CN220320000U

CN220320000U - Oil cylinder and loader

Info

Publication number: CN220320000U
Application number: CN202321976886.4U
Authority: CN
Inventors: 张涛涛; 刘静; 上官琪; 刘波; 黄胤真; 闫位杰; 张旭
Original assignee: Guangxi Liugong Machinery Co Ltd
Current assignee: Guangxi Liugong Machinery Co Ltd
Priority date: 2023-07-26
Filing date: 2023-07-26
Publication date: 2024-01-09
Anticipated expiration: 2033-07-26

Abstract

The utility model relates to a loader, and in order to solve the problem of inconvenient installation of a safety device for preventing a movable arm from falling down on the loader, the utility model constructs an oil cylinder and the loader, wherein the oil cylinder comprises a cylinder barrel, a piston rod, a support rod arranged in parallel with the piston rod, and a support seat fixed on the cylinder barrel, wherein the second end of the support rod is connected with a rod head of the piston rod, a first support fixing hole is arranged on the support seat, and the first end of the support rod can be detachably and fixedly connected with the support seat through a bolt or a pin shaft matched with the first support fixing hole when the piston rod stretches out. According to the utility model, the operation of manually carrying, lifting and the like on the supporting rod is not needed, and the operation of limiting the retraction of the piston rod is simple, convenient and safe.

Description

Oil cylinder and loader

Technical Field

The present utility model relates to a loader, and more particularly, to an oil cylinder and a loader.

Background

The boom of a loader is lifted by a boom cylinder and in special situations such as product display or product repair, the boom needs to be lifted and held for a long period of time, during which the boom is slowly lowered or suddenly lowered due to leakage of a valve or bursting of a pipeline. In order to avoid this, safety devices are arranged on the loader to prevent the lowering caused by the leakage or unloading of the oil passage of the boom cylinder. The existing safety device is formed by connecting a U-shaped supporting plate capable of covering a piston rod of a movable arm oil cylinder or two U-shaped supporting plates through bolts, and the sleeve capable of covering the piston rod of the movable arm oil cylinder is formed.

The existing safety device is made of steel plates, the weight of the existing safety device is usually large, and the safety device is fixedly sleeved on a piston rod of a movable arm oil cylinder by manpower after the movable arm is lifted. Because the safety device is heavy in weight, and after the movable arm is lifted, the height of the piston rod of the movable arm cylinder from the ground is large, the safety device is installed at a high place, the safety device is manually lifted and installed to be more laborious for operators, and even the risk of falling of the safety device exists in the installation process.

Disclosure of Invention

The utility model aims to solve the technical problem that a safety device for preventing a movable arm from falling down on a loader is inconvenient to install, and provides an oil cylinder and the loader, so that the movable arm is prevented from falling down after a movable arm of the loader is lifted conveniently.

The technical scheme for achieving the purpose of the utility model is as follows: the cylinder comprises a cylinder barrel, a piston rod, a supporting rod arranged in parallel with the piston rod, and a supporting seat fixed on the cylinder barrel, wherein the second end of the supporting rod is connected with a rod head of the piston rod, a first supporting fixing hole is formed in the supporting seat, and the first end of the supporting rod can be detachably and fixedly connected with the supporting seat through a bolt or a pin shaft matched with the first supporting fixing hole when the piston rod stretches out.

In the utility model, when the retraction of the cylinder is limited after the cylinder is required to extend, the second end of the supporting rod is fixedly connected with the rod head before the cylinder extends, the piston rod stretches out and drives the supporting rod to move, and after the piston rod stretches out in place, the second end of the supporting rod is connected with the supporting seat on the cylinder barrel, and at the moment, the piston rod is rigidly connected and supported with the cylinder barrel through the supporting rod, so that the retraction of the piston rod is limited. According to the utility model, the operation of manually carrying and lifting the supporting rod is not needed, and the operation of limiting the retraction of the piston rod is simple, convenient and safe.

In the oil cylinder, the second end of the supporting rod is detachably and fixedly connected with the rod head, the supporting seat is provided with a fixing structure for fixing the supporting rod, and the fixing structure can fix the supporting rod after the supporting rod is disconnected with the rod head. When the piston rod of the oil cylinder needs to stretch normally, the connection between the support rod and the rod head can be disconnected, and the support rod is fixed on the cylinder barrel through a fixing structure.

In the oil cylinder, the fixing structure comprises a groove structure arranged in the supporting seat, the length direction of the groove structure is axially parallel to the piston rod, the supporting rod is positioned in the groove of the groove structure and can slide in the groove, and the first supporting fixing hole is positioned at the end part of the groove structure, which is close to the cylinder cover of the cylinder barrel.

In the oil cylinder, the fixing structure further comprises a first fixing hole arranged on the supporting seat, the first fixing hole is located at the second end of the groove structure, and the first fixing hole can be detachably and fixedly connected with the first end of the supporting rod through a pin shaft or a bolt. Under the condition that the piston rod is not fixed, the first end of the supporting rod can be fixed through the first fixing hole.

In the oil cylinder, a plurality of second support fixing holes which can be detachably and fixedly connected with the first end of the support rod through pin shafts or bolts are arranged at intervals along the length direction of the groove structure. The corresponding second support fixing hole can be selected to be connected with the second end of the support rod according to the extension length of the piston rod, so that the cylinder can fix the piston rod under the condition of different extension lengths.

In the oil cylinder, the supporting seat is provided with a second fixing hole which can be detachably and fixedly connected with the second end of the supporting rod through a bolt or a pin shaft. Under the condition that the piston rod is not fixed, the two ends of the supporting rod can be fixed through the first fixing hole and the second fixing hole.

In the oil cylinder of the utility model, the fixing structure can also be formed by a first fixing hole which is arranged on the supporting seat and can be detachably and fixedly connected with the first end of the supporting rod through a bolt or a pin shaft, a second fixing hole which can be detachably and fixedly connected with the second end of the supporting rod through a bolt or a pin shaft, and a corresponding bolt or pin shaft.

In the oil cylinder, the second end of the supporting rod is fixedly connected with the rod head; the support seat is provided with a plurality of first support fixing holes which can be detachably and fixedly connected with the first end of the support rod through pin shafts, and the first support fixing holes and each first support fixing hole are distributed at intervals along the moving direction of the first end of the support rod. Under the condition that the piston rod is not fixed, the connection between the support rod and the support seat is disconnected, and the support rod stretches and contracts along with the piston rod to move.

The technical scheme for achieving the purpose of the utility model is as follows: the cylinder comprises a cylinder barrel, a piston rod, a supporting seat and a fixing seat, wherein the supporting seat and the fixing seat are fixed on the cylinder barrel, a first end of the supporting rod is rotatably connected with the supporting seat through a pin shaft, and a second end of the supporting rod can be detachably and fixedly connected with a rod head of the piston rod or the fixing seat. Under the condition that the piston rod is not fixed, the second end of the supporting rod is fixedly connected with a fixed seat fixed on the cylinder barrel; when the extended piston rod is required to be fixed, after the piston rod is extended, the fixed connection between the support rod and the fixed seat is disconnected, the support rod is turned around the connecting pin shaft at the first end, and the second end of the support rod is fixedly connected with the rod head of the piston rod, so that the piston rod is fixed. The connection between the support rod and the rod head can be detachable and fixedly connected through a pin shaft or a bolt, or the second end of the support rod can be inserted into a clamping groove on the rod head in an axial relative movement manner, or clamped into the clamping groove in a transverse direction perpendicular to the axial direction of the piston rod. The second end of the supporting rod is connected with the fixed seat through a bolt or a pin shaft. In the fixed mode of this piston rod, the first end of bracing piece rotates through round pin axle and supporting seat to be connected, and when overturning the bracing piece, the bracing piece only has a degree of freedom, and the upset operation of bracing piece is comparatively convenient, and can not take place the risk that the bracing piece falls, convenient operation is simple safe.

The technical scheme for achieving the purpose of the utility model is as follows: a loader is constructed, and a movable arm oil cylinder of the loader is the oil cylinder.

Compared with the prior art, the oil cylinder is arranged on the loader, and when the piston rod is required to be fixed after the movable arm is lifted, the operation is convenient, simple, labor-saving and safe.

Drawings

Fig. 1 is a schematic structural view of an oil cylinder according to the present utility model.

Fig. 2 is a schematic cross-sectional view of the cylinder barrel of the oil cylinder according to the present utility model.

Fig. 3 is a schematic side view of the cylinder barrel of the oil cylinder according to the present utility model.

Fig. 4 is a schematic structural view of another embodiment of the oil cylinder of the present utility model.

Fig. 5 is a schematic structural view of the loader of the present utility model in which a piston rod of a boom cylinder is fixed after the boom is lifted.

Part names and serial numbers in the figure:

cylinder tube 10, cylinder head 11, cylinder head 12, supporting seat 20, first support fixed hole 21, first fixed hole 22, second support fixed hole 23, fixing base 24, support rod 30, pin shaft 31, connecting hole 32, second pin hole 33, piston rod 40, head 41, arm 50, front frame 51, arm cylinder 52.

Detailed Description

The following describes specific embodiments with reference to the drawings.

Embodiment one.

Fig. 1 to 3 show the structure of a cylinder in an embodiment of the present utility model.

As shown in fig. 1, the oil cylinder comprises a cylinder barrel 10 and a piston rod 40, wherein the two ends of the cylinder barrel 10 are respectively provided with a cylinder head 11 and a cylinder cover 12, and the piston rod 40 extends out from the cylinder cover 12.

As shown in fig. 2 and 3, a support base 20 is fixedly provided on a side surface of the cylinder tube 10, and the support base 20 is a groove-shaped rail, and a longitudinal direction thereof is parallel to an axial direction of the cylinder tube 10. A first support fixing hole 21 and a first fixing hole 22 are respectively provided at both ends of the support base 20, the first support fixing hole 21 is adjacent to the end of the cylinder head 12 on the support base 20, and the first fixing hole 22 is adjacent to the end of the cylinder head 11 on the support base 20. The support base 20 is provided with a plurality of second support fixing holes 23 between the first support fixing holes 21 and the first fixing holes 22, and the plurality of second support fixing holes 23 are arranged on the support base 20 at intervals along the length direction of the groove.

As shown in fig. 1, the support bar 30 is mounted on the support base 20, and a first end of the support bar 30 is positioned in a groove of the support base 20 and is capable of sliding in the groove of the support base 20 when the support bar 30 is not fixed.

The first end of the support bar 30 is provided with a first pin hole (not shown) into which a pin or bolt can be inserted such that the first end of the support bar 30 is coupled to the first support fixing hole 21 on the support base 20, or to one of the second support fixing holes 23, or to the first fixing hole 22 by the pin or bolt.

The second end of the support bar 30 is provided with a connection hole 32, and a bolt or a pin shaft may be inserted into the connection hole 32. The rod head 41 of the piston rod 40 is also provided with a connecting hole, and when the connecting hole 32 at the second end of the supporting rod 30 is coaxially aligned with the connecting hole on the rod head, a bolt or a pin 31 can be inserted into the connecting hole to connect the supporting rod 30 with the rod head 41. Upon removal of the bolt or pin 31, the second end of the brace 30 is disconnected from the club head 41.

In this embodiment, when the oil cylinder needs to normally stretch, the support rod 30 is located in the groove of the support base 20, the first end of the support rod is connected to the first fixing hole 22 through the pin shaft or the bolt, the connection between the second end of the support rod 30 and the rod head 41 of the piston rod 40 is released, and the piston rod of the oil cylinder can freely stretch.

When the extension length of the oil cylinder needs to be maintained after the oil cylinder is extended, the connection between the first end of the support rod 30 and the first fixing hole 22 on the support base 20 can be released before the oil cylinder is extended (the piston rod 40 is in a completely retracted state), and when the connecting hole 32 on the support rod 30 is aligned with the connecting hole on the club head 41, the pin shaft 31 or the bolt is inserted into the connecting hole, so that the second end of the support rod 30 is fixedly connected with the club head 41. After the second end of the support rod 30 is fixedly connected with the rod head 41, the piston rod 40 extends out and drives the support rod 30 to pull out from the groove of the support base 20, when the piston rod 40 extends out to a predetermined length, the first pin hole at the first end of the support rod 30 is aligned with one of the first support fixing hole 21 or the second support fixing hole 23, and a bolt or a pin shaft is inserted into the aligned hole to fixedly connect the first end of the support rod 30 with the support base 20. The two ends of the supporting rod 30 are rigidly connected with the rod heads 41 and the supporting seat 20, so that the piston rod 40 is fixed relative to the cylinder barrel 10, and the piston rod 40 cannot retract relative to the cylinder barrel 10, thereby ensuring that the piston rod 40 automatically retracts due to leakage or unloading of a large-cavity oil way of the oil cylinder after the oil cylinder is extended, and the parts lifted by the oil cylinder cannot descend to keep safety.

When the free expansion and contraction of the piston rod needs to be restored, the connection between the first end of the support rod 30 and the first support fixing hole 21 is released, the bolt or the pin shaft 31 connecting the support rod 30 and the rod head 41 is taken out when the piston rod 40 is in the completely retracted state, the connection between the support rod 30 and the rod head 41 is released, the bolt or the pin shaft is inserted into the first pin hole of the first end of the support rod 30, and the first end of the support rod 30 is fixedly connected to the first fixing hole 22 on the support base 20.

In the present embodiment, the bolt or pin between the support rod 30 and the rod head 41 and the support base 20 is inserted and removed by the telescopic fixing and fixing releasing operations of the support rod 30 to the piston rod 40, which is simple, convenient, labor-saving and safe.

In some embodiments, when the support rod 30 is not connected to the club head 41, in order to better fix the support rod 30, a second pin hole 33 is provided at the second end of the support rod 30, a second fixing hole (not shown in the drawing) is provided on the support base 20, and when the first pin hole on the support rod 30 is coaxially aligned with the first fixing hole 22 on the support base 20, the second pin hole 33 on the support rod 30 is coaxially aligned with the second fixing hole on the support base 20, and a pin shaft 31 or a bolt is inserted into the coaxially aligned second pin hole 33 and second fixing hole to fix the second end of the support rod 30 to the support base 20. Both ends of the supporting rod 30 are connected with the supporting seat 20 through pin shafts or bolts, so that the supporting rod 30 can be better fixed, and noise generated by vibration due to machine shake during the working of a machine installed by an oil cylinder can be avoided.

In some embodiments, the second support fixing hole 23 is not provided on the support base 20, and the support base 20 is used for connecting with the first end of the support rod 30 when the piston rod 40 is fully extended, or connecting and fixing the first end and the second end of the support rod 30 when the piston rod 40 is not constrained. In a preferred embodiment, the portion where the first fixing hole 22 is provided forms a fixing seat independently of the support base 20 and is fixed to the cylinder 10, and is spaced apart from the support base 20 where the first support fixing hole 21 is provided on the cylinder 10.

In this embodiment, the second end of the support rod 30 is detachably and fixedly connected with the club head 41 through the pin shaft 31 or the bolt, and in some other embodiments, the second end of the support rod 30 may also be detachably connected with the club head 41 through other manners, for example, a clamping groove is formed on the club head 41 and the second end of the support rod 30 can be inserted into the clamping groove on the club head, or the second end of the support rod 30 can be axially (to be retracted by matching with the oil cylinder) or transversely (perpendicular to the axial direction of the piston rod 40) clamped into the clamping groove when the support rod 30 is connected with the club head 41.

Embodiment two.

The present embodiment also provides another cylinder, in which, as shown in fig. 4, the cylinder includes a cylinder 10 and a piston rod 40, two ends of the cylinder 10 are a cylinder head 11 and a cylinder cover 12, respectively, and the piston rod 40 extends from the cylinder cover 12.

A support base 20 and a fixing base 24 are fixedly provided on the cylinder tube 10, wherein the support base 20 is arranged at a position close to the cylinder head 12, and the fixing base 24 is arranged at a position close to the cylinder head.

The first end of the supporting rod 30 is rotatably connected to the supporting seat 20 through a pin shaft, the supporting rod 30 can be turned around the pin shaft towards the cylinder head 11 or turned towards the direction pointed by the rod head 41 of the piston rod, and the second end of the supporting rod 30 can be detachably and fixedly connected to the rod head 41 or the fixing seat 24 through a pin shaft or a bolt. When the cylinder rod is fully extended and needs to be fixed, the support rod 30 is turned over so that the second end of the support rod is detachably and fixedly connected with the rod head 41 through a bolt or a pin shaft. When the piston rod 40 is required to be freely extended and contracted, after the connection between the support rod 30 and the rod head 41 is released, the support rod is turned 180 degrees, so that the second end of the support rod 30 is fixed on the fixing seat 24 through a pin shaft or a bolt.

In the present embodiment, during the operation of fixing the piston rod 40 and releasing the fixing of the piston rod 40, the support rod 30 needs to be turned over. However, the support rod 30 is rotatably connected to the support base 20 through a pin, the degree of freedom is one, the overturning operation is simple and easy to realize, and the safety risk of falling the support rod 30 does not exist.

Embodiment three.

The present embodiment provides a loader, as shown in fig. 5, in which two ends of a boom cylinder 52 of the loader are hinged to a boom 50 and a front frame 51 through pins, respectively. In the present embodiment, the boom cylinder 52 is the cylinder in the first embodiment, or the cylinder in the second embodiment. When the boom 50 is lifted by the boom cylinder 52 and needs to be maintained for a long time or the boom cylinder oil path needs to be maintained, the piston rod 40 can be locked by using the support rod 30, so that the boom cylinder 52 can be prevented from being slowly retracted due to oil leakage or suddenly lowered due to unloading of a large cavity of the boom cylinder.

Claims

1. The utility model provides an hydro-cylinder, includes cylinder and piston rod, its characterized in that still includes with piston rod parallel arrangement's bracing piece, is fixed in the supporting seat on the cylinder, the second end of bracing piece with the pole head of piston rod is connected, be provided with first support fixed orifices on the supporting seat, the first end of bracing piece can pass through with first support fixed orifices complex bolt or round pin axle with supporting seat can dismantle fixed connection when the piston rod stretches out.

2. The cylinder of claim 1, wherein the second end of the support rod is detachably and fixedly connected to the club head, and the support base is provided with a fixing structure for fixing the support rod, and the fixing structure can fix the support rod after the support rod is disconnected from the club head.

3. The cylinder according to claim 2, wherein the fixing structure includes a groove structure provided in the support base, a length direction of the groove structure is axially parallel to the piston rod, the support rod is located in the groove of the groove structure and is capable of sliding in the groove, and the first support fixing hole is located at an end of the groove structure near the cylinder head of the cylinder tube.

4. The cylinder of claim 3, wherein the fixing structure further comprises a first fixing hole formed in the support base, the first fixing hole being located at the second end of the groove structure, and the first fixing hole being detachably and fixedly connected to the first end of the support rod through a pin or a bolt.

5. The cylinder as set forth in claim 4, wherein a plurality of second support fixing holes are provided at intervals along the length direction of the groove structure, and detachably and fixedly connected with the first end of the support rod through pins or bolts.

6. The cylinder of claim 4, wherein the support base is provided with a second fixing hole detachably and fixedly connected with the second end of the support rod through a bolt or a pin.

7. The cylinder of claim 2, wherein the fixing structure comprises a first fixing hole formed in the support base and detachably and fixedly connected to the first end of the support rod through a bolt or a pin, and a second fixing hole detachably and fixedly connected to the second end of the support rod through a bolt or a pin.

8. The cylinder of claim 1, wherein the second end of the support rod is fixedly connected to the head; the support seat is provided with a plurality of first support fixing holes which can be detachably and fixedly connected with the first end of the support rod through pin shafts, and the first support fixing holes and each first support fixing hole are distributed at intervals along the moving direction of the first end of the support rod.

9. The utility model provides an hydro-cylinder, includes cylinder and piston rod, its characterized in that still includes the bracing piece, is fixed in supporting seat and fixing base on the cylinder, the first end of bracing piece pass through the round pin axle with the supporting seat rotates to be connected, the second end of bracing piece can with the pole head of piston rod or with fixing base detachable fixed connection.

10. A loader, characterized in that a boom cylinder of the loader is the cylinder according to any one of claims 1 to 9.