Hydraulic oil pipe power tongs with opening locking structure

Abstract

The utility model relates to the technical field of hydraulic oil pipe power tongs, in particular to a hydraulic oil pipe power tong with an opening locking structure, which comprises a hydraulic tong body, a stopping plate is hinged to the front side of the hydraulic tong body, a shifting block is mounted at the bottom of the stopping plate, and an inserting block is mounted on the left side of the front portion of the hydraulic tong body. A connecting block is installed on the left side of the inner wall of the stopping plate, two limiting rods are connected to the right side of the connecting block in an inserted mode, two limiting grooves are formed in the left side of an inserting block, and a rubber plate is installed on the rear side of the stopping plate. The device has the beneficial effects that the stop plate is closed to drive the two limiting rods to move synchronously, and meanwhile, the right ends of the two limiting rods can be driven to be inserted into the inner wall of the limiting groove when the insertion block is inserted into the left side of the stop plate by utilizing the elastic force of the elastic piece, so that the stop plate is effectively fixed, the locking stability is improved, and the locking effect is improved. And subsequent opening operation is facilitated, and the locking effect of the hydraulic oil pipe power tong opening locking structure is further enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic oil pipe power tongs, in particular to a hydraulic oil pipe power tongs with an opening locking structure. Background Art

[0002] Hydraulic tubing power tongs are a mechanical threading tool that uses the power of a workover rig to operate. They are mainly used to thread tubing and drilling tools during the workover process. Hydraulic tubing power tongs are important tools in the workover field. They use the power of the workover rig to complete the threading and unthreading of tubing and drilling tools through hydraulic drive, which not only significantly reduces the labor intensity of workers, but also improves work efficiency and safety.

[0003] In the prior art, the opening locking structure of the traditional hydraulic oil pipe power tongs is achieved by pushing the hydraulic oil pipe power tongs forward to match the oil pipe, and at the same time pushing the lever at the bottom to drive the stop plate to close, thereby achieving opening locking and preventing dangerous accidents from occurring during use. However, although the structure locks the opening through the cooperation between the stop frame and the plug-in block, it is difficult to effectively fix the stop plate by relying solely on the plug-in cooperation between the two, and it is easy to loosen during operation, thereby affecting the locking effect.

[0004] Therefore, a hydraulic oil pipe power tongs with an open locking structure is needed to solve the problem that the stop plate of the existing hydraulic oil pipe power tongs is prone to loosening, thereby affecting the locking effect. Utility Model Content

[0005] The utility model aims to provide a hydraulic oil pipe power tongs with an opening locking structure to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hydraulic oil pipe power pliers with an open locking structure, comprising a hydraulic pliers body, a stop plate hinged on the front side of the hydraulic pliers body, a shift block installed at the bottom of the stop plate, an insert block installed on the left side of the front of the hydraulic pliers body, a connecting block installed on the left side of the inner wall of the stop plate, two limiting rods inserted on the right side of the connecting block, two limit grooves opened on the left side of the insert block, and a rubber plate installed on the rear side of the stop plate.

[0007] Preferably, movable grooves are provided on both upper and lower sides of the interior of the connecting block, a limit plate is installed on the inner wall of the movable groove, and an elastic member is installed on the left side of the limit plate.

[0008] Preferably, the left side of the elastic member is installed on the inner wall of the movable groove, and the right side of the limiting plate is installed between the left end of the limiting rod.

[0009] Preferably, two T-shaped blocks are installed on the front side of the rubber plate, two fixing blocks are installed on the inner wall of the stop plate, slots are opened on the rear sides of the fixing blocks, and the T-shaped blocks penetrate the upper rear side of the stop plate and are inserted into the inner walls of the slots.

[0010] Preferably, two slots are provided on the upper rear side of the stop plate, and a clamp is installed on the upper front side of the T-shaped block.

[0011] Preferably, the clamping head is clamped on the inner wall of the clamping slot.

[0012] Preferably, the right end of the limiting rod passes through the connecting block and is inserted into the inner wall of the limiting groove.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The hydraulic oil pipe power tongs with an open locking structure proposed by the utility model drives the two limit rods to move synchronously by closing the stop plate, and at the same time utilizes the elastic force of the elastic member so that when the plug block is plugged into the left side of the stop plate, the right ends of the two limit rods can be driven to insert into the inner wall of the limit groove, thereby effectively fixing the stop plate. This not only improves the locking stability, but also facilitates the subsequent opening operation, and further enhances the locking effect of the hydraulic oil pipe power tongs open locking structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the rubber sheet of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the fixed block of the utility model;

[0018] Figure 4 This is a schematic diagram of the plug-in structure of the utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the connection block of the utility model;

[0020] Figure 6 for Figure 5 Structural cross-section at AA in the middle;

[0021] Figure 7 This is a schematic diagram of the clamp structure of the utility model.

[0022] In the figure: 1. hydraulic pliers body; 2. stop plate; 3. rubber plate; 4. plug block; 5. slot; 6. clamping slot; 7. fixing block; 8. T-shaped block; 9. shift block; 10. limiting slot; 11. connecting block; 12. limiting rod; 13. moving slot; 14. elastic member; 15. limiting plate; 16. clamping head. DETAILED DESCRIPTION

[0023] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example 1: Please refer to Figure 1-Figure 7 The utility model provides a technical solution: a hydraulic oil pipe power tongs with an opening locking structure, comprising a hydraulic pliers body 1, a stop plate 2 is hingedly connected to the front side of the hydraulic pliers body 1, a shift block 9 is installed at the bottom of the stop plate 2, an insert block 4 is installed on the left side of the front of the hydraulic pliers body 1, a connecting block 11 is installed on the left side of the inner wall of the stop plate 2, two limiting rods 12 are inserted on the right side of the connecting block 11, two limiting grooves 10 are provided on the left side of the insert block 4, and a rubber plate 3 is installed on the rear side of the stop plate 2; the right end of the limiting rod 12 passes through the connecting block 11 and is inserted into the inner wall of the limiting groove 10, so that the limiting rod 12 is used to insert it into the inner wall of the limiting groove 10 when the stop plate 2 is closed, thereby increasing the stability of the stop plate 2, so as to improve the locking effect of the hydraulic oil pipe power tongs opening.

[0025] First, push the hydraulic pliers body 1 forward and keep it parallel to the oil pipe, and push the hydraulic pliers body 1 to match the oil pipe. At this time, when the hydraulic pliers body 1 moves forward, the reaction force of the oil pipe will be used to drive the shift block 9 to swing backward, and at the same time, the stop plate 2 and the hydraulic pliers body 1 will be hinged and closed. At this time, the left side of the stop plate 2 will be sleeved on the outside of the plug block 4. When the plug block 4 is closed, the connecting block 11 will be synchronously hinged to one side of the plug block 4. At this time, the stop plate 2 is closed, and the limiting rod 12 is pushed by the plug block 4 to move to the inner wall of the moving groove 13. When the stop plate 2 is completely closed, the limiting rod 12 is driven to be inserted into the inner wall of the limiting groove 10, and then the limiting rod 12 is used to improve the installation stability between the stop plate 2 and the hydraulic pliers body 1, so as to improve the locking effect of the stop plate 2. At the same time, the setting of the rubber plate 3 is used to reduce the pressure of the stop plate 2 when it is pushed forward to open, thereby improving the service life of the stop plate 2.

[0026] Embodiment 2: On the basis of embodiment 1, in order to realize the driving limit rod 12 to be inserted into the inner wall of the limit groove 10, movable grooves 13 are opened on the upper and lower sides of the interior of the connecting block 11, and a limit plate 15 is installed on the inner wall of the movable groove 13, and an elastic member 14 is installed on the left side of the limit plate 15; the left side of the elastic member 14 is installed on the inner wall of the movable groove 13, and the right side of the limit plate 15 is installed between the left end of the limit rod 12, so that the elastic force of the elastic member 14 itself is used to drive the limit plate 15 to move, and then drive the limit rod 12 to be inserted into the inner wall of the limit groove 10, so as to improve the locking effect.

[0027] When the plug block 4 is closed, the connecting block 11 will be synchronously hinged to one side of the plug block 4. Since a movable groove 13 is opened inside the connecting block 11 and an elastic member 14 is installed on the inner wall of the movable groove 13, the stop plate 2 is closed at this time, and the limiting rod 12 is pushed by the plug block 4 to move to the inner wall of the movable groove 13. When the stop plate 2 is completely closed, the elastic force of the elastic member 14 is used to drive the limit plate 15 to move to the right, and drive the limiting rod 12 to be connected to the inner wall of the limiting groove 10, and then the limiting rod 12 is used to improve the stability of the installation between the stop plate 2 and the hydraulic pliers body 1.

[0028] Embodiment 3: On the basis of embodiment 2, in order to facilitate the replacement of the rubber sheet 3, two T-shaped blocks 8 are installed on the front side of the rubber sheet 3, two fixing blocks 7 are installed on the inner wall of the stop plate 2, and a slot 5 is provided on the rear side of the fixing block 7. The T-shaped block 8 penetrates the upper rear side of the stop plate 2 and is plugged into the inner wall of the slot 5. When the rubber sheet 3 is worn out after long-term use, it cannot play an effective buffering effect. At this time, the rubber sheet 3 is pulled upward to drive the two T-shaped blocks 8 on the front side thereof to slide along the inner wall of the slot 5, so that it moves upward and disengages from the fixing block 7. Since the T-shaped block 8 penetrates the rear side of the stop plate 2, it is continuously pulled upward to disengage from the stop plate 2, and then the rubber sheet 3 can be replaced. After completion, the rubber sheet 3 is reset, and the two T-shaped blocks 8 on the front side thereof are plugged into the inner wall of the slot 5, so that the subsequent replacement of the rubber sheet 3 is convenient. Embodiment 4: On the basis of embodiment 3, in order to increase the stability of the installation between the rubber plate 3 and the stop plate 2, two slots 6 are opened on the upper rear side of the stop plate 2, and a clamping head 16 is installed on the upper front side of the T-shaped block 8; the clamping head 16 is clamped on the inner wall of the slot 6, and the clamping head 16 is inserted into the inner wall of the slot 6 to increase the friction between the rubber plate 3 and the stop plate 2, thereby facilitating subsequent replacement and use.

[0029] Pull the rubber sheet 3 upwards, driving the two T-shaped blocks 8 on its front side to slide along the inner wall of the slot 5, and at the same time driving the clamping head 16 to disengage from the slot 6. Since the T-shaped block 8 passes through the rear side of the stop plate 2, continue to pull it upwards to disengage it from the stop plate 2, and then the rubber sheet 3 can be replaced. After completion, the rubber sheet 3 is reset. At this time, the two clamping heads 16 are used to clamp to the inner wall of the slot 6 when the rubber sheet 3 is gradually reset, thereby improving the stability of the installation between the rubber sheet 3 and the stop plate 2, and then facilitating subsequent disassembly and use.

[0030] In actual use, first push the hydraulic pliers body 1 forward and keep it parallel to the oil pipe, and push the hydraulic pliers body 1 to match the oil pipe. At this time, when the hydraulic pliers body 1 moves forward, it will use the reaction force of the oil pipe to drive the shift block 9 to swing backward, and at the same time drive the stop plate 2 to hinge with the hydraulic pliers body 1 and close. At this time, the left side of the stop plate 2 will be sleeved on the outside of the plug block 4. At this time, when the plug block 4 is closed, it will drive the connecting block 11 to be hinged to one side of the plug block 4 synchronously. Since the connecting block 11 is provided with a moving groove 13 inside, and the inner wall of the moving groove 13 An elastic member 14 is installed, and the stop plate 2 is closed at this time, and the limiting rod 12 is pushed by the plug block 4 to move to the inner wall of the moving groove 13. When the stop plate 2 is completely closed, the elastic force of the elastic member 14 is used to drive the limit plate 15 to move rightward, and drive the limiting rod 12 to be inserted into the inner wall of the limiting groove 10, and then the limiting rod 12 is used to improve the stability of the installation between the stop plate 2 and the hydraulic pliers body 1, so as to improve the locking effect of the stop plate 2. At the same time, the setting of the rubber plate 3 is used to reduce the pressure of the stop plate 2 when it is pushed forward to open, thereby improving the service life of the stop plate 2;

[0031] When used for a long time, the rubber sheet 3 is worn and cannot play an effective buffering effect. At this time, the rubber sheet 3 is pulled upward to drive the two T-shaped blocks 8 on its front side to slide along the inner wall of the slot 5, so that it moves upward and disengages from the fixed block 7, and at the same time drives the clamping head 16 to disengage from the slot 6. Since the T-shaped block 8 passes through the rear side of the stop plate 2, it is continued to be pulled upward to disengage from the stop plate 2, and then the rubber sheet 3 can be replaced. After completion, the rubber sheet 3 is reset and the two T-shaped blocks 8 on its front side are plugged into the inner wall of the slot 5. At this time, the two clamping heads 16 are used to clamp to the inner wall of the slot 6 when the rubber sheet 3 is gradually reset, thereby improving the stability of the installation between the rubber sheet 3 and the stop plate 2, and then facilitating subsequent disassembly and use.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic oil pipe power pliers with an opening locking structure, comprising a hydraulic pliers body (1), a stop plate (2) hingedly connected to the front side of the hydraulic pliers body (1), a shift block (9) installed at the bottom of the stop plate (2), and an insert block (4) installed on the left side of the front of the hydraulic pliers body (1), characterized in that: A connecting block (11) is installed on the left side of the inner wall of the stop plate (2), two limiting rods (12) are inserted on the right side of the connecting block (11), two limiting grooves (10) are opened on the left side of the inserting block (4), and a rubber plate (3) is installed on the rear side of the stop plate (2).

2. The hydraulic oil pipe power tongs with an opening and locking structure according to claim 1, characterized in that: The connection block (11) is provided with a movable groove (13) on both upper and lower sides thereof, a limit plate (15) is installed on the inner wall of the movable groove (13), and an elastic member (14) is installed on the left side of the limit plate (15).

3. The hydraulic oil pipe power tongs with an opening locking structure according to claim 2, characterized in that: The left side of the elastic member (14) is installed on the inner wall of the movable groove (13), and the right side of the limiting plate (15) is installed between the left end of the limiting rod (12).

4. The hydraulic oil pipe power tongs with an opening and locking structure according to claim 1, characterized in that: Two T-shaped blocks (8) are installed on the front side of the rubber plate (3), two fixing blocks (7) are installed on the inner wall of the stop plate (2), a slot (5) is provided on the rear side of the fixing block (7), and the T-shaped block (8) passes through the upper rear side of the stop plate (2) and is plugged into the inner wall of the slot (5).

5. The hydraulic oil pipe power tongs with an opening locking structure according to claim 4, characterized in that: Two clamping grooves (6) are provided on the upper rear side of the stop plate (2), and a clamping head (16) is installed on the upper front side of the T-shaped block (8).

6. The hydraulic oil pipe power tongs with an opening locking structure according to claim 5, characterized in that: The clamping head (16) is clamped on the inner wall of the clamping groove (6).

7. The hydraulic oil pipe power tongs with an opening and locking structure according to claim 1, characterized in that: The right end of the limiting rod (12) passes through the connecting block (11) and is inserted into the inner wall of the limiting groove (10).

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