A pneumatic clamp for welding a movable arm of a excavator
By designing the slide and cylinder drive system of the pneumatic clamp, the problems of complex structure or unreliable limit of existing clamps were solved, and stable welding and hoisting compatibility of excavator boom were achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGYIN HUAJUN MACHINERY CO LTD
- Filing Date
- 2025-04-21
- Publication Date
- 2026-07-03
AI Technical Summary
Existing excavator boom welding fixtures are complex in structure and inconvenient to use, or their limiting and fixing effects are unreliable, and they hinder boom hoisting before welding.
A pneumatic clamp was designed, comprising a first slide, a second slide, a guide rail, a cylinder, and a long clamping plate. The cylinder drives the slide to slide along the guide rail, which, together with the long clamping plate and pressure plate, clamps the boom in the horizontal and vertical directions, achieving stable and reliable limiting and fixing.
It features a simple structure and easy operation, enabling stable fixation of the boom during welding to prevent displacement without affecting the boom hoisting process.
Smart Images
Figure CN224445028U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a clamp, specifically a pneumatic clamp that can be used for welding excavator booms. Background Technology
[0002] When welding the boom of an excavator on a welding platform, clamps are needed to limit the boom and prevent it from shifting, which would reduce welding accuracy. However, existing clamps are either too complex and inconvenient to use, or too simple and unreliable in terms of limiting and fixing. In addition, before welding, the boom needs to be hoisted and placed on the welding platform, and the clamps in the vertical direction will hinder the hoisting of the boom. Utility Model Content
[0003] Based on the content in the background art, this utility model provides a pneumatic clamp that can be used for welding excavator booms, which includes a first slide, a second slide, a guide rail, a first cylinder, a second cylinder, a long clamping plate, a third cylinder, and a pressure plate.
[0004] The first slide and the second slide are both mounted on the guide rail. The first cylinder and the second cylinder are respectively located at both ends of the guide rail. The first cylinder and the second cylinder are fixedly installed, specifically they can be fixedly connected to the equipment platform through supports. The end of the telescopic rod of the first cylinder is fixedly connected to the first slide, and the end of the telescopic rod of the second cylinder is fixedly connected to the second slide. Driven by the cylinders of the first cylinder and the second cylinder, the first slide and the second slide can slide along the guide rail.
[0005] Long strip clamps are fixedly connected to the top surfaces of the first and second slides respectively. The long strip clamps are vertically arranged, and a third cylinder is fixedly installed on the inner top surface of the long strip clamps through an mounting plate. A pressure plate is fixedly connected to the end of the telescopic rod of the third cylinder.
[0006] This pneumatic clamp, used for welding excavator booms, features a simple, compact structure and is easy to use. When fixed on the welding platform, the first and second cylinders clamp the boom horizontally via two long clamping plates, while the third cylinder clamps it vertically via a pressure plate. This combination reliably and stably secures the boom, preventing displacement during welding. Furthermore, even when the two long clamping plates are moved to their outermost positions, the third cylinder and pressure plate do not interfere with the lifting and placement of the excavator boom on the welding platform.
[0007] Preferably, the guide rail is provided with a sliding groove, and a first limiting groove is provided on each of the two inner sides of the sliding groove, and a second limiting groove is provided on the bottom surface of the sliding groove.
[0008] The bottom surface of the slide block is fixedly connected to a slider, and the bottom surface of the slider is fixedly connected to a limiting block. The two sides of the slider are respectively located in the two first limiting grooves of the guide rail, and the limiting block of the slider is located in the second limiting groove of the guide rail. This limiting method allows the slide block to slide more smoothly along the guide rail without deviation, making the clamping of the boom by the two long clamping plates more reliable.
[0009] Preferably, the pressure plate is a flexible pressure plate, specifically made of rubber, which can better contact and press against the top surface of the boom.
[0010] Preferably, a fixing plate is integrally connected to the bottom of the long strip clamp, the fixing plate is perpendicular to the long strip clamp, and the fixing plate has multiple through holes. The top surfaces of the first slide and the second slide have multiple corresponding screw holes. The first slide and the second slide are respectively fastened to the corresponding fixing plate by bolts; this makes the fixing of the long strip clamp and the slide more reliable.
[0011] Through the above technical solutions, this utility model has at least the following beneficial effects:
[0012] The pneumatic clamp described in this application, applicable to welding excavator booms, features a simple, compact structure and ease of use. When fixed on the welding platform, the boom is horizontally clamped and limited by two long clamping plates driven by the first and second cylinders. The boom is vertically pressed and limited on the welding platform by a pressure plate driven by the third cylinder. This combination reliably and stably secures the boom, preventing displacement during welding. Furthermore, before welding, moving the two long clamping plates to their outermost positions does not affect the vertical placement of the excavator boom on the welding platform by the third cylinder and pressure plate. Attached Figure Description
[0013] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of this utility model in a schematic manner. Therefore, they only show the components related to this utility model.
[0014] Figure 1 This is a schematic diagram of the overall structure of the pneumatic clamp for welding excavator booms as described in the embodiments of this application;
[0015] Figure 2 for Figure 1 Enlarged view of point A in the middle;
[0016] Figure 3 This is a schematic diagram of the pneumatic clamp described in the embodiments of this application limiting and fixing the boom on the welding platform. Detailed Implementation
[0017] In the description of this application, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships are for illustrative purposes only and should not be construed as limiting this patent. If terms such as "first" and "second" are used for descriptive purposes only, they should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of the stated features. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0018] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0019] refer to Figure 1 and Figure 2 A pneumatic clamp for welding excavator booms includes a first slide 1, a second slide 2, a guide rail 3, a first cylinder 11, a second cylinder 12, a long clamping plate 4, a third cylinder 13, and a pressure plate 5.
[0020] The first slide 1 and the second slide 2 are both mounted on the guide rail 3. The first cylinder 11 and the second cylinder 12 are respectively located at both ends of the guide rail 3. The first cylinder 11 and the second cylinder 12 are fixedly installed, specifically they can be fixedly connected to the equipment platform through the support 6 respectively. The end of the telescopic rod of the first cylinder 11 is fixedly connected to the first slide 1, and the end of the telescopic rod of the second cylinder 12 is fixedly connected to the second slide 2. Under the drive of the cylinders of the first cylinder 11 and the second cylinder 12, the first slide 1 and the second slide 2 can slide along the guide rail 3.
[0021] Long strip clamps 4 are fixedly connected to the top surfaces of the first slide block 1 and the second slide block 2 respectively. The long strip clamps 4 are vertically arranged. A third cylinder 13 is fixedly installed on the inner side of the top of the long strip clamps 4 through the mounting plate 7. A pressure plate 5 is fixedly connected to the end of the telescopic rod of the third cylinder 13.
[0022] This pneumatic clamp, which can be used for welding excavator booms, has a simple and ingenious structure and is easy to use. When fixing it on the welding platform, refer to... Figure 3 Driven by the first cylinder 11 and the second cylinder 12, the excavator boom can be clamped and limited horizontally by two long clamping plates 4. Driven by the third cylinder 13, the excavator boom can be pressed and limited vertically on the welding platform by the pressure plate 5. With the cooperation of both, the boom can be stably and reliably limited and fixed, preventing displacement during welding. Moreover, before welding, moving the two long clamping plates 4 to the outermost position will not affect the lifting and placement of the excavator boom on the welding platform by the third cylinder 13 and the pressure plate 5 in the vertical direction.
[0023] In this specific embodiment:
[0024] refer to Figure 2 The guide rail 3 has a sliding groove 303, and each of the two inner sides of the sliding groove 303 has a first limiting groove 301, and the inner bottom surface of the sliding groove 303 has a second limiting groove 302. The bottom surfaces of the first sliding block 1 and the second sliding block 2 are respectively fixedly connected to sliders 8, and the bottom surfaces of the sliders 8 are fixedly connected to limiting blocks 801. The two sides of the sliders 8 are respectively located in the two first limiting grooves 301 of the guide rail 3, and the limiting blocks 801 of the sliders 8 are located in the second limiting grooves 302 of the guide rail 3. This limiting method allows the sliders to slide more smoothly along the guide rail 3 without deviation, making the clamping of the boom by the two long strip clamps 4 more reliable.
[0025] The pressure plate 5 is a flexible pressure plate, specifically made of rubber, which can better contact and press against the top surface of the boom.
[0026] refer to Figure 1 or Figure 2 The bottom of the long strip clamp 4 is integrally connected to a fixing plate 401. The fixing plate 401 is perpendicular to the long strip clamp 4. The fixing plate 401 has multiple through holes. The top surfaces of the first slide 1 and the second slide 2 have multiple corresponding screw holes. The first slide 1 and the second slide 2 are respectively fastened to the corresponding fixing plate 401 by bolts. This makes the fixing of the long strip clamp 4 and the slide more secure.
[0027] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Based on the present utility model and the above description, relevant personnel can make various changes and modifications without departing from the technical concept of the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A pneumatic clamp for welding excavator booms, characterized in that: It includes a first slide (1), a second slide (2), a guide rail (3), a first cylinder (11), a second cylinder (12), a long clamping plate (4), a third cylinder (13), and a pressure plate (5); The first slide (1) and the second slide (2) are both mounted on the guide rail (3). The first cylinder (11) and the second cylinder (12) are respectively located at both ends of the guide rail (3). The first cylinder (11) and the second cylinder (12) are fixedly installed. The end of the telescopic rod of the first cylinder (11) is fixedly connected to the first slide (1), and the end of the telescopic rod of the second cylinder (12) is fixedly connected to the second slide (2). Under the drive of the cylinders of the first cylinder (11) and the second cylinder (12), the first slide (1) and the second slide (2) can slide along the guide rail (3). Long strip clamps (4) are fixedly connected to the top surfaces of the first slide (1) and the second slide (2), respectively. The long strip clamps (4) are vertically arranged, and a third cylinder (13) is fixedly installed on the inner side of the top of the long strip clamps (4). A pressure plate (5) is fixedly connected to the end of the telescopic rod of the third cylinder (13).
2. The pneumatic clamp according to claim 1, wherein: The guide rail (3) is provided with a sliding groove (303), and a first limiting groove (301) is provided on each of the two inner sides of the sliding groove (303), and a second limiting groove (302) is provided on the inner bottom surface of the sliding groove (303). The bottom surfaces of the first slide (1) and the second slide (2) are respectively fixedly connected to sliders (8), and the bottom surfaces of the sliders (8) are fixedly connected to limit blocks (801). The two sides of the sliders (8) are respectively located in the two first limit grooves (301) of the guide rail (3), and the limit blocks (801) of the sliders (8) are located in the second limit groove (302) of the guide rail (3).
3. The pneumatic clamp according to claim 1 or 2, which is used for welding a movable arm of a excavator, characterized in that: The pressure plate (5) is a flexible pressure plate (5).
4. A pneumatic clamp for welding excavator booms according to claim 1 or 2, characterized in that: The bottom of the long strip clamp (4) is integrally connected to a fixing plate (401). The fixing plate (401) and the long strip clamp (4) are arranged perpendicular to each other. The fixing plate (401) has multiple through holes. The top surfaces of the first slide (1) and the second slide (2) have multiple corresponding screw holes. The first slide (1) and the second slide (2) are respectively fastened to the corresponding fixing plate (401) by bolts.