Hydraulic oil cylinder for excavator

Abstract

The utility model discloses a hydraulic oil cylinder for an excavator. The hydraulic oil cylinder comprises a hydraulic oil cylinder body, a fixing mechanism and a protection mechanism, a hydraulic rod is mounted on the hydraulic oil cylinder body; the fixing mechanism is installed on the hydraulic rod and comprises a fixing plate, a plurality of pushing blocks are slidably connected to the fixing plate, clamping blocks are fixed to the pushing blocks, a groove is formed in the hydraulic rod, and protruding blocks are fixed to the pushing blocks; a plurality of sliding cavities are formed in the fixed plate; the protection mechanism is installed on the fixing plate and comprises a protection sleeve, a plurality of supporting rings are fixed to the protection sleeve, a plurality of supporting blocks are fixed to the fixing plate, supporting rods are fixed to the supporting blocks, and the supporting rods and the supporting rings are in sliding connection. Compared with the prior art, the hydraulic oil cylinder for the excavator can protect the hydraulic rod, so that the hydraulic rod is not prone to being scratched and abraded when stretching out, the interior of the hydraulic oil cylinder is not prone to leakage, and the hydraulic oil cylinder can keep stable operation.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic cylinders, and in particular relates to a hydraulic cylinder for an excavator. Background Art

[0002] The hydraulic cylinder of an excavator is a vital component of an excavator. The working principle of the hydraulic cylinder of an excavator is based on the hydraulic system, which is mainly composed of a hydraulic pump, hydraulic oil, a hydraulic control valve and a hydraulic cylinder. The hydraulic pump is the power source of the hydraulic system, responsible for sucking the hydraulic oil from the oil tank and increasing the pressure before delivering it to the hydraulic cylinder. The hydraulic cylinder is the actuator of the hydraulic system, which pushes the piston rod to move linearly through the pressure of the hydraulic oil to achieve various actions of the excavator.

[0003] In the prior art, the hydraulic rod on the hydraulic cylinder of the excavator needs to be extended and retracted during operation so as to control the movement of the excavator. However, the working environment of the excavator is relatively complex, so that the hydraulic rod of the hydraulic cylinder of the excavator is prone to collision with external debris when extended, resulting in scratches or wear on the telescopic rod. This makes it easy for the hydraulic rod to reduce the sealing effect inside the hydraulic cylinder of the excavator after it is retracted, resulting in leakage, affecting the working efficiency of the hydraulic cylinder of the excavator.

[0004] Therefore, in view of the above technical problems, it is necessary to provide a hydraulic cylinder for an excavator.

[0005] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0006] The utility model aims to provide a hydraulic oil cylinder for an excavator, which can be used to solve the problem that a hydraulic rod of the hydraulic oil cylinder is easily collided with external debris when being extended.

[0007] In order to achieve the above-mentioned purpose, a specific embodiment of the utility model provides a hydraulic cylinder for an excavator, comprising: a hydraulic cylinder body, a fixing mechanism and a protection mechanism;

[0008] A hydraulic rod is installed on the hydraulic cylinder body;

[0009] The fixing mechanism is installed on the hydraulic rod, and the fixing mechanism includes a fixing plate, and a plurality of pushing blocks are slidably connected to the fixing plate, and a clamping block is fixed on the pushing block, and a groove is cut on the hydraulic rod;

[0010] The protection mechanism is installed on the fixed plate, and the protection mechanism includes a protection sleeve, a plurality of support rings are fixed on the protection sleeve, a plurality of support blocks are fixed on the fixed plate, a support rod is fixed on the support block, and the support rod is slidably connected to the support ring.

[0011] In one or more embodiments of the present invention, a plurality of the pushing blocks are fixed with protrusions, and moving the protrusions can drive the pushing blocks to move.

[0012] In one or more embodiments of the present utility model, a plurality of sliding cavities are bored on the fixed plate, and the interior of the sliding cavities is used to place the pushing block and the fixing block.

[0013] In one or more embodiments of the present invention, a plurality of side walls of the sliding cavities are slidably connected with fixed blocks, and the fixed blocks are used to support the pushing blocks, so that the pushing blocks can be fixed.

[0014] In one or more embodiments of the utility model, a plurality of the fixing blocks are slidably connected with fixing bolts, the fixing bolts are threadedly connected to the fixing plate, and the fixing bolts can fix the fixing blocks on the fixing plate.

[0015] In one or more embodiments of the present invention, a plurality of side walls of the sliding cavities are provided with limiting grooves, and the limiting grooves are used to place limiting blocks inside and can support the limiting blocks.

[0016] In one or more embodiments of the utility model, a plurality of the limit grooves are slidably connected to the side walls with limit blocks, the limit blocks are fixedly connected to the push blocks, and the limit blocks are used to support the push blocks so that the push blocks are not easily dropped from the fixed plate.

[0017] In one or more embodiments of the present utility model, a fixing cylinder is fixed on the hydraulic cylinder body, and the fixing cylinder is slidably connected to the support rod, and the fixing cylinder is used to support the support rod.

[0018] In one or more embodiments of the utility model, a threaded rod is fixed to one end of each of the support rods, the threaded rod is used to support a nut and a baffle, and a nut is threadedly connected to the threaded rod, and the nut is used to fix the baffle.

[0019] In one or more embodiments of the present invention, a baffle is disposed on one side of each of the plurality of nuts, and the baffle can be supported on the fixing tube, so as to support one end of the support rod.

[0020] Compared with the prior art, the hydraulic oil cylinder for excavators of the utility model can protect the hydraulic rod, so that the hydraulic rod is not easily scratched and worn when extended, and the inside of the hydraulic oil cylinder is not easily leaked, so that the hydraulic oil cylinder can maintain stable operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 This is a three-dimensional diagram of a hydraulic cylinder for an excavator in one embodiment of the utility model;

[0023] Figure 2 It is a cross-sectional view of a hydraulic cylinder for an excavator in one embodiment of the utility model;

[0024] Figure 3 for Figure 2 A schematic diagram of the structure shown in FIG.

[0025] Figure 4 for Figure 2 Schematic diagram of the structure shown at B.

[0026] Description of main reference numerals:

[0027] 1-hydraulic cylinder body, 101-hydraulic rod, 2-fixing mechanism, 201-fixing plate, 202-pushing block, 203-block, 204-bump, 205-fixing block, 206-fixing bolt, 207-limiting groove, 208-limiting block, 3-protecting mechanism, 301-protective sleeve, 302-support ring, 303-support block, 304-support rod, 305-fixing cylinder, 306-threaded rod, 307-nut, 308-baffle. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0029] like Figures 1 to 4 As shown, a hydraulic cylinder for an excavator in one embodiment of the utility model comprises: a hydraulic cylinder body 1, a fixing mechanism 2 and a protection mechanism 3.

[0030] like Figure 1As shown, the hydraulic cylinder body 1 is used to control the hydraulic rod 101 to extend and retract. The hydraulic rod 101 is installed on the hydraulic cylinder body 1, and the hydraulic rod 101 can push the excavator to work by extending and retracting. The fixing mechanism 2 is installed on the hydraulic rod 101, and the fixing mechanism 2 includes a fixing plate 201, and the fixing plate 201 is used to support the pushing block 202, the supporting block 303 and one end of the protective cover 301.

[0031] like Figures 2 to 3 As shown, a plurality of push blocks 202 are slidably connected to the fixed plate 201, and the push blocks 202 are used to support the clamping blocks 203 and can drive the clamping blocks 203 to move. The clamping blocks 203 are fixed to the push blocks 202, and the clamping blocks 203 can be supported on the side walls of the groove, so that the fixed plate 201 can be fixed on the hydraulic rod 101. A groove is cut on the hydraulic rod 101, and the side walls of the groove can support the clamping blocks 203, so that the clamping blocks 203 can be fixed on the hydraulic rod 101.

[0032] like Figure 3 As shown, a plurality of push blocks 202 are all fixed with protrusions 204, and moving the protrusions 204 can drive the push blocks 202 to move. A plurality of sliding cavities are formed on the fixed plate 201, and the push blocks 202 and the fixed blocks 205 are placed inside the sliding cavities.

[0033] like Figure 3 As shown, the side walls of the plurality of sliding cavities are all slidably connected with fixed blocks 205, and the fixed blocks 205 are used to support the push block 202, so as to fix the push block 202. The plurality of fixed blocks 205 are all slidably connected with fixing bolts 206, and the fixing bolts 206 are threadedly connected to the fixing plate 201, and the fixing bolts 206 can fix the fixing blocks 205 on the fixing plate 201.

[0034] like Figure 3 As shown, the side walls of the plurality of sliding cavities are provided with limit grooves 207, and the limit blocks 208 are placed inside the limit grooves 207, and the limit blocks 208 can be supported. The side walls of the plurality of limit grooves 207 are slidably connected to the limit blocks 208, and the limit blocks 208 are fixedly connected to the push block 202, and the limit blocks 208 are used to support the push block 202, so that the push block 202 is not easy to fall off the fixed plate 201.

[0035] like Figure 1 As shown, the protection mechanism 3 is installed on the fixing plate 201, and the protection mechanism 3 includes a protection cover 301, which is used to protect the hydraulic rod 101 so that the hydraulic rod 101 is not easily bumped. A plurality of support rings 302 are fixed on the protection cover 301, and the support rings 302 can be supported on the support rod 304, so as to support the protection cover 301.

[0036] There are multiple folds on the protective cover 301 , and the multiple folds can be bent under the action of external force, so that the total length of the protective cover 301 can change with the extension and retraction of the hydraulic rod 101 .

[0037] like Figure 1 As shown, a plurality of support blocks 303 are fixed on the fixed plate 201, and the support blocks 303 can support the support rods 304. The support blocks 303 are fixed with support rods 304, and the support rods 304 are slidably connected with the support ring 302, and the support rods 304 can support the support ring 302 and constrain the movement trajectory of the support ring 302.

[0038] like Figures 1 to 4 As shown, a fixing cylinder 305 is fixed on the hydraulic cylinder body 1, and the fixing cylinder 305 is slidably connected with the support rod 304, and the fixing cylinder 305 is used to support the support rod 304. A threaded rod 306 is fixed at one end of each of the support rods 304, and the threaded rod 306 is used to support a nut 307 and a baffle 308.

[0039] like Figure 4 As shown, a nut 307 is threadedly connected to the threaded rod 306, and the nut 307 is used to fix the baffle 308. A baffle 308 is provided on one side of each of the nuts 307, and the baffle 308 can be supported on the fixing cylinder 305, so as to support one end of the support rod 304.

[0040] When in use, the protective cover 301 is sleeved on the hydraulic rod 101, and one end of the protective cover 301 is fixed on the hydraulic cylinder body 1, and the other end of the protective cover 301 is fixed on the fixing plate 201, and the fixing plate 201 is installed so that the multiple clamping blocks 203 can be aligned with the grooves, and the multiple pushing blocks 202 are pushed so that the pushing blocks 202 drive the clamping blocks 203 to move, so that the clamping blocks 203 can be supported on the side walls of the grooves, so that the fixing plate 201 can be fixed on the hydraulic rod 101;

[0041] Install multiple fixing blocks 205 and fixing bolts 206, the fixing bolts 206 can fix the fixing blocks 205 on the fixing plate 201, and the fixing blocks 205 can support the pushing blocks 202, so that the fixing blocks 205 can fix the pushing blocks 202 and the clamping blocks 203;

[0042] Make multiple support rods 304 pass through the fixing tube 305, and install multiple nuts 307 and baffles 308, so that the nuts 307 can fix the limit block 208 on the threaded rod 306, and the baffle 308 can be supported on the fixing tube 305, so as to limit one end of the support rod 304;

[0043] The hydraulic rod 101 can drive the fixed plate 201 to move during the extension and retraction process, and the fixed plate 201 can drive the protective cover 301 and multiple support blocks 303 and support rods 304 to move. The folds on the protective cover 301 can be bent under the drive of the fixed plate 201, so that the total length of the protective cover 301 can be changed, so that the protective cover 301 can protect the hydraulic rod 101, and the support rods 304 can support the support ring 302, thereby supporting the protective cover 301, so that the protective cover 301 can remain stable during the movement.

[0044] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0045] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A hydraulic cylinder for an excavator, characterized in that: include: A hydraulic cylinder body, on which a hydraulic rod is mounted; A fixing mechanism is installed on the hydraulic rod, the fixing mechanism comprises a fixing plate, a plurality of pushing blocks are slidably connected to the fixing plate, a clamping block is fixed on the pushing block, and a groove is cut on the hydraulic rod; The protection mechanism is installed on the fixed plate, and the protection mechanism includes a protection sleeve, a plurality of support rings are fixed on the protection sleeve, a plurality of support blocks are fixed on the fixed plate, a support rod is fixed on the support block, and the support rod is slidably connected to the support ring.

2. The hydraulic cylinder for excavator according to claim 1, characterized in that: A plurality of the pushing blocks are all fixed with protrusions.

3. The hydraulic cylinder for excavator according to claim 1, characterized in that: A plurality of sliding cavities are bored on the fixing plate.

4. The hydraulic cylinder for excavator according to claim 3, characterized in that: A plurality of side walls of the sliding cavities are slidably connected with fixed blocks.

5. The hydraulic cylinder for excavator according to claim 4, characterized in that: A plurality of the fixing blocks are all slidably connected with fixing bolts, and the fixing bolts are threadedly connected to the fixing plates.

6. The hydraulic cylinder for excavator according to claim 3, characterized in that: Limiting grooves are cut on the side walls of the plurality of sliding cavities.

7. The hydraulic cylinder for excavator according to claim 6, characterized in that: The side walls of the plurality of limit grooves are all slidably connected with limit blocks, and the limit blocks are fixedly connected with the pushing blocks.

8. The hydraulic cylinder for excavator according to claim 1, characterized in that: A fixing cylinder is fixed on the hydraulic cylinder body, and the fixing cylinder is slidably connected to the supporting rod.

9. The hydraulic cylinder for excavator according to claim 1, characterized in that: A threaded rod is fixed at one end of each of the support rods, and a nut is threadedly connected to the threaded rod.

10. The hydraulic cylinder for excavator according to claim 9, characterized in that: A baffle is arranged on one side of each of the nuts.

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