Control device of hydraulic power tongs

Abstract

The utility model relates to the technical field of hydraulic power tongs, in particular to a control device of hydraulic power tongs, which comprises a fixing support, a hydraulic rod and a connecting disc, a plurality of side baffles are welded on the periphery of the outer wall of the fixing support, the hydraulic rod is movably connected with the inner wall of the upper end of each side baffle, and the connecting disc is erected in the middle of the upper end of the fixing support. A telescopic long rod is slidably connected to the output end of the hydraulic rod, a movably-connected connecting arm is fixed to the end of the telescopic long rod and the end of the hydraulic rod, and the two ends of the surface of the telescopic long rod communicate with hydraulic conveying pipelines for conveying hydraulic oil; the control device of the hydraulic power tongs has the beneficial effects that when the control device of the hydraulic power tongs is used, the hydraulic rod serves as a grabbing control part of the power tongs and is movably connected with the power tongs and the side baffles, control is sensitive, power is strong, and the requirement for grabbing most goods in the market is met.

Description

Technical Field

[0001] The utility model relates to the field of hydraulic power tongs, in particular to a control device for hydraulic power tongs. Background Art

[0002] As a grasping tool, hydraulic power tongs are professional hydraulic tools. Their main components are an oil tank, a power mechanism, a reversing valve, a pressure relief valve, and an oil pump mechanism. The control device serves as the control system of the hydraulic power tongs to meet the grasping needs of the hydraulic power tongs and ensure that the hydraulic power tongs can be used effectively.

[0003] The utility model provides a hydraulic power tongs safety control device (CN204877325U), including a hydraulic power tongs, the hydraulic power tongs are installed on the boom, a hydraulic oil circuit and a drilling rig reversing valve are connected to the hydraulic power tongs, and the characteristics are that a sensor is provided on the boom, the sensor is connected to the controller through a line, an electromagnetic reversing valve is provided on the hydraulic oil circuit between the hydraulic power tongs and the drilling rig reversing valve, and the electromagnetic reversing valve is connected to the controller through a line. The utility model is specially provided with a sensor at the boom near the hydraulic power tongs, the function of the sensor is to sense the position of the drill rod, and then the on-off of the hydraulic oil circuit is controlled by the controller, so as to control and manipulate the use of the hydraulic power tongs, and the structure is simple, the installation is easy, the operation is reliable, and it is particularly suitable for the safety upgrade of the hydraulic power tongs in the drilling and well drilling industry. However, due to a certain center deviation at the connection between the hydraulic power tongs and the sling in use, a slight gap appears when the object is hoisted and grabbed, and the user needs to make a slight adjustment to the object through a forklift to meet the grabbing requirements of the hydraulic power tongs, which brings certain troubles to the user.

[0004] Therefore, we propose a control device for hydraulic power tongs. Utility Model Content

[0005] The purpose of the utility model is to provide a control device for a hydraulic power tongs 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: the control device of the hydraulic power tongs includes: a fixed bracket, a hydraulic rod and a connecting plate, a plurality of side baffles are welded around the outer wall of the fixed bracket, and the hydraulic rod is movably connected to the inner wall of the upper end of the side baffle, a connecting plate is mounted on the middle part of the upper end of the fixed bracket, the output end of the hydraulic rod is slidably connected to a telescopic long rod, and the ends of the telescopic long rod and the hydraulic rod are fixed with movably connected connecting arms, and the two ends of the surface of the telescopic long rod are connected to hydraulic delivery pipelines for delivering hydraulic oil.

[0007] Preferably, a fixed shaft is inserted into the connection between the side baffle, the hydraulic rod and the power tongs, and the hydraulic rod and the power tongs are movably connected to the fixed shaft.

[0008] Preferably, a pre-fixed stud is fixed at the connection between the connecting plate and the lower end of the fixing bracket, and the connecting plate and the fixing bracket are fixed by welding.

[0009] Preferably, a central column is fixed in the middle of the upper end of the connecting plate, and reinforcing ribs are welded around the outer wall of the central column.

[0010] Preferably, the bottom of the reinforcing rib is fixed to the connecting plate by welding, and a mounting arm for connecting equipment is welded to the top of the upper end of the central column.

[0011] Preferably, the reinforcing ribs are provided in a plurality and are distributed in a triangular shape.

[0012] Compared with the prior art, the beneficial effect of the utility model is that when the control device of the hydraulic power tongs is in use, the hydraulic rod serves as a grabbing control component of the power tongs, and is connected to the power tongs and the side baffle in a movable connection manner. It has sensitive control and strong power, and can meet the needs of grabbing most goods on the market.

[0013] The connecting plate, stud, center column, reinforcing ribs and hanger are used as installation parts of the fixed bracket. The stud is screwed into the middle through hole of the fixed bracket in a pre-fixed manner. At the same time, the four sides of the connecting plate are welded and fixed to the fixed bracket. This installation method has an accurate center point and reduces the difficulty of positioning during welding, ensuring the stability of the center of the entire fixed bracket and meeting the needs of the power pliers to accurately grab objects.

[0014] The outer wall of the center column is welded with a number of triangular reinforcing ribs to strengthen the connection strength between the connecting plate and the center column, reduce the possibility of separation between the connecting plate and the center column, improve the stability of the entire structure, and meet the needs of users for long-term use. The sling serves as a connecting component and is connected to the connection points of lifting equipment, robotic arms and other components to meet the needs of users to grab components through power tongs. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 This is a schematic diagram of the connection structure of the fixed bracket and the connecting plate of the utility model;

[0017] Figure 3 This is a schematic diagram of the connection structure between the hydraulic rod and the power tongs of the utility model.

[0018] In the figure: 1. fixed bracket; 2. hydraulic rod; 21. hydraulic delivery pipeline; 22. connecting arm; 23. telescopic long rod; 3. side baffle; 31. fixed shaft; 4. connecting plate; 41. stud; 42. center column; 43. reinforcing rib; 44. mounting arm. DETAILED DESCRIPTION

[0019] 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.

[0020] Embodiment 1

[0021] See also Figure 1-Figure 3 The utility model provides a technical solution: the control device of the hydraulic power tongs includes: a fixed bracket 1, a hydraulic rod 2 and a connecting plate 4, a plurality of side baffles 3 are welded around the outer wall of the fixed bracket 1, and the hydraulic rod 2 is movably connected to the inner wall of the upper end of the side baffle 3, a connecting plate 4 is set up in the middle of the upper end of the fixed bracket 1, a telescopic long rod 23 is slidably connected to the output end of the hydraulic rod 2, and a movably connected connecting arm 22 is fixed to the end of the telescopic long rod 23 and the hydraulic rod 2, and the two ends of the surface of the telescopic long rod 23 are connected with a hydraulic delivery pipeline 21 for delivering hydraulic oil, and a fixed shaft 31 is inserted into the connection between the side baffle 3, the hydraulic rod 2 and the power tongs. , and the hydraulic rod 2 and the power tongs are movably connected to the fixed shaft 31. The hydraulic rod 2 is used as a grabbing control component of the power tongs, and is connected to the power tongs and the side baffle 3 in a movably connected manner. When the user needs to control the power tongs to grab, the oil pump can be started, and the oil pump pumps hydraulic oil into the hydraulic rod 2, and the telescopic long rod 23 is pushed out by the piston, driving the power tongs on both sides to close inward to grab the objects. At the same time, when the oil pump draws out the hydraulic oil in the hydraulic rod 2, the hydraulic rod 2 is in a negative pressure state, and the telescopic long rod 23 contracts inward, driving the power tongs on both sides to expand outward to meet the demand for loosening the objects.

[0022] Embodiment 2

[0023] On the basis of the first embodiment, a pre-fixed stud 41 is fixed at the connection between the connecting plate 4 and the lower end of the fixing bracket 1, and the connecting plate 4 and the fixing bracket 1 are welded and fixed. A central column 42 is fixed to the middle of the upper end of the connecting plate 4, and a reinforcing rib 43 is welded around the outer wall of the central column 42. The bottom of the reinforcing rib 43 is welded to the connecting plate 4. A mounting arm 44 for equipment connection is welded to the top of the upper end of the central column 42. Several reinforcing ribs 43 are provided, and the reinforcing ribs 43 are distributed in a triangular shape. The connecting plate 4, the stud 41, the central column 42, the reinforcing rib 43 and the mounting arm 44 are used as mounting parts of the fixing bracket 1. The stud 41 is screwed into the middle through hole of the fixing bracket 1 in a pre-fixed manner. At the same time, the four sides of the connecting plate 4 are welded and fixed to the fixed bracket 1 by welding. This installation method has an accurate center point and reduces the difficulty of positioning during welding, ensuring the stability of the center of the entire fixed bracket 1, meeting the need for the power pliers to accurately grab objects. At the same time, a number of triangular reinforcing ribs 43 are welded to the outer wall of the center column 42 to strengthen the connection strength between the connecting plate 4 and the center column 42, reduce the possibility of separation between the connecting plate 4 and the center column 42, improve the stability of the entire structure, and meet the needs of users for long-term use. In addition, the mounting arm 44 is used as a connecting component to be connected to the connection points of lifting equipment, mechanical arms and other components to meet the needs of users to grab components through power pliers.

[0024] In actual use, the stud 41 is screwed into the middle through hole of the fixed bracket 1 by pre-fixing, and the four sides of the connecting plate 4 are welded and fixed to the fixed bracket 1 by welding. At this time, the mounting arm 44 is connected to the connection of the lifting equipment, mechanical arm and other components. The mounting arm 44 adopts an "I"-shaped design and can be accurately installed with most equipment. Then the user can start the oil pump, and the oil pump pumps the hydraulic oil into the hydraulic rod 2, and pushes out the telescopic long rod 23 by the piston, driving the power clamps on both sides to close inward to grab the objects. Finally, when the oil pump draws out the hydraulic oil in the hydraulic rod 2, the hydraulic rod 2 is in a negative pressure state, and the telescopic long rod 23 contracts inward, driving the power clamps on both sides to expand outward to meet the need to loosen the objects.

[0025] 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 control device for a hydraulic power tong, characterized in that: The control device of the hydraulic power tongs comprises: a fixed bracket (1), a hydraulic rod (2) and a connecting plate (4); a plurality of side baffles (3) are welded around the outer wall of the fixed bracket (1); the hydraulic rod (2) is movably connected to the inner wall of the upper end of the side baffle (3); a connecting plate (4) is mounted in the middle of the upper end of the fixed bracket (1); a telescopic long rod (23) is slidably connected to the output end of the hydraulic rod (2); and a movably connected connecting arm (22) is fixed to the ends of the telescopic long rod (23) and the hydraulic rod (2); and both ends of the surface of the telescopic long rod (23) are connected to a hydraulic delivery pipeline (21) for delivering hydraulic oil.

2. A control device for a hydraulic power tong according to claim 1, characterized in that: A fixed shaft (31) is inserted into the connection between the side baffle (3), the hydraulic rod (2) and the power tongs, and the hydraulic rod (2) and the power tongs are movably connected to the fixed shaft (31).

3. A control device for a hydraulic power tong according to claim 1, characterized in that: A pre-fixed stud (41) is fixed at the connection point between the connecting plate (4) and the lower end of the fixing bracket (1), and the connecting plate (4) and the fixing bracket (1) are fixed by welding.

4. A control device for hydraulic power tongs according to claim 3, characterized in that: A central column (42) is fixed at the middle of the upper end of the connection plate (4), and reinforcing ribs (43) are welded around the outer wall of the central column (42).

5. A control device for hydraulic power tongs according to claim 4, characterized in that: The bottom of the reinforcing rib (43) is fixed to the connecting plate (4) by welding, and a mounting arm (44) for connecting equipment is welded to the top of the upper end of the central column (42).

6. A control device for hydraulic power tongs according to claim 5, characterized in that: A plurality of reinforcing ribs (43) are provided, and the reinforcing ribs (43) are distributed in a triangular shape.

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