Fixing device for crushing pipeline at front end of movable arm of excavator

Abstract

The utility model discloses an excavator movable arm front end crushing pipeline fixing device, which relates to the technical field of excavators, and comprises a movable arm body and a crushing pipeline, the front end and the rear end of the crushing pipeline are respectively provided with a first pipe clamp, and a plurality of second pipe clamps are arranged between the first pipe clamps at the two ends. The crushing pipeline is mounted above the movable arm body through the first pipe clamp and the second pipe clamp; the crushing pipeline is divided into a front section and a rear section, and the front section and the rear section are connected and fastened in a detachable mode and are convenient to install and maintain; the first pipe clamp and the second pipe clamp are combined to fixedly install the broken pipeline, on one hand, the first pipe clamp fixed on the two sides is used for fixing the end portion which is greatly impacted by hydraulic oil, the overall clamping force is effectively improved, the pipe clamps are not prone to deformation, and the impact force of the hydraulic oil on the broken pipeline can be better coped with; on the other hand, the middle of the broken pipeline is fixed through the second pipe clamps, the structure is simple, and cost is low.

Description

Technical Field

[0001] This utility model relates to the field of excavator technology, specifically to a device for fixing the front end of the excavator boom's breaking pipe. Background Technology

[0002] Excavators used in crushing operations have two crushing lines installed at the front end of the boom: an oil inlet line and an oil return line. These two crushing lines are generally made of hydraulic steel pipes. Since the hydraulic oil pressure inside the crushing lines can reach 350 bar or even higher, and the internal fluid is subjected to repeated impacts to achieve the crushing purpose, the hydraulic steel pipes are often subject to strong vibrations and impact forces along the axial direction. If they cannot be clamped and fixed tightly, the steel pipes will shift along the axial direction, causing damage to the excavator's pipelines and oil leaks.

[0003] At present, the basic structure for fixing hydraulic steel pipes in excavators is to use a pair of pipe clamps for single-sided fixing. Some OEMs have improved this by using a pipe clamp on one side or a hinged connection, similar to a switch hinge structure, which can be opened and closed, while the other side is bolted to the boom.

[0004] The problem with the above fixing method is:

[0005] (1) Under crushing conditions, the hydraulic steel pipe is prone to large vibration due to repeated impact of the working hydraulic oil. Therefore, the traditional single-sided fixed pipe clamp is prone to deformation after long-term operation, the opening becomes larger, and the clamping force on the steel pipe is lost, resulting in the steel pipe being unable to be fixed. When the deformation is severe, it may even cause the steel pipe to deform, bend or even break.

[0006] (2) The fixing method of pipe clamps or hinged connections has the problem of loosening and failure at the clamp or hinge, or direct separation. It is only slightly more reliable than traditional pipe clamps, but it is still difficult to meet the needs of the broken pipe fixing state when the excavator is working under harsh conditions. Utility Model Content

[0007] To address the shortcomings of the existing technology, this utility model provides a fixing device for the front end of the excavator boom's breaker pipeline, which can strengthen the clamping force on the breaker oil inlet and return pipelines, ensuring that the installation of the breaker pipeline can adapt to various harsh working conditions and effectively enhance overall reliability; at the same time, the overall layout is simpler and more aesthetically pleasing.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A device for fixing a front-end breaker pipe of an excavator boom includes a boom body and a breaker pipe. The front and rear ends of the breaker pipe are respectively provided with first pipe clamps, and a plurality of second pipe clamps are provided between the first pipe clamps at both ends. The breaker pipe is installed above the boom body through the first pipe clamps and the second pipe clamps. The breaker pipe is divided into front and rear sections, which are detachably connected and fastened for easy installation and maintenance.

[0010] As a further implementation, the first pipe clamp is installed at the front and rear ends of the breaker pipe using a double-pipe clamp method to further increase the clamping force on the breaker pipe, prevent the breaker pipe from undergoing axial displacement due to impact, and reduce the risk of excavator pipe damage and oil leakage.

[0011] As a further implementation, rubber sleeves are respectively provided between the first and second pipe clamps and the crushing pipeline, and the rubber sleeves are fitted onto the outer wall of the crushing pipeline.

[0012] As a further implementation, the first pipe clamp includes a first pipe clamp body, a first pipe clamp seat, and a first fastener. The first pipe clamp seat is fixedly connected to the boom body by welding. The first pipe clamp body is sleeved on the outside of the breaking pipe and is fixedly connected to the first pipe clamp seat by the first fastener, thereby fixing the breaking pipe to the boom body.

[0013] As a further implementation, the first pipe clamp body includes two mating arc-shaped clamps, the two ends of which are planar mating portions, and the planar mating portions of the two arc-shaped clamps contact each other to form a closure; one end of the arc-shaped clamp is connected by the first fastener, and the other end is provided with a fastening bolt and nut for connection and fixation.

[0014] As a further implementation, a double gasket is provided at one end of the first pipe clamp connected to the first fastener. The double gasket is disposed between the planar mating parts of the two arc-shaped clamps to enhance the reliability of the connection.

[0015] As a further implementation, the second pipe clamp includes a second pipe clamp body, a second pipe clamp seat, and a second fastener. The second pipe clamp is fixedly installed on the boom body by welding. The second pipe clamp body is sleeved outside the breaking pipe and is fixedly connected to the second pipe clamp seat by the second fastener, thereby fixing the breaking pipe to the boom body.

[0016] As a further implementation, the second pipe clamp body includes two mating arc-shaped clamping pieces, the flat ends of the two arc-shaped clamping pieces contacting each other and connected to the second fastener, and an opening is formed between the arc-shaped ends of the arc-shaped clamping pieces.

[0017] As a further implementation, the two sections of the broken pipeline are connected by connecting bolts.

[0018] As a further implementation, a buffer hose is connected between the front and rear sections of the broken pipeline to reduce the impact of hydraulic oil inside the front section of the steel pipe.

[0019] As a further implementation, the crushing pipeline includes a crushing oil inlet steel pipe and a crushing oil return steel pipe, which are arranged in parallel on both sides of the boom body.

[0020] By adopting the above technical solution, the beneficial effects of this utility model are as follows:

[0021] 1. This utility model uses a combination of first and second pipe clamps to fix and install the broken pipeline. On the one hand, the first pipe clamp, which is fixed on both sides, fixes the end that is subjected to greater impact from hydraulic oil, which effectively improves the overall clamping force and the pipe clamp is not easily deformed, and can better cope with the impact force of hydraulic oil on the broken pipeline. On the other hand, the middle part of the broken pipeline is fixed by several second pipe clamps. The structure is simple and the cost is low.

[0022] 2. This utility model designs the broken pipeline as two detachable sections, which greatly facilitates installation and maintenance. Furthermore, a flexible hose can be selectively connected between the two sections to reduce the impact of hydraulic oil inside the front section of the steel pipe, thereby further reducing the risk of pipe clamp deformation and loosening of the steel pipe. Attached Figure Description

[0023] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0024] Figure 1 This is a front view schematic diagram of an embodiment of the present utility model;

[0025] Figure 2 This is a three-dimensional structural diagram of an embodiment of the present utility model;

[0026] Figure 3 This is a top view schematic diagram of an embodiment of the present utility model;

[0027] Figure 4 This is a partially enlarged schematic diagram of an embodiment of the present utility model;

[0028] Figure 5 This is a schematic diagram of the first pipe clamp structure according to an embodiment of the present utility model;

[0029] Figure 6 This is a schematic diagram of the second pipe clamp structure according to an embodiment of the present utility model.

[0030] In the diagram: 1. Boom body; 2. Breaking pipeline; 21. Breaking oil inlet steel pipe; 22. Breaking oil return steel pipe; 3. First pipe clamp; 4. Second pipe clamp; 5. Rubber hose sleeve; 6. Connecting bolts;

[0031] 31. First pipe clamp body; 311. Arc-shaped clamp plate; 312. Nut; 313. Fastening bolt; 32. First pipe clamp seat; 33. First fastener; 34. Double gasket;

[0032] 41. Second pipe clamp body; 411. Arc-shaped clamp piece; 42. Second pipe clamp seat; 43. Second fastener. Detailed Implementation

[0033] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0034] It should be noted that the terminology used herein is for descriptive purposes only and is not intended to limit the exemplary embodiments according to this utility model. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0035] Example 1

[0036] In one typical embodiment of this application, a device for fixing the front-end breaker pipe of an excavator boom is provided, such as... Figure 1-6 As shown, the device includes a boom body 1 and a breaker pipe 2. The front and rear ends of the breaker pipe 2 are respectively provided with first pipe clamps 3, and several second pipe clamps 4 are provided between the first pipe clamps 3 at both ends. The breaker pipe 2 is installed above the boom body 1 through the first pipe clamps 3 and the second pipe clamps 4. The breaker pipe 2 is divided into front and rear sections, which are connected and fastened in a detachable manner for easy installation and maintenance.

[0037] Specifically, such as Figure 1 As shown, the upper part of the boom body 1 is equipped with multiple hydraulic lines, among which the crushing line 2 includes a crushing oil inlet steel pipe 21 and a crushing oil return steel pipe 22, combined with... Figure 3 As shown, the breaker inlet steel pipe 21 and the breaker return steel pipe 22 are respectively arranged in parallel on both sides of the boom body for connecting the main control valve and the breaker hammer.

[0038] To effectively fix the breaker pipe at the front end of the excavator boom and prevent damage and oil leakage caused by the axial impact of hydraulic oil, this embodiment is equipped with several first and second pipe clamps to fix the breaker pipe and the boom body together. The first pipe clamp is a double-sided fixing clamp, and the second pipe clamp is a single-sided fixing clamp. The first pipe clamp can increase the clamping force compared to the second pipe clamp, while the second pipe clamp has a simpler structure and lower cost, thus being economical.

[0039] Specifically, in combination Figure 1 , Figure 2 As shown, the first pipe clamp 3 is set at the front end and the rear end of the crushing oil inlet steel pipe 21 and the crushing oil return steel pipe 22. Five second pipe clamps 4 are arranged at intervals between the first pipe clamps 3 at the front end and the rear end of each crushing pipeline. Thus, the first pipe clamps fix the position with greater hydraulic oil impact force, effectively improving the overall clamping force. At the same time, the cooperation of the second pipe clamps reduces the assembly cost of the whole machine while ensuring the reliability of the crushing pipeline after fixation, thus taking into account economy.

[0040] In particular, due to the harsh crushing conditions, the hydraulic oil impact exerts a significant force on the steel pipe during operation. Considering that this high-pressure force feedback to the pipe clamps could cause the clamps to deform and fail to clamp the steel pipe, this application sets up a first pipe clamp in the form of a double pipe clamp at the end of the crushing pipeline, combined with... Figure 2 and Figure 4 As shown, at each fixed position, two first pipe clamps 3 are connected in series along the crushing pipeline and are fixedly connected to the crushing pipeline 2 and the boom body 1. This can further enhance the overall reliability and avoid the risk of the steel pipe loosening due to the deformation of the pipe clamps.

[0041] It should be noted that the setting of double pipe clamps can be selected according to actual needs. If the pressure of the broken return oil steel pipe is low, the first pipe clamp can be set in the form of a single pipe clamp at the rear end of the broken return oil steel pipe; if it is necessary to increase the clamping force, all pipe clamps can be set in the form of double pipe clamps.

[0042] Specifically, such as Figure 4 and Figure 5As shown, the first pipe clamp 3 consists of a first pipe clamp body 31, a first pipe clamp seat 32, and a first fastener 33. The first pipe clamp seat 32 is fixedly connected to the boom body 1 by welding. The first pipe clamp body 32 is sleeved on the outside of the breaker pipe 2 and fixedly connected to the first pipe clamp seat 32 by the first fastener 33, thereby fixing the breaker pipe onto the boom body. The first pipe clamp body 31 includes two mating arc-shaped clamping plates 311. Each arc-shaped clamping plate 311 has two planar mating portions at its ends. The planar mating portions of the two mating arc-shaped clamping plates 311 contact each other to form a closure, clamping the breaker pipe 2 inside. One end of the two arc-shaped clamping plates 311 is connected by the first fastener 33, and the other end is fixedly connected by a fastening bolt 313 and a nut 312, thereby securing the breaker pipe clamped inside and fixing it onto the boom body by the first fastener.

[0043] In this embodiment, as Figure 4 and Figure 5 As shown, a rubber sleeve 5 is provided between the first pipe clamp 3 and the crushing pipe 2. The rubber sleeve 5 is fitted onto the outer wall of the crushing pipe 2, which facilitates friction between the outer wall of the crushing pipe and the inner wall of the arc-shaped clamp, ensuring reliable fastening. Additionally, a double gasket 34 is provided at one end of the first pipe clamp 3 that connects to the first fastener. Figure 5 As shown, the double gasket 34 is installed between the planar mating portions of the two mating arc-shaped clamps 311 to enhance the reliability of the closure and connection of the first pipe clamp body.

[0044] In this embodiment, the first fastener is secured with a hexagonal head bolt. The hexagonal head bolt passes through the planar mating part of the two arc-shaped clamps and then connects to the first pipe clamp seat. The installation and fixation of the breaking pipeline is achieved through the connection between the first pipe clamp seat and the boom body.

[0045] Specifically, such as Figure 6 As shown, the second pipe clamp 4 includes a second pipe clamp body 41, a second pipe clamp seat 42, and a second fastener 43. The second pipe clamp seat 42 is fixedly installed on the boom body 1 by welding. The second pipe clamp body 41 is sleeved on the outside of the breaker pipe 2 and is fixedly connected to the second pipe clamp seat 42 by the second fastener 43, thereby fixing the breaker pipe to the boom body. The second pipe clamp body 41 includes two mating arc-shaped clamping pieces 411. The two ends of each arc-shaped clamping piece are a flat end and an arc-shaped end, respectively. The flat ends of the two mating arc-shaped clamping pieces are in contact with each other and are connected by the second fastener 43. There is a certain gap between the arc-shaped ends of the two arc-shaped clamping pieces 411 to form an opening, leaving a margin for relative movement when the two pipe clamps are clamped during assembly.

[0046] In this embodiment, as Figure 6As shown, a rubber sleeve 5 is also provided between the second pipe clamp 4 and the crushing pipe 3. The rubber sleeve 5 is fitted onto the outer wall of the crushing pipe and contacts the inner side of the second pipe clamp body 41 to ensure the reliability of the second pipe clamp's fixation. Furthermore, a double washer is provided on the side of the second pipe clamp body that connects to the second fastener. The double washer is installed between the flat ends of the two mating arc-shaped clamp pieces to enhance the reliability of the second pipe clamp body's closure and connection. In this embodiment, the second fastener is a hexagonal head bolt.

[0047] In addition, considering that the breaker piping covers the entire boom, and to ensure the ease of machining the inlet and outlet steel pipes, in this embodiment, each breaker piping is divided into two sections, combined with... Figure 2 and Figure 3 As shown, the crushed oil inlet steel pipe 21 and the crushed oil return steel pipe 22 are divided into front and rear sections respectively. The two sections of steel pipe are connected by two connecting bolts 6 to achieve a detachable fastening connection, which can not only improve the processing accuracy of the steel pipe, but also facilitate the assembly and maintenance of the crushing pipeline.

[0048] In a preferred embodiment, the two sections of steel pipe can be appropriately shortened, and a buffer hose can be connected between the two sections of steel pipe to play a buffering role, which can reduce the impact of internal hydraulic oil at the front end of the broken pipeline.

[0049] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for fixing the front end of a breaker pipe of an excavator boom, characterized in that, The device includes a boom body and a breaker pipe. The breaker pipe is provided with a first pipe clamp at both ends and a plurality of second pipe clamps between the first pipe clamps at both ends. The breaker pipe is installed above the boom body through the first pipe clamps and the second pipe clamps. The breaker pipe is divided into two sections, front and rear, which are detachably connected and fastened.

2. The device for fixing the front end of the excavator boom's breaking pipe as described in claim 1, characterized in that, The first pipe clamp is installed at both the front and rear ends of the broken pipe using a double pipe clamp method.

3. The device for fixing the front end of the excavator boom's breaking pipe as described in claim 1, characterized in that, A rubber sleeve is provided between the first pipe clamp and the second pipe clamp and the crushing pipeline, and the rubber sleeve is fitted on the outer wall of the crushing pipeline.

4. The device for fixing the front end of the excavator boom's breaking pipe as described in claim 1, characterized in that, The first pipe clamp includes a first pipe clamp body, a first pipe clamp seat, and a first fastener. The first pipe clamp seat is fixedly connected to the boom body by welding. The first pipe clamp body is sleeved on the outside of the breaking pipe and is fixedly connected to the first pipe clamp seat by the first fastener.

5. The device for fixing the front end of the excavator boom's breaking pipeline as described in claim 4, characterized in that, The first pipe clamp body includes two mating arc-shaped clamps, the two ends of which are planar mating parts, and the planar mating parts of the two arc-shaped clamps contact each other to form a closure; one end of the arc-shaped clamp is connected by the first fastener, and the other end is provided with a fastening bolt and nut for connection and fixation.

6. The device for fixing the front end of the excavator boom's breaking pipeline as described in claim 5, characterized in that, The first pipe clamp is provided with a double gasket at one end of the connection to the first fastener, and the double gasket is disposed between the planar mating parts of the two arc-shaped clamps.

7. The device for fixing the front end of the excavator boom's breaking pipe as described in claim 1, characterized in that, The second pipe clamp includes a second pipe clamp body, a second pipe clamp seat, and a second fastener. The second pipe clamp seat is fixedly installed on the boom body by welding. The second pipe clamp body is sleeved outside the breaking pipe and is fixedly connected to the second pipe clamp seat by the second fastener.

8. The device for fixing the front end of the excavator boom's breaking pipeline as described in claim 7, characterized in that, The second pipe clamp body includes two mating arc-shaped clamping pieces, the flat ends of the two arc-shaped clamping pieces are in contact with each other and connected to the second fastener, and an opening is formed between the arc-shaped ends of the arc-shaped clamping pieces.

9. The device for fixing the front end of the excavator boom's breaking pipeline as described in claim 7, characterized in that, The two sections of the broken pipeline are connected by connecting bolts.

10. The device for fixing the front end of the excavator boom's breaker pipe as described in claim 1, characterized in that, A buffer hose is connected between the two sections of the broken pipeline.

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