Special lifting appliance for electric telescopic steel pipe

Abstract

The utility model relates to the field of steel pipe lifting appliances, in particular to a special electric telescopic lifting appliance for steel pipes, which comprises a lifting appliance body and two clamping arms, a guide pipe is fixedly arranged on the lifting appliance body, the clamping arms can be mounted on the guide pipe in a horizontal sliding manner, and an inner pulling mechanism is fixedly arranged on the lifting appliance body. The inner pulling mechanism is used for moving the two clamping arms to synchronously move inwards or outwards, a clamping column used for being inserted into the steel pipe is fixedly arranged on each clamping arm, and according to the special lifting appliance for the electric telescopic steel pipe, the clamping arms are pulled by the inner pulling mechanism to horizontally move on the lifting appliance body, so that the special lifting appliance can adapt to clamping of the steel pipes of various lengths. And in the clamping process, whether pressing is in place or not is sensed through a clamping sensor, workers do not need to approach to observe, and the safety of the workers is guaranteed. And the fixed heat insulation plate and the displacement heat insulation plate isolate heat, heat radiation of the steel pipe can be prevented from being upwards transmitted to the lifting appliance, and the service life of the lifting appliance is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe lifting tools, specifically to a special lifting tool for electric telescopic steel pipes. Background Technology

[0002] When steel pipes need to be transferred under high temperatures, lifting equipment is required to hoist them to the target location. However, specialized steel pipe lifting equipment needs to be able to handle steel pipes of various lengths. Due to the high temperature of the steel pipe, the lifting equipment is prone to bending due to prolonged heating and cooling. Furthermore, if workers need to approach the steel pipe, the high temperature can easily cause burns. Therefore, it is necessary to design an electrically operated telescopic steel pipe lifting equipment that can accommodate steel pipes of various lengths, does not require workers to be close enough to observe the process, and prevents heat radiation from the steel pipe from being transferred upwards to the lifting equipment, thus extending the service life of the lifting equipment. Utility Model Content

[0003] The purpose of this utility model is to provide a special lifting tool for electric telescopic steel pipes.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] We provide a special electric telescopic steel pipe lifting tool, including a lifting tool body and two clamping arms. A guide tube is fixedly installed on the lifting tool body, and the clamping arms are horizontally slidable on the guide tube. An inner pull mechanism is fixedly installed on the lifting tool body. The inner pull mechanism is used to move the two clamping arms synchronously inward or outward. Each clamping arm is fixedly installed with a clamping column for insertion into the steel pipe.

[0006] Furthermore, a sliding rod is fixedly installed on the clamping arm, and the sliding rod is inserted into the guide tube.

[0007] Furthermore, two proximity switches are fixedly installed on the guide tube to sense the initial and final positions of the slide rod, and a sensing plate is fixedly installed on the slide rod for sensing by the proximity switches.

[0008] Furthermore, a clamping sensor is fixedly installed on the clamping arm, which is used to sense the contact between the end of the steel pipe and the clamping arm.

[0009] Furthermore, the clamping sensor includes a spring-opening mechanism, a pressure sensor, and a rotating plate that can be rotatably mounted on the clamping arm. The rotating plate has a clearance notch for the clamping post to pass through. The spring-opening mechanism is used to apply an elastic force away from the clamping arm to the rotating plate. The pressure sensor is fixedly mounted on the clamping arm. When the rotating plate rotates downward to a preset position, the rotating plate contacts the working end of the pressure sensor.

[0010] Furthermore, the clamping sensor includes a rotating plate, a guide seat, a guide rod, and a spring. One end of the guide rod is hinged to the rotating plate. The guide seat is fixedly installed on the clamping arm. The guide seat has a through hole that is larger than the diameter of the guide rod for the guide rod to pass through. One end of the spring abuts against the rotating plate, and the other end of the spring abuts against the guide seat.

[0011] Furthermore, the internal pulling mechanism includes two solenoids, two sleeves, a screw, and a rotary actuator. The two sleeves are fixedly installed on the two clamping arms, and the two solenoids are fixedly installed at the ends of the two sleeves. The screw is rotatably installed on the lifting device body. The lifting device body has positive and negative threads along its midsection to both sides. The two ends of the lifting device body are respectively engaged with the two solenoids. The rotary actuator is used to drive the middle part of the screw to rotate and is fixedly installed on the lifting device body.

[0012] Furthermore, the rotary drive includes a motor, a sprocket assembly, and a connecting tube. The connecting tube is rotatably mounted on the lifting device body via a sprocket. The connecting tube is fixedly connected to a screw. The motor is fixedly mounted on the lifting device body, and the output end of the motor is connected to the connecting tube via the sprocket assembly.

[0013] Furthermore, it also includes a fixed heat insulation plate and two displacement heat insulation plates. The fixed heat insulation plate is horizontally fixedly installed on the lifting device body, and the two displacement heat insulation plates are respectively fixedly installed on the two clamping arms. The fixed heat insulation plate and the displacement heat insulation plate are distributed vertically at intervals.

[0014] Furthermore, it also includes a cable winding device for winding up the cable on the pressure sensor.

[0015] The beneficial effects of this utility model are as follows: This electric telescopic steel pipe lifting device uses an internal pulling mechanism to move the clamping arm horizontally along the lifting device body, thus adapting to the clamping of steel pipes of various lengths. Furthermore, during the clamping process, a clamping sensor detects whether the clamping is in place, eliminating the need for workers to observe closely and ensuring worker safety. Additionally, the fixed and displacement heat insulation plates isolate heat, preventing heat radiation from the steel pipe from being transferred upwards to the lifting device, thereby extending the device's service life. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments of this utility model will be briefly introduced below.

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention in its fully opened state;

[0018] Figure 2 This is a three-dimensional structural diagram of the present invention in a partially opened state;

[0019] Figure 3This is a three-dimensional structural diagram of the present invention in its fully retracted state.

[0020] Figure 4 This is the front view of the present invention;

[0021] Figure 5 for Figure 1 Schematic diagram of local three-dimensional structure Figure 1 ;

[0022] Figure 6 for Figure 1 Schematic diagram of local three-dimensional structure Figure 2 ;

[0023] Figure 7 for Figure 1 Schematic diagram of local three-dimensional structure Figure 3 ;

[0024] Figure 8 for Figure 5 A magnified view of part A;

[0025] Figure 9 This is a schematic diagram of the three-dimensional structure of the rotating plate;

[0026] Figure 10 This is a structural illustration of several parts of this utility model;

[0027] In the diagram: 1. Lifting device body; 1a. Conduit; 1b. Pressure roller; 2. Clamping arm; 2a. Clamping column; 2b. Clamping sensor; 2b1. Rotating plate; 2b2. Guide seat; 2b3. Guide rod; 2b4. Spring; 2c. Slide rod; 3. Internal pulling mechanism; 3a. Helical tube; 3b. Sleeve; 3c. Screw; 3d. Motor; 3e. Sprocket assembly; 3f. Connecting sprocket; 5. Fixed heat insulation plate; 6. Displacement heat insulation plate; 7. Cable winding device; 8. Cable. Detailed Implementation

[0028] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0029] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product.

[0030] Reference Figures 1 to 10The electric telescopic steel pipe lifting device shown includes a lifting body 1 and two clamping arms 2. A guide tube 1a is fixedly mounted on the lifting body 1, and the clamping arms 2 are horizontally slidable on the guide tube 1a. An internal pulling mechanism 3 is fixedly mounted on the lifting body 1, which moves the two clamping arms 2 synchronously inward or outward. Each clamping arm 2 is fixedly equipped with a clamping post 2a for insertion into the steel pipe. When the steel pipe needs to be transferred at high temperatures, the clamping posts 2a move to both ends of the steel pipe, and then the internal pulling mechanism 3 controls the two clamping arms 2 to move inward, allowing the two clamping posts 2a to insert into the steel pipe, thus clamping the steel pipe. The lifting device can then be used to transfer the steel pipe to the desired location.

[0031] A sliding rod 2c is fixedly mounted on the clamping arm 2, and the sliding rod 2c is inserted into the guide tube 1a. The sliding connection between the lifting device body 1 and the clamping arm 2 is established through the insertion of the guide tube 1a and the sliding rod 2c. Several pressure rollers 1b are provided on the guide tube 1a to contact the sliding rod 2c, thereby reducing the resistance during the horizontal movement of the sliding rod 2c.

[0032] Two proximity switches are fixedly installed on the conduit 1a to sense the initial and final positions of the slide bar 2c. A sensing plate is fixedly installed on the slide bar 2c for sensing by the proximity switches. By setting two proximity switches, it is ensured that the inner pulling mechanism 3 has an initial and final position when driving the two clamping arms 2 to move horizontally, thus avoiding over-clamping and derailment between the slide bar 2c and the conduit 1a.

[0033] A clamping sensor 2b is fixedly installed on the clamping arm 2. The clamping sensor 2b is used to sense the contact between the end of the steel pipe and the clamping arm 2. During the clamping process of the steel pipe, the overall length of the steel pipe is relatively long, and the worker cannot observe from a distance whether it is clamped in place. Therefore, the clamping sensor 2b is needed to automatically sense the contact and eliminates the need for manual operation.

[0034] The clamping sensor 2b includes a spring-opening mechanism, a pressure sensor, and a rotating plate 2b1 rotatably mounted on the clamping arm 2. The rotating plate 2b1 has a clearance notch for the clamping post 2a to pass through. The spring-opening mechanism applies an elastic force away from the clamping arm 2 to the rotating plate 2b1. The pressure sensor is fixedly mounted on the clamping arm 2. When the rotating plate 2b1 rotates downwards to a preset position, it contacts the working end of the pressure sensor. When the steel pipe is pushed horizontally, the end of the steel pipe slides horizontally along the end of the clamping post 2a. Simultaneously, the end of the steel pipe pushes the rotating plate 2b1 to rotate and swing. When it rotates to the preset position, the rotating plate 2b1 contacts the pressure sensor, indicating that the steel pipe has been clamped to its final position.

[0035] The clamping sensor 2b includes a rotating plate 2b1, a guide seat 2b2, a guide rod 2b3, and a spring 2b4. One end of the guide rod 2b3 is hinged to the rotating plate 2b1. The guide seat 2b2 is fixedly mounted on the clamping arm 2. A through hole, larger than the diameter of the guide rod 2b3, is provided on the guide seat 2b2 for the guide rod 2b3 to pass through. One end of the spring 2b4 abuts against the rotating plate 2b1, and the other end abuts against the guide seat 2b2. The spring 2b4 pushes the rotating plate 2b1, allowing it to rotate and tilt upwards. The guide seat 2b2 and the guide rod 2b3 provide guidance for the rotating plate 2b1 and provide support for the spring 2b4.

[0036] The internal pulling mechanism 3 includes two solenoids 3a, two sleeves 3b, a screw 3c, and a rotary actuator. The two sleeves 3b are fixedly mounted on the two clamping arms 2, and the two solenoids 3a are fixedly mounted on the ends of the two sleeves 3b. The screw 3c is rotatably mounted on the lifting device body 1. The lifting device body 1 has positive and negative threads along its midsection to both sides. The two ends of the lifting device body 1 are respectively engaged with the two solenoids 3a. The rotary actuator is used to drive the middle part of the screw 3c to rotate and is fixedly mounted on the lifting device body 1. By controlling the rotary actuator, the screw 3c can be driven to rotate. The screw 3c will pull the two solenoids 3a to move inward or outward simultaneously through engagement, that is, it will pull the clamping arms 2 fixedly connected to the sleeves 3b to move horizontally.

[0037] The rotary drive includes a motor 3d, a sprocket assembly 3e, and a connecting tube 3f. The connecting tube 3f is rotatably mounted on the lifting device body 1 via a sprocket mount. The connecting tube 3f is fixedly connected to the screw 3c. The motor 3d is fixedly mounted on the lifting device body 1, and the output end of the motor 3d is connected to the connecting tube 3f via the sprocket assembly 3e. By controlling the motor 3d to operate, the sprocket assembly 3e is driven to rotate, which in turn drives the connecting tube 3f and the connected screw tube 3a, causing the screw 3c to rotate together.

[0038] It also includes a fixed heat insulation plate 5 and two displacement heat insulation plates 6. The fixed heat insulation plate 5 is horizontally fixedly installed on the lifting body 1, and the two displacement heat insulation plates 6 are respectively fixedly installed on the two clamping arms 2. The fixed heat insulation plate 5 and the displacement heat insulation plates 6 are distributed vertically at intervals. By setting the displacement heat insulation plates 6 and the fixed heat insulation plates 5, the heat of the steel pipe at the bottom is isolated, preventing heat from being conducted upward and damaging the clamp.

[0039] It also includes a cable winding device 7, which is used to wind up the cable 8 on the pressure sensor. The cable winding device 7 winds up the cable 8 to prevent the suspended cable from being snapped when the clamping arm 2 reciprocates.

[0040] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A special lifting tool for electric telescopic steel pipes, characterized in that, The device includes a lifting body (1) and two clamping arms (2). A guide tube (1a) is fixedly installed on the lifting body (1). The clamping arms (2) are horizontally slidably installed on the guide tube (1a). An inner pulling mechanism (3) is fixedly installed on the lifting body (1). The inner pulling mechanism (3) is used to move the two clamping arms (2) to move inward or outward synchronously. Each clamping arm (2) is fixedly equipped with a clamping column (2a) for insertion into the steel pipe.

2. The electric telescopic steel pipe lifting device as described in claim 1, characterized in that, A slide rod (2c) is fixedly installed on the clamping arm (2), and the slide rod (2c) is inserted into the guide tube (1a).

3. The electric telescopic steel pipe lifting tool as described in claim 2, characterized in that, Two proximity switches are fixedly installed on the conduit (1a) for sensing the initial and final positions of the slide bar (2c), and a sensing plate is fixedly installed on the slide bar (2c) for sensing by the proximity switches.

4. The electric telescopic steel pipe lifting device as described in claim 1, characterized in that, A clamping sensor (2b) is fixedly installed on the clamping arm (2). The clamping sensor (2b) is used to sense the contact between the end of the steel pipe and the clamping arm (2).

5. The electric telescopic steel pipe lifting device as described in claim 4, characterized in that, The clamping sensor (2b) includes a spring-opening mechanism, a pressure sensor, and a rotating plate (2b1) that can be rotatably mounted on the clamping arm (2). The rotating plate (2b1) has a clearance notch for the clamping post (2a) to pass through. The spring-opening mechanism is used to apply an elastic force away from the clamping arm (2) to the rotating plate (2b1). The pressure sensor is fixedly mounted on the clamping arm (2). When the rotating plate (2b1) rotates downward to a preset position, the rotating plate (2b1) contacts the working end of the pressure sensor.

6. The electric telescopic steel pipe lifting device as described in claim 5, characterized in that, The clamping sensor (2b) includes a rotating plate (2b1), a guide seat (2b2), a guide rod (2b3), and a spring (2b4). One end of the guide rod (2b3) is hinged to the rotating plate (2b1). The guide seat (2b2) ​​is fixedly installed on the clamping arm (2). The guide seat (2b2) ​​has a through hole that allows the guide rod (2b3) to pass through and is larger than the diameter of the guide rod (2b3). One end of the spring (2b4) abuts against the rotating plate (2b1), and the other end of the spring (2b4) abuts against the guide seat (2b2).

7. The electric telescopic steel pipe lifting device as described in claim 1, characterized in that, The internal pulling mechanism (3) includes two helical tubes (3a), two sleeves (3b), a screw (3c) and a rotary driver. The two sleeves (3b) are fixedly installed on the two clamping arms (2) respectively. The two helical tubes (3a) are fixedly installed at the ends of the two sleeves (3b) respectively. The screw (3c) is rotatably installed on the lifting body (1). The lifting body (1) has positive and negative threads along the middle section to both sides. The two ends of the lifting body (1) are respectively engaged with the two helical tubes (3a). The rotary driver is used to drive the middle part of the screw (3c) to rotate and is fixedly installed on the lifting body (1).

8. The electric telescopic steel pipe lifting device as described in claim 7, characterized in that, The rotary drive includes a motor (3d), a sprocket assembly (3e), and a connecting tube (3f). The connecting tube (3f) is rotatably mounted on the lifting device body (1) via a sprocket. The connecting tube (3f) is fixedly connected to the screw (3c). The motor (3d) is fixedly mounted on the lifting device body (1), and the output end of the motor (3d) is connected to the connecting tube (3f) via the sprocket assembly (3e).

9. The electric telescopic steel pipe lifting device as described in claim 1, characterized in that, It also includes a fixed heat insulation plate (5) and two displacement heat insulation plates (6). The fixed heat insulation plate (5) is horizontally fixed on the lifting body (1), and the two displacement heat insulation plates (6) are respectively fixed on the two clamping arms (2). The fixed heat insulation plate (5) and the displacement heat insulation plate (6) are distributed vertically at intervals.

10. The electric telescopic steel pipe lifting device as described in claim 5, characterized in that, It also includes a cable winding device (7) for winding up the cable (8) on the pressure sensor.

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