CN218264040U

CN218264040U - Boom positioning device and work machine

Info

Publication number: CN218264040U
Application number: CN202222309952.4U
Authority: CN
Inventors: 杨传远; 李�雨; 李茂勤
Original assignee: Sany Heavy Machinery Ltd
Current assignee: Sany Heavy Machinery Ltd
Priority date: 2022-08-31
Filing date: 2022-08-31
Publication date: 2023-01-10
Anticipated expiration: 2032-08-31

Abstract

The utility model relates to a fixing device field provides a swing arm positioner and operation machinery, including safety lever and fixed subassembly. One end of the safety rod is rotatably connected with the frame body, and the fixing component can selectively fix the second end of the safety rod on the frame body or the movable arm. When the movable arm normally works, the second end of the safety rod is fixed on the frame body through the fixing assembly. When the starting arm needs to be lifted to overhaul the working machine, the fixing assembly is separated from the frame body, the second end of the safety rod is rotated to the position connected with the movable arm, the second end of the safety rod is fixed on the movable arm through the fixing assembly, the safety rod is supported between the movable arm and the frame body, and the situation that the movable arm accidentally descends can be effectively prevented. The utility model provides a safety lever among the movable arm positioner need not to leave in special toolbox, with its whole outside of tearing down and installing the telescopic link of hydro-cylinder when also need not to use, makes the convenient and fast more of use of safety lever.

Description

Boom positioning device and work machine

Technical Field

The utility model relates to a fixing device technical field especially relates to a swing arm positioner and operation machinery.

Background

When a working machine provided with a boom is overhauled, the boom often needs to be lifted, and if oil pipes for controlling the lifting of the boom return oil accidentally, the boom a1 automatically descends under the action of gravity, which is extremely dangerous for maintenance personnel. Therefore, in the related art, the safety lever a4 is usually manually placed outside the telescopic rod of the cylinder a2 for supporting the boom a1, so that the safety lever a4 is supported between the boom a1 and the cylinder of the cylinder a2, thereby effectively preventing the boom a1 from accidentally falling.

Taking a skid steer loader as an example, fig. 1 is a state when a boom a1 is lifted, fig. 2 is a schematic view when a safety lever a4 is disposed outside an expansion link when the skid steer loader is inspected, and fig. 3 is a schematic view of a structure of a conventional safety lever a 4.

In the prior art, the safety lever a4 is usually stored in a tool box and is taken out of the tool box during use, or the safety lever a4 is fixed on the vehicle frame a3 by using a screw and needs to be detached during use. Two kinds of above safety lever a4 accomodate the mode and overhaul complex operation, safety lever a4 installation is comparatively inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model provides a swing arm positioner and operation machinery for solve the fixed complex operation of swing arm among the prior art, the comparatively inconvenient defect of safety lever installation realizes the effect of supporting the safety lever between frame and swing arm with safety lever direct mount on the frame during use.

The utility model provides a swing arm fixing device, include: the first end of the safety rod is used for being rotatably connected with the frame body; a fixing assembly selectively fixing a second end of the safety lever to the frame body or the boom.

According to the utility model provides a swing arm positioner, the first end of safety lever with the support body is through first round pin hub connection, the one end that the round pin cap was kept away from to first round pin axle is provided with first axial mounting.

According to the utility model provides a swing arm positioner, fixed subassembly includes the second round pin axle, the one end that the round pin cap was kept away from to the second round pin axle is provided with second axial mounting.

According to the utility model provides a movable arm positioning device, first axial mounting with second axial mounting is jump ring or round pin.

According to the utility model provides a movable arm positioner, the round pin is cylindric lock, taper pin, grooved pin, split pin or spring catch.

According to the utility model provides a movable arm positioner still includes the reinforcement, the reinforcement sets up on the support body, just the reinforcement is located first round pin axle with the position that the support body is connected.

According to the utility model provides a movable arm positioning device, the reinforcement is first sleeve, first sleeve with support body fixed connection.

According to the utility model provides a movable arm positioner, fixed subassembly still includes the second sleeve, the second sleeve cover is established the second is sold epaxially, the second sleeve is located the round pin cap of second round pin axle with between the support body, perhaps be located the support body with between the safety lever, perhaps be located the safety lever with between the second axial mounting.

The utility model also provides an operation machine, including automobile body, swing arm and as above arbitrary the swing arm positioner, swing arm positioner's safety lever first end with the automobile body is articulated, the second end of safety lever through fixed subassembly selectable with the automobile body or the swing arm is connected.

According to the utility model provides an operating machine, be provided with on the swing arm be used for with the connecting hole that fixed subassembly is connected.

The utility model provides a movable arm positioning device, including safety lever and fixed subassembly. The first end of the safety lever is rotatably connected with the frame body, and the fixing assembly selectively fixes the second end of the safety lever to the frame body or the movable arm. When the movable arm normally works, the second end of the safety rod is fixed on the frame body through the fixing assembly, and the normal work of the movable arm is not influenced. When the starting arm needs to be lifted to overhaul the working machine, the fixing assembly is separated from the frame body, the second end of the safety rod is rotated to the position connected with the movable arm, the second end of the safety rod is fixed on the movable arm through the fixing assembly, the safety rod is supported between the movable arm and the frame body, and the condition that the movable arm accidentally descends can be effectively prevented. The utility model provides a safety lever among the movable arm positioner need not to leave in special toolbox, with its whole outside of tearing down and installing the telescopic link of hydro-cylinder when also need not to use, makes the convenient and fast more of use of safety lever.

The utility model provides an among the swing arm positioner, the first end and the support body of safety lever are through first round pin hub connection, and the one end of first round pin axle is provided with the round pin cap, and other end detachable is connected with first axial mounting, and the axial motion of first round pin axle can be restricted to round pin cap and first axial mounting, prevents that first round pin axle from taking off the round pin. The first axial fixing piece is detachably connected with the first pin shaft, and when the first axial fixing piece is installed or detached, the first axial fixing piece can be separated from the first pin shaft, so that the first pin shaft can be inserted into the safety rod and the support body or pulled out of the safety rod and the support body.

The utility model provides an among the swing arm positioner, fixed subassembly includes the second round pin axle, and the one end of second round pin axle is provided with the round pin cap, and other end detachable is connected with second axial mounting, and the axial motion of round pin cap and second axial mounting can restrict the second round pin axle prevents that the second round pin axle from taking off the round pin. The second axial fixing piece is detachably connected with the second pin shaft, so that the second end of the safety rod is conveniently released from the frame body or the movable arm, and the safety rod is convenient and fast to install and fix.

The utility model provides an still be provided with the reinforcement among the swing arm positioner, the reinforcement sets up on the support body, and is located the position that first round pin axle and support body are connected, sets up the reinforcement and can strengthen support body and first round pin hub connection's position, prevents that the safety bar from when supporting the swing arm, because the support body bears great, leads to the support body to warp.

Further, the present invention provides a working machine having the boom positioning device described above, and therefore having the same advantages as described above.

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 prior art normal state of a skid steer loader;

FIG. 2 is a schematic view of a prior art skid-steer loader in a service condition;

FIG. 3 is a schematic view of a prior art safety bar configuration;

FIG. 4 is a schematic view of a skid steer loader parking position provided by the present invention;

FIG. 5 is a schematic view of a skid steer loader maintenance condition provided by the present invention;

fig. 6 is an enlarged view of a portion a in fig. 5 according to the present invention;

fig. 7 is a schematic view of the connection structure of the safety rod and the wing plate provided by the present invention;

fig. 8 is an enlarged view of fig. 7 at B;

fig. 9 is a schematic structural diagram of a wing plate provided by the present invention;

fig. 10 is a schematic structural view of a safety bar provided by the present invention;

fig. 11 is a schematic view illustrating a connection structure of a first end of a safety lever according to the present invention;

fig. 12 is a schematic structural diagram of a first pin shaft provided in the present invention;

fig. 13 is a schematic view of the connection structure of the second end of the safety bar provided by the present invention;

fig. 14 is a schematic structural diagram of a second pin shaft provided by the present invention;

reference numerals:

a1, a movable arm; a2, an oil cylinder; a3, a frame; a4, a safety rod;

110. a movable arm; 120. a wing plate; 130. an oil cylinder; 210. a safety lever; 211. a first shaft hole; 212. a third shaft hole; 220. a first pin shaft; 221. a first sleeve; 222. an annular groove; 223. a clamp spring; 230. a second pin shaft; 231. a second sleeve; 232. a pin hole; 233. a spring pin; 240. a fifth shaft hole; 250. a second shaft hole; 260. and a fourth shaft hole.

Detailed Description

To make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention are combined to clearly and completely describe the technical solutions of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. 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 boom positioning apparatus and the working machine according to the present invention will be described with reference to fig. 4 to 14.

The utility model provides a swing arm positioner installs on the support body of the operation machinery that is provided with swing arm 110, and wherein, swing arm 110 rotates with the support body to be connected. When the movable arm 110 works normally, the movable arm positioning device is in a retracted state and is completely connected to the frame body, and when the movable arm 110 needs to be lifted to overhaul the working machine, the movable arm positioning device is supported between the frame body and the movable arm 110 and is used for positioning the lifted movable arm 110, so that the movable arm 110 is prevented from falling accidentally and personal injury to maintenance personnel is prevented.

The utility model provides a movable arm positioning device, including safety lever 210 and fixed subassembly. The first end of the safety lever 210 is rotatably coupled to the frame, and the fixing assembly may fix the second end of the safety lever 210 to the frame or fix the second end of the safety lever 210 to the boom 110.

For example, the boom positioning device may be installed on a skid steer loader, wings 120 may be provided on both sides of the skid steer loader, and the boom positioning device may be provided inside the wings 120.

The safety bar 210 may be a groove-shaped bar structure, a cylindrical bar structure, or a rectangular bar structure, as long as the bar structure can perform a bearing function.

Taking a rectangular bar-shaped structure as an example, a first shaft hole 211 penetrating safety bar 210 in the thickness direction of safety bar 210 may be provided at a first end of safety bar 210, and a second shaft hole 250 penetrating wing 120 may be provided in wing 120 of the skid steer loader.

When the safety rod 210 is installed, the first shaft hole 211 of the safety rod 210 is aligned with the second shaft hole 250 of the wing plate 120, the first pin shaft 220 is inserted from the outer side of the wing plate 120 and sequentially penetrates through the second shaft hole 250 and the first shaft hole 211, and a first axial fixing piece is arranged at one end of the first pin shaft 220, which is far away from the pin cap, namely the end located on the inner side of the wing plate 120, so that the safety rod 210 is prevented from being separated from the wing plate 120 due to accidental pin removal. Thus, the safety lever 210 is connected with the wing plate 120 through the first pin 220, and the rotary connection between the safety lever 210 and the wing plate 120 is realized.

In an embodiment of the present invention, the fixing component may include a second pin 230. A third shaft hole 212 penetrating the safety lever 210 in a thickness direction of the safety lever 210 is provided at a second end of the safety lever 210. A fourth shaft hole 260 penetrating the wing 120 is formed in the wing 120 of the skid steer loader, and the distance between the centers of the fourth shaft hole 260 and the second shaft hole 250 is equal to the distance between the centers of the first shaft hole 211 and the second shaft hole 250 of the safety lever 210, so that it is ensured that the third shaft hole 212 and the fourth shaft hole 260 can be aligned when the first shaft hole 211 and the second shaft hole 250 are aligned.

When the safety lever 210 is in the retracted state, the safety lever 210 is rotated around the first pin 220 to a position where the third shaft hole 212 is aligned with the fourth shaft hole 260, the second pin 230 is inserted from the outer side of the wing plate 120 and sequentially passes through the fourth shaft hole 260 and the third shaft hole 212, and a second axial fixing member is disposed at one end of the second pin 230, which is far away from the pin cap, that is, at one end of the inner side of the wing plate 120, so as to prevent the safety lever 210 from being separated from the wing plate 120 due to accidental pin removal. In this way, the effect of fixing the safety lever 210 inside the wing plate 120 is achieved.

In addition, a fifth shaft hole 240 extending in the left-right direction of the work machine needs to be provided in the boom 110, and when the work machine needs to be inspected, the boom 110 is first raised, the second axial fixing member is separated from the second pin shaft 230, and the second pin shaft 230 is pulled out from the third shaft hole 212 and the fourth shaft hole 260, so that the second end of the safety lever 210 is disconnected from the wing plate 120. Further rotating the safety lever 210 about the first pin 220 aligns the third shaft hole 212 of the safety lever 210 with the fifth shaft hole 240 of the boom 110, and then fixing the second end of the safety lever 210 to the boom 110 by passing the second pin 230 through the third shaft hole 212 and the fifth shaft hole 240. In this way, the safety lever 210 is supported between the boom 110 and the wing 120, and the boom 110 is prevented from being accidentally dropped.

In an embodiment of the present invention, the first axial fixing member may be a snap spring 223 or a pin.

The first pin 220 functions as a rotation shaft to rotatably connect the safety bar 210 to the frame body. Therefore, an annular groove 222 may be formed in one end of the first pin 220, which is far away from the pin cap, the first axial fixing member may be a snap spring 223, and the snap spring 223 may be sleeved in the annular groove 222, so that the snap spring 223 and the annular groove 222 are matched to prevent the first pin 220 from being axially dislocated.

The second axial fixing member may be a snap spring 223 or a pin.

The second pin 230 needs to be frequently inserted and removed to connect or disconnect the second end of the safety lever 210 to or from the frame or the boom 110. Accordingly, the second axial fixing member may use a pin for facilitating the coupling or decoupling with the second pin shaft 230. The pins may be cylindrical pins, conical pins, slotted pins, split pins, or spring pins 233, among others. Spring pins 233 are preferably used in embodiments of the present invention.

For example, a pin hole 232 is formed at an end of the second pin 230 away from the pin cap, an axis of the pin hole 232 is perpendicular to an axis of the second pin 230, and after the second pin 230 is inserted into the third shaft hole 212 and the fourth shaft hole 260, or the third shaft hole 212 and the fifth shaft hole 240, the spring pin 233 may be inserted into the pin hole 232 to prevent the second pin 230 from being accidentally removed. When the second pin 230 needs to be extracted, the spring pin 233 needs to be extracted from the pin hole 232 first.

In an embodiment of the present invention, when the boom positioning apparatus is used in a skid steer loader, since the wing 120 of the skid steer loader is thin, and when the weight of the boom 110 is transmitted to the wing 120 through the safety lever 210, the wing 120 needs to bear a large pressure, it is very easy to cause deformation or damage of the wing 120.

Therefore, in order to solve the above problem, a reinforcement may be provided at a position where the second shaft hole 250 is provided on the wing plate 120, and the reinforcement may be a reinforcement plate. A reinforcing plate may be welded to the outer side of the wing plate 120 with the second shaft hole 250 extending through the reinforcing plate to increase the load bearing strength of the wing plate 120 by increasing the thickness of the wing plate 120.

The reinforcing member may be the first sleeve 221, and the first sleeve 221 may be made of steel. One end of the first sleeve 221 is welded to the outside of the wing plate 120, and the axis of the first sleeve 221 is collinear with the axis of the second shaft bore 250. The preferred embodiment is that the inner diameter of the first sleeve 221 is equal to the inner diameter of the second shaft hole 250, and the first pin 220 can be effectively contacted with the first sleeve 221 when the first pin 220 passes through the first sleeve 221.

In an embodiment of the present invention, the fixing assembly may further include a second sleeve 231. Since the length of the second pin 230 is greater than the sum of the thicknesses of the wing plate 120 and the safety lever 210, when the second pin 230 fixes the second end of the safety lever 210 to the wing plate 120 and the working machine vibrates, the second end of the safety lever 210 may shake, generate noise when colliding with the wing plate 120, and even damage the wing plate 120, the safety lever 210, or the second pin 230.

Therefore, in order to solve the above problem, the fixing assembly further includes a second sleeve 231, the second sleeve 231 may be of rubber structure, and the length of the second sleeve 231 may be equal to or slightly greater than the distance between the side of the safety lever 210 away from the wing plate 120 and the side of the second axial fixing member close to the wing plate 120. During the use, can establish second sleeve 231 in the outside of second round pin axle 230, and be located between safety lever 210 and the second axial mounting, set up behind second sleeve 231, can compress tightly safety lever 210 on pterygoid lamina 120, prevent that safety lever 210 from taking place to rock. Meanwhile, the second sleeve 231 made of rubber can also play a role in shock absorption.

Or the second sleeve 231 may be further disposed between the cap of the second pin 230 and the frame body, or the second sleeve 231 may be further disposed between the frame body and the safety lever 210, which may also play a role in fixing the safety lever 210 and absorbing shock.

The utility model provides a swing arm positioner has effectively utilized the space of support body, with the direct rotatable connection of safety lever 210 on the support body, need not use special toolbox to accomodate. Connect safety lever 210 detachable on the support body among the prior art, pull down it during the use to the mode in the outside of installing the telescopic link of hydro-cylinder 130 compares, the utility model provides a movable arm positioner only needs plug second round pin axle 230, with safety lever 210 the second end connect support body or movable arm 110 can, during operation, safety lever 210 supports between movable arm 110 and support body, greatly reduced the operation degree of difficulty, also improved maintenance efficiency.

The utility model also provides an operation machine, this operation machine can be for skid-steer loader, hoist etc. are provided with the machinery of swing arm 110. The working machine includes a vehicle body, a boom 110, and a boom positioning device as described above, the boom 110 being pivotally connected to the vehicle body, a safety lever 210 of the boom positioning device having a first end hinged to the vehicle body and a second end selectively connected to the vehicle body or the boom 110 via a fixed member. For example, when the work machine is a skid steer loader, the safety lever 210 has a first end hinged to the wing 120 of the vehicle body and a second end selectively connected to the wing 120 or the boom 110 of the vehicle body through a fixed member. Since the work machine has the boom positioning device as described above, the same advantages as described above are obtained.

A connection hole for connecting to the fixed member is provided in the movable arm 110, and the connection hole is the fifth shaft hole 240.

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 the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art 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. A boom positioning apparatus, comprising:

the safety rod (210), the first end of the safety rod (210) is used for being rotatably connected with the rack body;

a fixing assembly selectively fixing a second end of the safety lever (210) to the frame body or the boom (110).

2. The movable arm positioning device according to claim 1, wherein a first end of the safety lever (210) is connected to the frame body through a first pin (220), a pin cap is disposed at one end of the first pin (220), a first axial fixing member is disposed at the other end of the first pin (220), and the first axial fixing member is detachably connected to the first pin (220).

3. The boom positioning device according to claim 2, characterized in that the fixing component comprises a second pin (230), one end of the second pin (230) is provided with a pin cap, and the other end of the second pin (230) is provided with a second axial fixing member, and the second axial fixing member is detachably connected with the second pin (230).

4. The boom positioning apparatus of claim 3, wherein the first and second axial mounts are snap springs (223) or pins.

5. The boom positioning apparatus of claim 4, wherein the pin is a cylindrical pin, a conical pin, a slotted pin, a split pin, or a spring pin.

6. The boom positioning apparatus as claimed in claim 2, further comprising a reinforcement member disposed on the frame body at a position where the first pin (220) is coupled to the frame body.

7. The boom positioning apparatus as claimed in claim 6, wherein the reinforcement member is a first sleeve (221), and the first sleeve (221) is fixedly connected with the frame body.

8. The boom positioning device as claimed in claim 3, wherein the fixing assembly further comprises a second sleeve (231), the second sleeve (231) is sleeved on the second pin shaft (230), and the second sleeve (231) is located between a pin cap of the second pin shaft (230) and the frame body, or located between the frame body and the safety lever (210), or located between the safety lever (210) and the second axial fixing member.

9. A working machine, characterized by comprising a vehicle body, a boom (110) and a boom positioning device according to any of claims 1-8, wherein a first end of a safety lever (210) of the boom positioning device is articulated with the vehicle body and a second end of the safety lever (210) is selectively connected with the vehicle body or the boom (110) by a fixed assembly.

10. The work machine according to claim 9, characterized in that the boom (110) is provided with a coupling hole for coupling with the fixed assembly.