Movable hydraulic drawing device

Abstract

The utility model discloses a movable hydraulic drawing device, and belongs to the field of hydraulic drawing devices. The movable type hydraulic drawing device comprises a supporting column, a hydraulic cylinder is arranged at the upper end of the supporting column, a triangular fixing base is arranged on the outer surface of the hydraulic cylinder, the movable type hydraulic drawing device further comprises a connecting plate, the connecting plate is arranged on the triangular fixing base, and a clamping jaw is arranged on the connecting plate. A rubber sleeve is arranged at the end, away from the connecting plate, of each clamping jaw, and a semicircular rubber sleeve is arranged at the lower end of each rubber sleeve. The hydraulic drawing device solves the problems that in order to guarantee friction force of a clamping jaw used by an existing hydraulic drawing device, the front end of the clamping jaw is generally connected with a rubber sleeve in a sleeved mode, but the structure is simple, and use occasions are limited.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic pull-out devices, specifically a mobile hydraulic pull-out device. Background Technology

[0002] Mobile hydraulic pulling and stretching devices are portable equipment that uses hydraulic power to perform stretching, pushing, or pulling operations. They are widely used in construction, bridges, railways, power, petrochemical and other fields.

[0003] Chinese Patent Publication No. CN203209451U discloses a hydraulic drawing device, including a base, a track mounted on the base, a drive shaft and a driven shaft mounted on the base, a hydraulic motor driving the drive shaft to rotate, and a drawing trolley that can slide on the track. The drive shaft and driven shaft are equipped with a drive sprocket and a driven sprocket, respectively, and the drive sprocket is connected to the driven sprocket via a chain. This hydraulic drawing device has a simple structure and low cost. Furthermore, it uses a hydraulic motor to drive the mandrel trolley forward and backward via a chain, resulting in a low failure rate, good safety performance, and no limitation on the length of the steel pipe being processed. The drive and driven sprockets are both single-row double-chain structures, allowing two rows of chains to be installed on one sprocket. This not only avoids uneven force distribution and frequent breakage but also reduces cumbersome adjustment steps, lowers production costs, and improves production efficiency.

[0004] In order to ensure the friction of the gripper, the hydraulic pull-out device of the above patent generally uses a rubber sleeve on the front end of the gripper. However, the structure is relatively simple and its application is limited. Utility Model Content

[0005] The purpose of this utility model is to provide a mobile hydraulic pull-out device. An insertion groove is provided on a rubber sleeve, and multiple semi-circular rubber sleeves are provided at the lower end of the rubber sleeve. Lead plates are placed inside the semi-circular rubber sleeves, which are arranged in a row. When the gripper needs to clamp a small object with low hardness, the lead plates inside the semi-circular rubber sleeves are pulled out. This prevents the excessively hard lead plates from damaging the object. Furthermore, when the semi-circular rubber sleeves with the lead plates removed are subjected to external pressure, they can better conform to the object's surface, increasing friction. This solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a mobile hydraulic pull-out device, including a support column, a hydraulic cylinder at the upper end of the support column, a triangular fixed base on the outer surface of the hydraulic cylinder, and a connecting plate, the connecting plate being mounted on the triangular fixed base, a gripper on the connecting plate, a rubber sleeve at the end of the gripper away from the connecting plate, and a semi-circular rubber sleeve at the lower end of the rubber sleeve.

[0007] Preferably, a lead plate is provided inside the semi-circular rubber sleeve, and the lead plate is sleeved with the semi-circular rubber sleeve.

[0008] Preferably, the rubber sleeve has an insertion groove, which is integrally formed with the rubber sleeve, and the rubber sleeve is connected to the gripper through the insertion groove.

[0009] Preferably, the hydraulic cylinder is provided with a fixing block, which is welded to the outer surface of the hydraulic cylinder.

[0010] Preferably, the fixing block is provided with a connecting rod, which is connected to the rotating bearing of the fixing block.

[0011] Preferably, the hydraulic cylinder has an oil supply pipe at the end away from the gripper, and the oil supply pipe is bolted to the hydraulic cylinder.

[0012] Preferably, an oil pump is installed at the end of the oil pipeline away from the hydraulic cylinder.

[0013] Preferably, a mobile trolley is provided at the lower end of the oil pump.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This invention features an insertion groove on a rubber sleeve, with multiple semi-circular sleeves at the lower end of the rubber sleeve. Lead plates are placed inside the semi-circular sleeves, which are arranged in a row. When the grippers need to hold a small object with low hardness, the lead plates inside the semi-circular sleeves are pulled out. This prevents the hard lead plates from damaging the object. Furthermore, when the semi-circular sleeves with the lead plates removed are subjected to external pressure, they can better conform to the object's surface, increasing friction. This effectively avoids the problems of existing hydraulic pull-out devices where the grippers typically have a rubber sleeve attached to the front end of the gripper to ensure friction, but this structure is relatively simple and its application is limited. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall external structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall main structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the overall right-side structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the rubber sleeve structure of this utility model.

[0020] In the diagram: 1. Mobile trolley; 2. Oil pump; 3. Oil pipe; 4. Support column; 5. Hydraulic cylinder; 6. Triangular fixed base; 7. Connecting plate; 8. Gripper; 9. Connecting rod; 10. Fixing block; 11. Rubber sleeve; 12. Insertion groove; 13. Semi-circular rubber sleeve; 14. Lead plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] To address the issue that existing hydraulic pull-out devices typically use a rubber sleeve at the front end of the gripper to ensure friction, but this design is relatively simple and has limitations in application, this embodiment provides the following technical solution:

[0023] A mobile hydraulic pull-out device includes a support column 4, a hydraulic cylinder 5 mounted on the upper end of the support column 4, a triangular fixed base 6 mounted on the outer surface of the hydraulic cylinder 5, and a connecting plate 7 mounted on the triangular fixed base 6. The connecting plate 7 has grippers 8, with a rubber sleeve 11 mounted on the end of the grippers 8 furthest from the connecting plate 7. A semi-circular rubber sleeve 13 is mounted at the lower end of the rubber sleeve 11, and a lead plate 14 is placed inside the semi-circular rubber sleeve 13, fitting into the lead plate 14. An insertion groove is provided on the rubber sleeve 11. 12. The insertion groove 12 and the rubber sleeve 11 are integrally formed. The rubber sleeve 11 is connected to the gripper 8 through the insertion groove 12. A fixing block 10 is provided on the hydraulic cylinder 5. The fixing block 10 is welded to the outer surface of the hydraulic cylinder 5. A connecting rod 9 is provided on the fixing block 10. The connecting rod 9 is connected to the rotating bearing of the fixing block 10. An oil supply pipe 3 is provided on the end of the hydraulic cylinder 5 away from the gripper 8. The oil supply pipe 3 is bolted to the hydraulic cylinder 5. An oil pump 2 is provided on the end of the oil supply pipe 3 away from the hydraulic cylinder 5. A mobile trolley 1 is provided at the lower end of the oil pump 2.

[0024] In this embodiment, please refer to Figures 1-4 An insertion groove 12 is provided on the rubber sleeve 11, and multiple semi-circular rubber sleeves 13 are provided at the lower end of the rubber sleeve 11. A lead plate 14 is provided inside the semi-circular rubber sleeve 13. The semi-circular rubber sleeves 13 are arranged in a row. When the gripper 8 needs to clamp a small object with low hardness, the lead plate 14 inside the semi-circular rubber sleeve 13 is pulled out to prevent the excessively hard lead plate 14 from pinching the object. When the semi-circular rubber sleeve 13 with the lead plate 14 pulled out is squeezed by external force, it can fit more closely to the surface of the object and increase the friction.

[0025] Working principle: The operator first pushes the mobile trolley 1 to the location where it is needed. Then, as the hydraulic cylinder 5 extends, the connecting rod 9 drives the gripper 8 to open and close. The extension and retraction of the hydraulic cylinder 5 can drive the gripper 8 to open and close. An insertion groove 12 is provided on the rubber sleeve 11, and multiple semi-circular rubber sleeves 13 are provided at the lower end of the rubber sleeve 11. Lead plates 14 are provided inside the semi-circular rubber sleeves 13. The semi-circular rubber sleeves 13 are arranged in a row. When the gripper 8 needs to clamp a small object with low hardness, the lead plates 14 inside the semi-circular rubber sleeves 13 are pulled out to prevent the excessively hard lead plates 14 from pinching the object. When the semi-circular rubber sleeves 13 with the lead plates 14 pulled out are squeezed by external force, they can fit more closely to the surface of the object and increase the friction.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mobile hydraulic pull-out device, comprising a support column (4), wherein a hydraulic cylinder (5) is provided at the upper end of the support column (4), and a triangular fixed base (6) is provided on the outer surface of the hydraulic cylinder (5). Its features are: It also includes a connecting plate (7), which is set on a triangular fixed base (6). The connecting plate (7) is provided with a clamp (8), and a rubber sleeve (11) is provided on the end of the clamp (8) away from the connecting plate (7). A semi-circular rubber sleeve (13) is provided at the lower end of the rubber sleeve (11).

2. The mobile hydraulic pull-out device according to claim 1, characterized in that: A lead plate (14) is provided inside the semi-circular rubber sleeve (13), and the lead plate (14) is sleeved with the semi-circular rubber sleeve (13).

3. A mobile hydraulic pull-out device according to claim 1, characterized in that: The rubber sleeve (11) is provided with an insertion groove (12), which is integrally formed with the rubber sleeve (11). The rubber sleeve (11) is connected to the gripper (8) through the insertion groove (12).

4. A mobile hydraulic pull-out device according to claim 1, characterized in that: A fixing block (10) is provided on the hydraulic cylinder (5), and the fixing block (10) is welded to the outer surface of the hydraulic cylinder (5).

5. A mobile hydraulic pull-out device according to claim 4, characterized in that: A connecting rod (9) is provided on the fixed block (10), and the connecting rod (9) is connected to the rotating bearing of the fixed block (10).

6. A mobile hydraulic pull-out device according to claim 1, characterized in that: The hydraulic cylinder (5) has an oil supply pipe (3) at one end away from the gripper (8), and the oil supply pipe (3) is bolted to the hydraulic cylinder (5).

7. A mobile hydraulic pull-out device according to claim 6, characterized in that: The oil pipeline (3) has an oil pump (2) installed at the end away from the hydraulic cylinder (5).

8. A mobile hydraulic pull-out device according to claim 7, characterized in that: A mobile trolley (1) is provided at the lower end of the oil pump (2).

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