of the plate spring are respectively connected with the axle through the plate spring sleeve.

At present, the plate spring sleeve mostly comprises an upper cover 100 and a lower support plate 300, the upper cover 100 is disposed on the top of one end of the plate spring 400, the lower support plate 300 is disposed on the bottom of the axle, the upper cover 100 and the lower support plate 300 are fastened and connected through fasteners such as U-shaped bolts, and the plate spring 400 and the axle are clamped between the upper cover 100 and the lower support plate 300, so that the plate spring 400 and the axle are fixed.

However, at this time, the contact area between the plate spring 400 and the upper cover 100 is small, and during the reinforced road damage test, the plate spring 400 is continuously elastically deformed, so that the plate spring 400 and the plate spring sleeve are continuously impacted, and the plate spring sleeve is cracked after being used for a period of time due to the small contact area. For example, when a reinforced bad road test with a reinforcing coefficient of 285 is performed, the plate spring sleeve may crack for about three hundred kilometers. The leaf spring 400 and the axle can be fixed after the leaf spring sleeve cracks, the leaf spring 400 and the axle can be caused to shift, the axle shifting can cause the axle to wear tires, and if the axle shifting is serious, the tires can be blown out.

When the plate spring sleeve cracks, the plate spring sleeve needs to be replaced. Longer time is needed to be consumed for replacing the plate spring sleeve, the test efficiency is greatly influenced, the cost of the plate spring sleeve is higher, and the test cost can be increased.

Therefore, the utility model provides a plate spring cover, this plate spring cover include upper cover 100, backing plate 200 and bottom plate 300, and upper cover 100, backing plate 200 and bottom plate 300 set gradually from top to bottom.

When it is required to couple the front end of the plate spring 400 to the axle, the upper cover 100 is disposed on the top of the front end of the plate spring 400, the pad plate 200 is disposed between the bottom of the front end of the plate spring 400 and the top of the axle, the lower plate 300 is disposed on the bottom of the axle, the upper cover 100, the pad plate 200, and the lower plate 300 are vertically aligned, and then the upper cover 100, the pad plate 200, and the lower plate 300 are coupled using fasteners. After attachment, the front end of the plate spring 400 is clamped between the upper cover 100 and the top of the pad 200, and the axle is clamped between the bottom of the pad 200 and the lower plate 300.

The application provides a leaf spring cover is different with present leaf spring cover has increased backing plate 200 between leaf spring 400 and axle, owing to set up backing plate 200, make the area of contact grow of leaf spring 400 and leaf spring cover, in the test process, leaf spring 400 constantly takes place elastic deformation, and then continuous impact leaf spring cover, because the area of contact grow of leaf spring 400 and leaf spring cover, consequently, the unit atress of leaf spring cover has been reduced, and then the life that makes the leaf spring cover can prolong.

In an embodiment of the present invention, the upper cover 100 may have a rectangular parallelepiped structure with a hollow interior, and one side and the bottom of the upper cover 100 are both open.

For example, the rear end and the bottom of the upper cover 100 of the plate spring housing provided at the front end of the plate spring 400 are opened, and when connected, the front end of the plate spring 400 is inserted into the upper cover 100 through the rear end of the upper cover 100 and contacts the pad 200 located under the upper cover 100 through the bottom of the upper cover 100.

The front end and the bottom of the upper cover 100 of the plate spring housing provided at the rear end of the plate spring 400 are opened, and when connected, the rear end of the plate spring 400 is inserted into the upper cover 100 through the front end of the upper cover 100 and contacts the pad 200 located below the upper cover 100 through the bottom of the upper cover 100.

When the upper cover 100, the pad 200, and the lower plate 300 are coupled using the fasteners, the end of the plate spring 400 is clamped between the top of the inner side of the upper cover 100 and the top of the pad 200.

The plate spring 400 is composed of a plurality of spring pieces having the same width but different lengths, and in the case of the single-point suspension type biaxial trailer, the top of the plate spring 400 is connected to the body of the trailer, and the spring piece located at the top is the shortest one, and the length of the spring pieces is sequentially increased from top to bottom.

In an embodiment of the present invention, an end portion of the spring plate located at the lowermost position may be bent downward, and the bent portion forms the first blocking portion 410. The pad plate 200 is provided with a first through hole 210 penetrating the pad plate 200 at a position corresponding to the first stopper 410, a width of the first through hole 210 in the left-right direction may be equal to a width of the plate spring 400, and a length of the first through hole 210 in the front-rear direction may be equal to a thickness of the plate spring. When mounting, the first blocking portion 410 of the spring plate is inserted into the first through hole 210, so that the first through hole 210 can limit the movement of the first blocking portion 410 in the front-rear direction, i.e., the relative movement of the plate spring 400 and the base plate 200 in the length direction of the plate spring 400, and further limit the relative movement of the plate spring case and the plate spring 400 in the length direction of the plate spring 400.

Taking the example that the rear end of the plate spring 400 is connected to the axle through the plate spring housing, the rear end of the spring leaf positioned at the lowest position is bent downward to form a first blocking portion 410, a first through hole 210 is provided at a position of the backing plate 200 close to the rear end of the backing plate 200, the width of the first through hole 210 in the left-right direction is equal to or slightly greater than the width of the first blocking portion 410, and the length of the first through hole 210 in the front-rear direction is equal to or slightly greater than the thickness of the first blocking portion 410. The first stopper 410 is inserted into the first through hole 210 when being installed.

In an embodiment of the present invention, a second blocking portion 110 extending downward is disposed at one end of the bottom of the upper cover 100 close to the end of the plate spring 400, a second through hole 220 for the second blocking portion 110 to pass is disposed at a position corresponding to the second blocking portion 110 on the base plate 200, the second through hole 220 is communicated with the first through hole 210, when the first blocking portion 410 is inserted into the first through hole 210, and the second blocking portion 110 is inserted into the second through hole 220, the second through hole 220 is used for limiting the movement of the second blocking portion 110 in the front-back direction, thereby limiting the relative movement between the upper cover 100 and the base plate 200. Meanwhile, the second stopper 110 and the first through hole 210 together restrict the movement of the first stopper 410 in the front and rear directions.

Taking the example where the rear end of the plate spring 400 is coupled to the axle through the plate spring housing, the second stopper 110 includes a rear first barrier 111 provided at the bottom of the upper cover 100 and second barriers 112 provided at both ends of the first barrier 111, the first barrier 111 extending downward and the second barriers 112 extending forward. The distance between the opposite sides of the two second shutters 112 is equal to the width of the plate spring 400, or the width of the first through hole 210. The width of the second through hole 220 is equal to the distance between two sides of the two second shutters 112 that are far away from each other. In this way, the positions where the first through hole 210 and the second through hole 220 communicate with each other form a stepped structure for restricting the movement of the second stopper 110 in the front-rear direction. The first stopper 410 may be installed in a through-hole structure formed by the second stopper 110 and the first through-hole 210, and the first stopper 410 is clamped between the first through-hole 210 and the second stopper 110.

In an embodiment of the present invention, a rib plate 120 is provided on an outer side of one side of the upper cover 100 near the end of the plate spring 400.

Taking a plate spring housing provided at the rear end of the plate spring 400 as an example, a rib plate 120 extending in a vertical direction is provided at the rear side of the upper cover 100 to reinforce the structural strength of the upper cover 100. When the plate spring 400 impacts backward the rear-side bottom of the upper cover 100, the bending strength of the upper cover 100 can be enhanced.

Further, the rib 120 may extend to the outside of the second barrier 110, that is, the first barrier 111, and the bottom of the rib 120 may be flush with the bottom of the first barrier 111, and at the same time, may serve to reinforce the structural strength of the second barrier 110, and may reinforce the bending strength of the first barrier 111 and the rear side of the upper cover 100 when the plate spring 400 impacts the first barrier 111 in the front-rear direction.

Since the second blocking portion 110 needs to be inserted into the second through hole 220, a third through hole 230 for the rib plate 120 to pass through needs to be arranged on one side of the second through hole 220 on the backing plate 200, which is far away from the first through hole 210, and the third through hole 230 is communicated with the second through hole 220. When the upper cover 100 is coupled to the pad plate 200, the bottom end of the rib plate 120 is inserted into the third through-hole 230.

In an embodiment of the present invention, the top of the bottom plate 300 is provided with third stoppers 310 extending upward along both sides of the front and rear direction, the top of the two third stoppers 310 and the bottom plate 300 forms a receiving groove for receiving the axle, and the two third stoppers 310 are stopped at both sides of the front and rear of the axle for limiting the relative movement of the axle and the plate spring 400 along the front and rear direction.

In an embodiment of the present invention, the bottom of the left and right sides of the upper cover 100 is provided with flanges 130 extending to both sides, two pairs of first bolt holes are provided on the two flanges 130 in the front-back direction, and the two first bolt holes in each pair are respectively provided on the two flanges 130. The distance between the two pairs of first bolt holes is equal to the width of the axle in the front-rear direction.

The width of the backing plate 200 in the left-right direction is equal to the distance between the two sides of the two flanges 130 that are away from each other, and a second bolt hole is provided in the backing plate 200 at a position corresponding to the first bolt hole.

A third bolt hole is provided in the third stopper 310 of the lower plate 300 at a position corresponding to the second bolt hole.

The fastener can be a U-shaped bolt and comprises a U-shaped bolt rod and a nut, when the U-shaped bolt rod is connected, two ends of the U-shaped bolt rod are aligned with one pair of first bolt holes and downwards sequentially penetrate through the first bolt holes, the second bolt holes and the third bolt holes, and the bottom of the third bolt hole is fastened through the nut.

When the two U-bolts connect the upper cover 100, the pad 200 and the lower plate 300, the two U-bolts are clamped at the front and rear sides of the axle.

The utility model discloses still provide a suspension, include as above the leaf spring cover, consequently have with as above the same advantage, here is no longer repeated.

The utility model also provides an operation machinery, operation machinery can be truck, cross country vehicle, hoist etc. owing to be provided with as above leaf spring cover or as above the suspension, consequently have with as above the same advantage, here is no longer repeated.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides a leaf spring cover for fix the axle in one of them one end of leaf spring (400), its characterized in that, including upper cover (100), backing plate (200) and bottom plate (300) that from top to bottom set gradually, upper cover (100) backing plate (200) with bottom plate (300) pass through the fastener and connect, upper cover (100) with backing plate (200) are used for pressing from both sides tightly leaf spring (400), backing plate (200) with bottom plate (300) are used for pressing from both sides tightly the axle.

2. The plate spring bushing according to claim 1, wherein the upper cover (100) is hollow inside, one side of the upper cover (100) and the bottom of the upper cover (100) are opened, the end of the plate spring (400) is inserted into the upper cover (100) through the opened side of the upper cover (100), and the upper cover (100) is used to press the plate spring (400) against the pad plate (200).

3. The plate spring bushing according to claim 2, wherein the end of the plate spring (400) is provided with a first stopper (410) bent downward, and the pad plate (200) is provided with a first through hole (210) through which the first stopper (410) passes at a position corresponding to the first stopper (410) of the plate spring (400), and the first through hole (210) is used for limiting the first stopper (410) from moving in the length direction of the plate spring (400).

4. The plate spring sleeve according to claim 3, wherein a second blocking portion (110) extending downwards is arranged at one end of the bottom of the upper cover (100) close to the end of the plate spring (400), a second through hole (220) for the second blocking portion (110) to pass through is arranged on the base plate (200) at a position corresponding to the second blocking portion (110), the second through hole (220) is communicated with the first through hole (210), and the first blocking portion (410) is clamped between the second blocking portion (110) and the inner wall of the first through hole (210).

5. The plate spring sleeve according to claim 4, characterized in that a rib plate (120) is arranged on one side of the end part of the upper cover (100) close to the plate spring (400), and the rib plate (120) is positioned on the outer side of the upper cover (100).

6. The plate spring sleeve according to claim 5, wherein the rib plate (120) extends downwards to the outer side of the second blocking portion (110), a third through hole (230) for the rib plate (120) to pass through is formed in the backing plate (200), and the third through hole (230) is communicated with the second through hole (220).

7. The plate spring sleeve according to any one of claims 1 to 6, wherein two sides of the top of the lower supporting plate (300), which are parallel to the axis of the axle, are provided with third blocking portions (310) extending upward, and the two third blocking portions (310) block the front and rear sides of the axle.

8. The plate spring bushing according to claim 1, wherein a flange (130) is provided on both sides of the bottom of the upper cover (100) parallel to the length direction of the plate spring (400), and the fastening member comprises two U-shaped bolts, which pass through the flange (130), the edge of the pad plate (200), and the edge of the lower plate (300) and are fastened, respectively, and are clamped on both front and rear sides of the axle.

9. A suspension comprising a leaf spring cover according to any one of claims 1 to 8.

10. A work machine comprising a leaf spring housing according to any one of claims 1 to 8 or a suspension according to claim 9.