Electrically-driven movable pulley with clamping function

Abstract

The utility model relates to the technical field of moving tackles, in particular to an electrically-driven moving tackle with a clamping function, which comprises a moving tackle main body, a long slotted hole is arranged at the top of a base, an electric push rod is hinged in the long slotted hole, a pressing arm is hinged on the moving tackle main body, the tail end of the pressing arm is hinged with the electric push rod, and the electric push rod is hinged on the base. A clamping jaw is hinged to the end, away from the electric push rod, of the pressing arm, and the movable pulley body and the pressing arm are fixedly connected with the same extension spring. The movable pulley further comprises a limiting assembly, and the limiting assembly is used for limiting the motion trail of the movable pulley body. Through the arrangement of the pressing arm and the electric push rod, compared with a pulley and electric clamping mode in the prior art, the tubular column slipping phenomenon is avoided, the stability and reliability of the clamping process are ensured, the clamping device can be matched with existing automatic operation, and the operation efficiency and safety are improved.

Description

Technical Field

[0001] This utility model relates to the field of mobile trolley technology, and in particular to an electrically driven mobile trolley with clamping function. Background Technology

[0002] In oil well workover and drilling operations, the powered catwalk is a key piece of equipment for tubing transport, often facing the challenge of transporting heavy tubing. To address this, a mobile trolley system is commonly used in engineering to safely push and accurately retrieve the tubing, a design that ensures both operational efficiency and safety.

[0003] In existing technologies, mobile trolleys typically require manual placement of the tubing, followed by movement via a hydraulic motor or electric motor-driven mechanical transmission system and chain traction. However, because mobile trolleys lack tubing clamping capabilities, operation is not only time-consuming and labor-intensive, but also carries the risk of tubing slippage during manual loading and unloading, posing a serious safety hazard. Utility Model Content

[0004] The purpose of this invention is to solve the problem that existing mobile trolleys lack the function of clamping tubing, which not only makes operation time-consuming and labor-intensive, but also poses a risk of tubing slippage during manual loading and unloading, thus posing a serious safety hazard to operations. Therefore, this invention proposes an electrically driven mobile trolley with clamping function.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An electrically driven movable trolley with clamping function includes a movable trolley body, an elongated slot at the top of the movable trolley body, an electric push rod hinged within the elongated slot, a pressure arm hinged to the movable trolley body, the tail end of the pressure arm hinged to the electric push rod, a pawl hinged to the end of the pressure arm away from the electric push rod, and the movable trolley body and the pressure arm fixedly connected to the same tension spring; further comprising:

[0007] A limiting component that limits the movement trajectory of the moving trolley body.

[0008] Preferably, the limiting component includes an upper support roller and a lower support roller rotatably connected to the main body of the movable trolley, wherein the upper support roller and the lower support roller are offset in both the vertical and horizontal planes.

[0009] Preferably, the limiting component further includes a mounting plate fixedly connected to the bottom of the mobile trolley body, and a guide wheel is rotatably connected to the top surface of the mounting plate.

[0010] Preferably, the guide roller, the upper support roller, and the lower support roller are respectively arranged.

[0011] Preferably, a V-shaped shovel plate is hinged to the front end of the mobile trolley body, and a shock-absorbing rubber plate is provided on the V-shaped shovel plate.

[0012] Preferably, the upper support roller and the lower support roller are arranged in pairs, with the two upper support rollers respectively arranged on both sides of the V-shaped shovel plate, and the two lower support rollers respectively arranged on both sides of the V-shaped shovel plate.

[0013] Compared with the prior art, the advantages of this utility model are as follows:

[0014] 1. The mobile trolley power drive device is equipped with a clutch to realize the switching between master and follow functions, and can be used in conjunction with automated equipment;

[0015] 2. The movable trolley is equipped with an electric clamping device, which can hold the tubing, realizing coordinated movement between the trolley and the tubing when the trolley's main and follow-up actions are switched, thus preventing the tubing from slipping off.

[0016] 3. The mobile trolley clamping device is powered by a 24V battery, which can meet the needs of long-term operation. Using a battery pack eliminates the need for a cable chain, enabling wireless control of the clamping device and allowing it to be used with automated equipment.

[0017] 4. The moving trolley clamps mechanically via a tension spring and opens electrically, avoiding impact on the electric push rod when the clamping device moves with the tubing column, thus improving the service life of the electric push rod.

[0018] 5. The chuck is hinged to the pulley arm. The chuck type can be matched and replaced according to the tubing string type to meet the clamping or holding of tubing, casing, drill pipe, sucker rod and other tubing strings of different specifications.

[0019] 6. The mobile trolley uses a new energy source (rechargeable battery) as its power source, which can be remotely controlled, eliminating the need for external wiring (pipelines) and drag chains, thus reducing maintenance items;

[0020] 7. The shovel plate component that contacts the tube column is equipped with a shock-absorbing rubber plate, which reduces noise when the trolley and tube column meet and protects the threads at the tube end;

[0021] 8. Mobile trolleys can be widely used in tubular conveying equipment such as tube conveyors and powered catwalks. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of an electrically driven mobile trolley with clamping function proposed in this utility model;

[0023] Figure 2 This is a schematic diagram of an electric push rod in an electrically driven mobile trolley with clamping function proposed in this utility model;

[0024] Figure 3 This is a bottom view of an electrically driven mobile trolley with clamping function proposed in this utility model.

[0025] In the picture:

[0026] 1. Main body of the mobile trolley; 2. Electric push rod; 3. Pressure arm; 4. Tension spring; 5. Claw; 6. Upper support roller; 7. Guide and straightening roller; 8. Lower support roller; 9. V-shaped shovel plate; 10. Mounting plate. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Reference Figures 1-3 An electrically driven mobile trolley with clamping function includes a mobile trolley body 1. The top of the mobile trolley body 1 has an elongated slot, and an electric push rod 2 is hinged in the elongated slot. A pressure arm 3 is hinged on the mobile trolley body 1. The tail end of the pressure arm 3 is hinged to the electric push rod 2. A chuck 5 is hinged to the end of the pressure arm 3 away from the electric push rod 2. The mobile trolley is equipped with an electric clamping device. The electric clamping device clamps or holds tubing, casing, drill pipe, sucker rod and other tubing strings of different specifications through the chuck 5. The chuck 5 can be matched and replaced according to the type of tubing string.

[0029] The movable trolley body 1 and the pressure arm 3 are fixedly connected by the same tension spring 4. A V-shaped shovel plate 9 is hinged to the front end of the movable trolley body 1. The movable trolley is mounted on the V-shaped groove. When conveying the tube column, the male end of the tube column presses on the movable trolley, and the female end presses on the V-shaped groove. The tension spring 4 tightly holds the claw 5 at the lower end of the tube column. At this time, the tube column and the V-shaped shovel plate 9 of the movable trolley are parallel. The movable trolley pushes the tube column. After the female end of the tube column exceeds the V-shaped groove, the female end is lifted by a lifting clamp. After the female end of the tube column is lifted, the tube column tilts and rotates along the male end. The angle between the tube column and the V-shaped shovel plate 9 increases from small to large until the tube column disengages from the V-shaped shovel plate 9. When the tubing is tilted, it will generate an upward thrust on the chuck 5, which in turn will generate downward pressure on the electric actuator 2 through the pressure arm 3. This pressure can be offset by the long slot of the pressure arm 3 and will not act on the electric actuator 2, ensuring that the electric actuator 2 is always used under light load and improving the service life of the electric actuator 2.

[0030] The V-shaped shovel plate 9 is equipped with a shock-absorbing rubber plate to reduce noise when the trolley connects to the tube string and to protect the threads at the tube string end. A pressure sensor is installed on the V-shaped shovel plate 9 to detect whether a tube string is held in the V-shaped shovel plate 9. The movement of the electric push rod 2 is controlled according to the holding status of the tube string to achieve the lifting of the pressure arm 3. The pressure sensor is preferably, but not limited to, the Honeywell 26PC series.

[0031] The movable trolley also includes a limiting component, which limits the movement trajectory of the movable trolley body 1. The limiting component includes an upper support roller 6 and a lower support roller 8 rotatably connected to the movable trolley body 1, respectively. The upper support roller 6 and the lower support roller 8 are offset in both the vertical and horizontal planes. The limiting component also includes a mounting plate 10 fixedly connected to the bottom of the movable trolley body 1, and a guide centering roller 7 is rotatably connected to the top surface of the mounting plate 10. The guide centering roller 7 abuts against the side of the guide rail of the movable trolley to center the movable trolley body 1, so as to prevent the movable trolley body 1 from shaking or shifting when moving. The guide centering roller 7, the upper support roller 6, and the lower support roller 8 are symmetrically arranged, with a total of 4 sets.

[0032] The mobile trolley comes with its own 24V battery pack and control cabinet, enabling remote control without the need for external wiring (pipelines). This eliminates the need for external wiring (pipelines) and cable chains, reducing maintenance items. The battery pack also has a charging port, allowing operators to charge it via an external power source during breaks, ensuring the mobile trolley can operate for extended periods. This is existing technology and will not be elaborated upon further.

[0033] The functional principle of this utility model can be explained through the following operation methods:

[0034] The mobile trolley moves by having chains suspended on both sides of its main body 1. A hydraulic motor or electric motor drives the chains to propel the trolley forward or backward. The mechanical transmission device is equipped with a clutch, which switches the trolley's master / follower function by engaging or disengaging the clutch. An encoder detects the trolley's position, allowing the electronic control system to control the switching of the master / follower actions. The main body 1 of the mobile trolley, through its upper support rollers 6 and lower support rollers 8, closely engages with the guide rail to form a stable load-bearing structure. The guide rollers 7 are flush against the side of the guide rail, forming a three-point positioning system with the upper and lower support rollers, effectively preventing lateral shifting or swaying of the trolley during movement and ensuring the accuracy of the conveying path.

[0035] Tube string handover operation: When the tube string is hoisted to the working range of the pulley by the traveling trolley, the V-shaped shovel plate 9 supports the tube string through the high elastic shock-absorbing rubber plate installed on its surface, which can absorb the impact and reduce noise, and protect the threads of the tube end from damage; start the electric push rod 2, the electric push rod 2 extends, pushes the pressure arm 3 to press down around the hinge point, and drives the claw 5 to clamp or hold tube strings of different specifications.

[0036] Tube release: When the tube is delivered to the target position, the electric push rod 2 retracts, causing the chuck 5 to completely disengage from the tube, thus achieving safe release of the tube.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An electrically driven mobile trolley with clamping function, comprising a mobile trolley body (1), characterized in that, The top of the movable trolley body (1) is provided with a long slot, and an electric push rod (2) is hinged in the long slot. A pressure arm (3) is hinged on the movable trolley body (1). The tail end of the pressure arm (3) is hinged to the electric push rod (2). A pawl (5) is hinged to the end of the pressure arm (3) away from the electric push rod (2). The movable trolley body (1) and the pressure arm (3) are fixedly connected to the same tension spring (4). It also includes a limiting component, which limits the movement trajectory of the movable trolley body (1).

2. The electrically driven mobile trolley with clamping function according to claim 1, characterized in that, The limiting component includes an upper support roller (6) and a lower support roller (8) that are rotatably connected to the main body (1) of the movable trolley. The upper support roller (6) and the lower support roller (8) are offset in both the vertical and horizontal planes.

3. The electrically driven mobile trolley with clamping function according to claim 2, characterized in that, The limiting component also includes a mounting plate (10) fixedly connected to the bottom of the mobile trolley body (1), and a guide wheel (7) is rotatably connected to the top surface of the mounting plate (10).

4. The electrically driven mobile trolley with clamping function according to claim 3, characterized in that, The guide roller (7), upper support roller (6) and lower support roller (8) are symmetrically arranged, with a total of 4 sets.

5. The electrically driven mobile trolley with clamping function according to claim 4, characterized in that, The front end of the mobile trolley body (1) is hinged with a V-shaped shovel plate (9), and a shock-absorbing rubber plate is provided on the V-shaped shovel plate (9).

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