A pneumatic trolley for automatic unloading of forklift gantry

Abstract

The utility model discloses a pneumatic trolley for automatic unloading of forklift gantry, which relates to the technical field of forklift gantry transfer, including a trolley bottom plate, a driving mechanism and a pneumatic clamp supporting mechanism, wherein the driving mechanism is fixedly mounted on the trolley bottom plate, and drives the pneumatic trolley to walk on a slide rail; the pneumatic clamp supporting mechanism includes a lifting mechanism, a cylinder housing and a telescopic arm, wherein a cylinder housing is fixedly mounted on the top of the lifting mechanism, and supporting arms with hollow inner cavities are symmetrically mounted on both sides of the cylinder housing, and the telescopic arm includes a lower cantilever arm sleeved in the supporting arm and an upper cantilever arm supported on the outer upper end of the supporting arm, and a gear is fixedly mounted on the gear shaft at the open end of the supporting arm, and the gear is meshed with a rack at the bottom of the lower cantilever. The utility model has obvious advantages in terms of protecting the cylinder, improving safety, ensuring smooth movement and realizing synchronous control, and can effectively ensure stability and reliability during the working process.

Description

Technical Field

[0001] The utility model belongs to the technical field of forklift door frame transfer, and in particular relates to an automatic unloading pneumatic trolley for a forklift door frame. Background Art

[0002] In industrial production, forklift mast is a common equipment used to support and fix welding workpieces for welding operations. After welding is completed on the welding positioner, the forklift mast needs to be replaced for the next welding operation. At present, the forklift mast is usually replaced by a crane, but this method has the problems of slow speed and low work efficiency. Forklift mast automatic unloading pneumatic trolley is an automatic unloading equipment, which is usually used to remove products from the production line and transport them to the designated location.

[0003] However, the existing known forklift gantry transport trolleys, such as the mobile trolley for forklift gantry logistics transportation disclosed in patent CN217675196U, are provided with a mobile platform on the mobile trolley, and the forklift gantry is transported and transferred by the material receiving plate of the lifting material receiving mechanism. The lifting material receiving mechanism on the mobile trolley needs to remain stable during the movement to avoid the structural parts not being received in place or other problems due to vibration or instability. However, this solution has obvious stability problems. For example, if the forklift gantry is only transported by the material receiving plate, the material receiving plate, as the only supporting structure, cannot provide sufficient stability and support force, causing the forklift gantry to shake, tilt or swing during transportation, increasing the risk of accidental damage or personal injury; and with the increase of years of use, the carrying capacity of the material receiving plate continues to decline, which can easily cause the material receiving plate to deform, break or fail, making it impossible to safely transport the forklift gantry or causing equipment damage.

[0004] Based on this, the present invention provides a pneumatic trolley for automatic unloading of forklift gantry, which can effectively avoid the stability problem existing in the existing forklift gantry transport trolley solution. The new pneumatic trolley can improve production efficiency and reduce labor costs, while reducing the risks in the forklift gantry transportation process. Utility Model Content

[0005] Aiming at the problems of slow speed and low working efficiency when replacing the forklift mast by hoisting the forklift mast by a crane, as well as the defects and problems of weak stability, low stability and high risk of the existing forklift mast transport trolley, the utility model provides a pneumatic trolley for automatic unloading of forklift masts.

[0006] The solution adopted by the utility model to solve the technical problem is: a pneumatic trolley for automatic unloading of forklift gantry, including a pneumatic trolley for automatic unloading of forklift gantry, including a trolley bottom plate, a driving mechanism and a pneumatic clamp supporting mechanism, the driving mechanism is fixedly installed on the trolley bottom plate, driving the pneumatic trolley to walk on the slide rail; the pneumatic clamp supporting mechanism is also symmetrically installed on the trolley bottom plate, the pneumatic clamp supporting mechanism includes a lifting mechanism, a cylinder cover and a telescopic arm, the lifting mechanism is fixedly installed on the trolley bottom plate through a support seat, and the lifting mechanism is fixedly installed on the trolley bottom plate through a support seat. A cylinder cover is fixedly installed on the top of the mechanism, and supporting arms with hollow inner cavities are symmetrically installed on both sides of the cylinder cover. The telescopic arm includes a lower cantilever sleeved in the supporting arm and an upper cantilever supported on the outer upper end of the supporting arm, and the front ends of the upper cantilever and the lower cantilever are fixedly connected together; a gear shaft is rotatably installed on the open end of the supporting arm, and a gear is fixedly installed on the gear shaft, and the gear is meshed with a rack at the bottom of the lower cantilever; the gear shaft is externally connected to a drive motor, and the drive motor is synchronously controlled to rotate by a controller.

[0007] As a preferred technical solution of the utility model, the driving mechanism includes a pneumatic motor, which is installed at one end of the trolley bottom plate, and its output end is connected to a transmission shaft. The left and right ends of the transmission shaft are respectively connected to active rollers, and the active rollers are respectively connected to the slide rails on the ground; two driven rollers are also provided at the other end of the trolley bottom plate, and the two driven rollers are also respectively connected to the two slide rails.

[0008] As an optimal technical solution of the utility model, the support seat is perpendicular to the bottom plate of the trolley and extends upward, a lifting cylinder is vertically installed in the inner cavity of the support seat, and a cylinder cover is fixed on the top; the interior of the cylinder cover is a trapezoidal structure, and the fixed sleeve is mounted outside the lifting cylinder.

[0009] As a preferred technical solution of the utility model, the top of the upper cantilever close to the open end of the supporting arm is vertically extended upward and fixed with a cantilever guardrail; mounting plates are fixed on both sides of the open end of the supporting arm, and a gear shaft is rotatably installed in the mounting plate through a first bearing.

[0010] As a preferred technical solution of the utility model, second bearings are symmetrically mounted on the gear shafts on both sides of the gear, and the outer diameter of the second bearing is greater than the width of the rack at the bottom of the lower cantilever.

[0011] As a preferred technical solution of the utility model, a buffer mechanism is respectively provided at the initial and terminal positions of the pneumatic trolley, and the buffer mechanism includes a buffer seat, and rubber-structured buffer pads are respectively provided on the two buffer seats in the direction toward the active roller and the driven roller; a cable retractor and an air pipe retractor are also provided at the terminal position of the pneumatic trolley.

[0012] As a preferred technical solution of the utility model, a rolling limit device is also provided on one end of the upper cantilever close to the cylinder cover, and a limiting protrusion is also provided on the top surface of the supporting arm close to the position of the lower cantilever. In a natural state, when the lower cantilever moves outward from the supporting arm until the rolling limit device on the upper cantilever abuts against the limiting protrusion, the extension movement of the lower cantilever can be stopped.

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

[0014] The present invention provides an automatic unloading pneumatic trolley for a forklift mast, in which the trapezoidal structure and the fixed sleeve design of the cylinder cover can effectively protect the lifting cylinder and prevent the cylinder from being bumped when lifting the workpiece, thereby improving the service life and safety of the cylinder; the design of the upper cantilever guardrail can block and protect the forklift mast to avoid accidental collision or damage, ensuring that the forklift mast will not shake, tilt or swing during transportation, reducing the risk of accidental damage or personal injury, and enhancing the safety and stability of the workpiece.

[0015] The design of the new gear shaft, gear and rack ensures that the reciprocating motion of the lower cantilever is smooth and without offset, thereby improving the stability and precision of the pneumatic clamp; the drive motor is synchronously controlled by the controller, thereby realizing the synchronization of the telescopic motion of the lower cantilever in the two supporting arms, thereby ensuring the consistency and precision of the clamp movement; the setting of the new middle telescopic arm provides a stronger load-bearing capacity, thereby ensuring that the stability and support force can be maintained even after long-term use, thereby avoiding equipment failure due to reduced load-bearing capacity.

[0016] The new pneumatic trolley for automatic unloading of forklift gantry can effectively solve the problems of low stability, high safety risk and weak stability of existing forklift gantry transport trolleys, further improve production efficiency, reduce risks and enhance operational safety. It has the advantages of simple structure, convenient operation and high unloading efficiency, and is suitable for automatic unloading operations on factory production lines. At the same time, the new model has obvious advantages in protecting the cylinder, improving safety, ensuring smooth movement and achieving synchronous control, which can improve the performance and reliability of the equipment, realize precise control of the unloading process and ensure stability and reliability during the work process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view structural schematic diagram of the utility model;

[0018] Figure 2 It is a schematic diagram of the top view structure of the utility model;

[0019] Figure 3 It is a front view structural schematic diagram of the pneumatic clamp supporting mechanism;

[0020] Figure 4It is a side structural schematic diagram of the support arm of the utility model.

[0021] In the figure: 1-pneumatic motor, 2-driving roller, 3-driven roller, 4-trolley bottom plate, 5-pneumatic clamp supporting mechanism, 6-buffer seat, 7-trachea retractor, 8-cable retractor, 9-slide rail, 10-roller, 11-transmission shaft, 12-buffer pad, 13-support seat, 14-pneumatic clamp body, 15-lifting cylinder, 16-cylinder cover, 17-support arm, 18-upper cantilever, 19-lower cantilever, 20-mounting plate, 21-rolling limit device, 22-cantilever guardrail, 23-first bearing, 24-second bearing, 25-gear, 26-rack, 27-drive motor, 28-gear shaft. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings and embodiments. Example

[0023] The present embodiment provides a pneumatic trolley for automatic unloading of forklift gantry, including a trolley bottom plate 4, a driving mechanism, a pneumatic clamp supporting mechanism 5 and a buffer mechanism. The trolley bottom plate is made of a sturdy and durable metal material, and has sufficient load-bearing capacity and stability to support the operation and unloading operation of the entire pneumatic trolley. The driving mechanism includes an air motor 1, which is installed at one end of the trolley bottom plate, and its output end is connected to a transmission shaft 11, and the left and right ends of the transmission shaft are respectively connected to active rollers 2, and the active rollers are respectively connected to the slide rails 9 on the ground and travel on the slide rails along the extension direction of the slide rail path. Two driven rollers 3 are also provided at the other end of the trolley bottom plate, and the two driven rollers are also connected to the two slide rails 9 respectively, so that when the controller drives the air motor 1 to work, it can drive the rotation of the two active rollers, thereby realizing the movement of the trolley bottom plate along the slide rail.

[0024] A pneumatic clamp support mechanism is also symmetrically installed on the bottom plate of the trolley to support the forklift mast. Figure 1-4 As shown, the pneumatic clamp support mechanism includes a support seat 13, a support arm 17, a telescopic arm, a lifting cylinder 15 and a cylinder cover 16. The support seat is perpendicular to the bottom plate of the trolley and extends upward. The lifting cylinder 15 is vertically installed in the inner cavity of the support seat. The top fixed sleeve is provided with a cylinder cover 16. The cylinder cover has a trapezoidal structure inside and is fixedly mounted outside the lifting cylinder to prevent the lifting cylinder from being bumped when the workpiece is hoisted, which can effectively protect the cylinder. In addition, in actual use, a regulating valve can be configured at the connection of the cylinder cover at the top output end of the lifting cylinder, which can be used to adjust the telescopic speed of the starting clamp and improve the safety of the clamp support.

[0025] Support arms 17 are symmetrically mounted on both sides of the cylinder housing. The support arms are hollow in structure, one end of which is welded and fixed to the cylinder housing, and the other end of which is provided with an opening. Figure 3 The telescopic arm includes a lower cantilever 19 mounted inside the supporting arm and an upper cantilever 18 supported on the outer upper end of the supporting arm, and the upper cantilever and the lower cantilever are fixedly connected at the front end, and the length of the lower cantilever is slightly greater than that of the upper cantilever. A cantilever guardrail 22 is fixedly extended vertically upward at the top of the upper cantilever near the open end of the supporting arm, which is used to block and protect the forklift gantry on the upper cantilever and to clamp and fix it.

[0026] A mounting plate 20 is fixed on both sides of the open end of the support arm, and a gear shaft 28 is rotatably mounted in the mounting plate through a first bearing 23. A gear 25 is fixedly mounted in the middle of the gear shaft between the two mounting plates, and second bearings 24 are symmetrically mounted on the gear shafts on both sides of the gear. The lower cantilever 19 is located above the gear, and a rack 26 is fixedly mounted at the bottom of the lower cantilever along the extension direction of the lower cantilever path, and the rack is meshed with the gear 25 on the gear shaft. The outer diameter of the second bearing on both sides of the gear is slightly larger than the width of the rack at the bottom of the lower cantilever, so that the rack of the lower cantilever is always meshed with the gear and is always located between the two second bearings, ensuring smooth reciprocating motion of the lower cantilever without deviation. The two ends of the gear shaft extend outward from the mounting plates on both sides of the support arm respectively, and one end is connected to a drive motor 27, and the drive motors on the support arms on both sides of the cylinder housing are synchronously controlled by the controller to synchronously realize the telescopic motion of the lower cantilever in the two support arms.

[0027] Furthermore, in order to further ensure the stability of the pneumatic trolley during the forward and backward movement, a buffer mechanism is provided at the initial and final positions of the pneumatic trolley, and the buffer mechanism includes a buffer seat 6, and the two buffer seats are provided with rubber structure buffer pads in the direction of the active roller and the driven roller. Such a setting is used to provide effective buffering and shock absorption functions during the start, stop or forward and backward movement of the pneumatic trolley, avoid impact and vibration caused by inertia or sudden stop, protect the pneumatic trolley and the forklift mast above the clamp from damage, and improve the stability and reliability of the pneumatic trolley.

[0028] like Figure 2 As shown, the present invention is also equipped with a cable retractor 8 and an air tube retractor 7 at the end position of the pneumatic trolley when in use, which are used to automatically retract and release the cables and air tubes during the reciprocating movement of the pneumatic trolley along the slide rail, to prevent the cables or air tubes from getting tangled together and hindering the movement of the trolley during movement. In actual use, the positions of the two can be adaptively adjusted according to the on-site conditions, so that the cables and air tubes can be smoothly retracted and released without being interfered by other components.

[0029] The invention provides an automatic unloading pneumatic trolley for a forklift gantry. When in use, after the forklift gantry is welded by the welding positioner and turned 180 degrees downward, the pneumatic motor on the pneumatic trolley is controlled by a controller to drive the trolley to move from the initial position to the positioner direction along the slide rail, and stop after moving to the bottom of the positioner. Then the lifting cylinder is controlled to move upward and drive the upper pneumatic clamp to rise to the middle of the forklift gantry. Then the driving motors on the two supporting arms are driven by the controller to move synchronously, so that the telescopic arm extends from the inner cavity of the supporting arm, and the extension size of the lower cantilever is adaptively adjusted according to the width of the forklift gantry, and then the lifting cylinder is driven to move upward. After the upper cantilever supports the forklift gantry, the clamp on the positioner is released, and the forklift gantry is supported by the telescopic arm. Then the lifting cylinder is controlled to descend, and the trolley is driven by the pneumatic motor to return and leave the positioner. In the process of reciprocating movement of the pneumatic trolley, the cable retractor and the air pipe retractor automatically retract and release the cables and wire pipes as the trolley moves to prevent entanglement.

[0030] The new pneumatic trolley for automatic unloading of forklift gantry has the advantages of simple structure, convenient operation and high unloading efficiency, and is suitable for automatic unloading operations on factory production lines. At the same time, the new model has obvious advantages in protecting the cylinder, improving safety, ensuring smooth movement and achieving synchronous control, which can improve the performance and reliability of the equipment, realize precise control of the unloading process, and ensure stability and reliability during the work process. Example

[0031] On the basis of Example 1, the similarities between this embodiment and Example 1 are no longer repeated, and the difference is that a rolling limit device 21 is further provided on one end of the upper cantilever close to the cylinder housing, and the rolling limit device includes a roller rotatably installed on the upper cantilever, so that the upper cantilever can reciprocate on the top of the supporting arm through the roller, and a limiting protrusion is also provided on the top surface of the supporting arm close to the position of the lower cantilever. When working, the lower cantilever moves outward from the supporting arm until the rolling limit device on the upper cantilever abuts against the limiting protrusion, reaching the limit position of the telescopic movement of the lower cantilever, and the extension movement of the lower cantilever can be stopped.

[0032] On the one hand, such a setting can prevent the lower cantilever from extending outward too long during movement and slipping out of the supporting arm, thereby causing a safety accident. On the other hand, it can ensure that the lower cantilever has a preset minimum set length in the supporting arm, thereby ensuring the load-bearing capacity of the telescopic arm, and then ensuring that the lower cantilever can accurately and stably reach the required position during operation, thereby improving the operating accuracy and safety of the pneumatic trolley.

[0033] The above description is only a preferred embodiment of the present invention and does not limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A pneumatic trolley for automatic unloading of forklift gantry, comprising a trolley bottom plate, a driving mechanism and a pneumatic clamp supporting mechanism, wherein the driving mechanism is fixedly mounted on the trolley bottom plate to drive the pneumatic trolley to move on the slide rail; the pneumatic clamp supporting mechanism is also symmetrically mounted on the trolley bottom plate, and is characterized in that: The pneumatic clamp supporting mechanism includes a lifting mechanism, a cylinder cover and a telescopic arm. The lifting mechanism is fixedly mounted on the bottom plate of the trolley through a support seat, and the cylinder cover is fixedly mounted on the top of the lifting mechanism. Supporting arms with hollow inner cavities are symmetrically mounted on both sides of the cylinder cover. The telescopic arm includes a lower cantilever mounted in the supporting arm and an upper cantilever supported on the outer upper end of the supporting arm, and the upper cantilever and the lower cantilever are fixedly connected together at the front end; a gear shaft is rotatably mounted on the open end of the supporting arm, and a gear is fixedly mounted on the gear shaft, and the gear is meshed with a rack at the bottom of the lower cantilever; the gear shaft is externally connected to a drive motor, and the drive motor is synchronously controlled to rotate by a controller.

2. The automatic unloading pneumatic trolley for forklift mast according to claim 1 is characterized by: The driving mechanism includes an air motor, which is installed at one end of the trolley bottom plate, and its output end is connected to a transmission shaft. The left and right ends of the transmission shaft are respectively connected to active rollers, and the active rollers are respectively connected to the slide rails on the ground; two driven rollers are also provided at the other end of the trolley bottom plate, and the two driven rollers are also respectively connected to the two slide rails.

3. The automatic unloading pneumatic trolley for forklift mast according to claim 1 is characterized by: The support seat is perpendicular to the bottom plate of the trolley and extends upward. A lifting cylinder is vertically installed in the inner cavity of the support seat, and a cylinder cover is fixed on the top. The interior of the cylinder cover is a trapezoidal structure and is fixedly sleeved outside the lifting cylinder.

4. The automatic unloading pneumatic trolley for forklift mast according to claim 1 is characterized by: A cantilever guardrail is fixedly extended vertically upwards on the top of the upper cantilever near the open end of the supporting arm; mounting plates are fixedly provided on both sides of the open end of the supporting arm, and a gear shaft is rotatably mounted in the mounting plate through a first bearing.

5. The automatic unloading pneumatic trolley for forklift mast according to claim 1 is characterized by: Second bearings are symmetrically mounted on the gear shafts on both sides of the gear, and the outer diameter of the second bearing is greater than the width of the rack at the bottom of the lower cantilever.

6. The automatic unloading pneumatic trolley for forklift mast according to claim 1 is characterized by: The pneumatic trolley is also provided with a buffer mechanism at the initial and terminal positions, respectively. The buffer mechanism includes a buffer seat, and the two buffer seats are provided with rubber-structured buffer pads in the direction toward the active roller and the driven roller respectively; the pneumatic trolley is also provided with a cable retractor and an air pipe retractor at the terminal position.

7. The automatic unloading pneumatic trolley for forklift mast according to claim 1 is characterized by: A rolling limit device is also provided on one end of the upper cantilever close to the cylinder housing, and a limiting protrusion is also provided on the top surface of the supporting arm close to the position of the lower cantilever. In a natural state, when the lower cantilever moves outward from the supporting arm until the rolling limit device on the upper cantilever abuts against the limiting protrusion, the extension movement of the lower cantilever can be stopped.

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