Elevator platform locking device

Abstract

The utility model relates to an elevator platform locking device which comprises a guide seat installed on an elevator platform, a sliding push rod is connected in the guide seat in a sliding mode, a movable rack is fixedly connected to the sliding push rod, a fixed rack is fixedly connected to a vertical support of an elevator, the fixed rack vertically extends, the movable rack is meshed with the fixed rack, and the movable rack is fixedly connected with the movable rack. The driving mechanism drives the sliding push rod to slide in the guide base in the left-right direction, a plurality of guide sleeves are installed in the guide base, the sliding push rod is connected in the guide sleeves in a sliding mode, the driving mechanism comprises an oil cylinder hinged to the lifting platform, the oil cylinder extends in the left-right direction, and the movable end of the oil cylinder is hinged to the sliding push rod. A jackscrew hole is formed in the outer wall of the guide seat, a jackscrew extending to the outer wall of the guide sleeve is in threaded connection with the interior of the jackscrew hole, and the stability of the lifting platform after the lifting platform reaches the designated position can be effectively locked by introducing the lifting platform locking device.

Description

Technical Field

[0001] The utility model relates to the field of elevator equipment, in particular to the field of elevator platforms, and specifically refers to a locking device for an elevator platform. Background Art

[0002] The hoist is a lifting mechanical device or device on a platform or semi-enclosed platform that carries people or goods up and down vertical channels. It is an integral part of the platform, operating equipment, motors, cables and other auxiliary equipment. It is widely used in aerial work. In the field of modern industry and construction, the lifting platform is an important equipment for vertical transportation. The stability and safety of its performance are directly related to work efficiency and personnel safety.

[0003] In the prior art, after the lift platform is raised or lowered to its proper position, it often relies on the brake device of the lifting mechanism to maintain the level position. This reliance is effective in most cases, but in the face of complex and changeable working conditions, especially when the weight of the items carried on the lift platform changes significantly, such as when it is fully loaded or unloaded, the brake device often cannot fully ensure the stability of the platform, resulting in deviations in the level position and even possible safety accidents. Utility Model Content

[0004] The utility model aims at the deficiencies of the prior art and provides a lifting platform locking device. By introducing the lifting platform locking device, the stability of the lifting platform after reaching a specified position can be effectively locked.

[0005] The utility model is realized through the following technical scheme, which provides a lifting platform locking device, including a guide seat installed on the lifting platform, a sliding push rod slidingly connected in the guide seat, a moving rack fixedly connected to the sliding push rod, a fixed rack fixedly connected to the vertical support of the lift, the fixed rack vertically extending, the moving rack meshing with the fixed rack, and also includes a driving mechanism for driving the sliding push rod to slide in the guide seat along the left and right directions.

[0006] The utility model provides a guide seat as a guide and support component for the sliding push rod to ensure that the sliding push rod maintains a stable trajectory and direction during the movement. The moving push rod slides in the guide seat along the left and right directions, and its movement drives the moving rack to engage or disengage with the fixed rack, thereby realizing the locking or unlocking of the lift platform. The moving rack is fixed to the sliding push rod and moves with the movement of the sliding push rod. When the moving rack engages with the fixed rack, it can prevent the lift platform from moving in the vertical direction, thereby realizing the locking function. The driving mechanism is used for driving the sliding push rod to slide in the guide seat along the left and right directions, thereby controlling the engagement or disengagement of the moving rack with the fixed rack.

[0007] As an optimization, a plurality of guide sleeves are installed in the guide seat, and the sliding push rod is slidably connected in the guide sleeve. The setting of this optimization scheme greatly improves the stability and accuracy of the sliding push rod during movement, reduces the instability caused by friction or shaking, and thus ensures the reliability of the locking device.

[0008] As an optimization, the driving mechanism includes an oil cylinder hinged on the lifting platform, the oil cylinder extends in the left and right directions, and the movable end of the oil cylinder is hinged to the sliding push rod. The setting of this optimization scheme simplifies the transmission structure and makes the driving process more direct and efficient. At the same time, the hinged installation method of the oil cylinder is also convenient for adjustment and maintenance, which improves the flexibility and durability of the device.

[0009] As an optimization, a bottom plate is fixedly connected to the lower end surface of the lifting platform, the guide seat is fixedly connected to the bottom plate, and the oil cylinder is hinged to the bottom plate. The setting of this optimization scheme simplifies the installation process and improves the integration of the entire locking device, making the structure of the entire device more compact and reasonable.

[0010] As an optimization, a top screw hole is provided on the outer wall of the guide seat, and a top screw extending to the outer wall of the guide sleeve is connected to the inner thread of the top screw hole. The setting of this optimization scheme facilitates the installation of the guide sleeve, and the guide sleeve can be fixed in the guide seat by tightening the top screw, which makes the installation more convenient and quick, and is convenient for daily maintenance.

[0011] As an optimization, a mounting groove is provided on the left end surface of the sliding push rod, and the movable rack is installed in the mounting groove. The setting of this optimization scheme makes the installation of the movable rack more convenient and quick, and also improves the connection strength and stability between the rack and the push rod.

[0012] As an optimization, two guide sleeves are provided, and one guide sleeve is installed on each of the left and right sections of the guide seat. The setting of this optimization scheme not only enhances the guiding effect, but also makes the sliding push rod more evenly stressed during the movement, reducing wear and failure caused by eccentric loading.

[0013] The beneficial effects of the utility model are as follows: the utility model significantly improves the stability and safety of the platform after reaching the designated position. Through the precise meshing of the mobile rack and the fixed rack, the platform position deviation caused by the weight change of the object is effectively prevented, and the accuracy of the leveling position is ensured. At the same time, the flexible control of the drive mechanism makes the locking and unlocking process quick and reliable, further enhancing the convenience and safety of the equipment. The overall structural design is reasonable and easy to maintain, which prolongs the service life of the equipment and provides a solid guarantee for the safe operation of the lift. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a bottom view of the utility model;

[0016] Figure 3 It is a top view of the sliding push rod;

[0017] Figure 4 This is the front view of the fixed rack;

[0018] Figure 5 This is the main view of the mobile rack;

[0019] As shown in the figure:

[0020] 1. Base plate, 2. Guide seat, 3. Pin seat, 4. Sliding push rod, 5. Guide sleeve, 6. Top screw, 7. Cylinder, 8. Fixed rack, 9. Moving rack. DETAILED DESCRIPTION

[0021] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0022] like Figures 1 to 5 The utility model shown is a lifting platform locking device, including a guide seat 2 installed on the lifting platform, a bottom plate 1 is fixedly connected to the lower end surface of the lifting platform, the bottom plate 1 extends in the left-right direction, the upper end surface of the bottom plate 1 is welded to the lower end surface of the lifting platform, the guide seat 2 is fixed to the bottom plate 1, the guide seat extends in the left-right direction, and the upper end surface of the guide seat is welded to the lower end surface of the bottom plate 1.

[0023] A guide hole is provided on the left end surface of the guide seat 2, which penetrates the guide seat in the left-right direction. A plurality of guide sleeves 5 are installed in the guide seat. The guide sleeves extend in the left-right direction and are installed in the guide hole. The inner hole of the guide sleeve is rectangular or long waist-shaped. Two guide sleeves are provided, and a guide sleeve 5 is installed on each of the left and right sections of the guide seat 2.

[0024] A top screw hole is provided on the outer wall of the guide seat 2. The top screw hole is provided on the lower end surface of the guide seat. The top screw hole extends in the up and down directions and extends to the guide hole. Two top screw holes are provided. The top screw holes are located directly below the guide sleeve 5. The top screw holes are threadedly connected with a top screw 6 extending to the outer wall of the guide sleeve 5. The upper end surface of the top screw 6 contacts the lower end surface of the guide sleeve 5. By tightening the top screw 6, the guide sleeve 5 can be pressed into the guide seat 2.

[0025] A sliding push rod 4 is slidably connected in the guide seat 2, and the sliding push rod 4 extends in the left and right directions. The sliding push rod 4 is slidably connected in the guide sleeve 5. The sliding push rod is rectangular or long waist-shaped. The cross-section of the sliding push rod 4 is the same as the inner hole of the guide sleeve 5, and the outer wall of the sliding push rod is in contact with the inner wall of the guide sleeve. A mounting groove is provided on the left end face of the sliding push rod, and the mounting groove penetrates the sliding push rod 4 in the up-down direction. Pin shaft holes are respectively provided on the front and rear end faces of the sliding push rod, and the pin shaft holes extend in the front-to-back direction. The pin shaft holes extend to the mounting groove, and a hinge groove is provided on the right end of the sliding push rod, and the hinge groove penetrates the sliding push rod 4 in the up-and-down direction. Rear hinge holes are respectively provided on the front and rear end faces of the sliding push rod, and the rear hinge holes extend in the front-to-back direction and extend to the hinge groove.

[0026] A movable rack 9 is fixedly connected to the sliding push rod 4. The movable rack 9 extends in the up-down direction, with the rack opening facing the left side. A mounting hole extending in the front-to-back direction is provided on the movable rack 9. The movable rack is installed in the mounting groove. The mounting hole is coaxial with the pin shaft hole. The rear end face of the movable rack 9 fits with the rear end face of the mounting groove. The front-to-back width of the movable rack 9 is equal to the front-to-back width of the mounting groove. The movable rack 9 and the sliding push rod 4 are connected together by a pin shaft passing through the pin shaft hole and the mounting hole.

[0027] A fixed rack 8 is fixed to the vertical bracket of the elevator. The fixed rack 8 extends vertically. The fixed rack 8 includes a vertical plate and a vertical rack. The vertical plate extends in the up-down direction. The vertical plate is fixed to the vertical bracket of the elevator by bolts. A vertical rack is provided on the right end face of the vertical plate. The vertical rack is integrally formed with the vertical plate. The vertical rack extends in the up-down direction. The opening of the vertical rack faces to the right. The movable rack is engaged with the fixed rack 8.

[0028] The present embodiment also includes a driving mechanism for driving the sliding push rod 4 to slide in the guide seat along the left and right directions. The driving mechanism includes an oil cylinder 7 hinged on the lifting platform. The oil cylinder 7 extends in the left and right directions. The right end of the oil cylinder 7 is hinged on the lower end surface of the base plate 1 through a pin shaft seat, so that the oil cylinder is hinged to the lifting platform. The hinge shaft on the pin shaft seat extends in the front and rear directions. The movable end of the oil cylinder is hinged to the sliding push rod 4, that is, the left end of the oil cylinder is hinged to the right end of the sliding push rod 4. The movable end of the oil cylinder is fixedly connected with a hinge block, and the left end of the hinge block is installed in the hinge groove. A front hinge hole extending in the front and rear directions is provided on the hinge block. The front hinge hole is coaxial with the rear hinge hole. A hinge shaft is rotatably connected in the front hinge hole. Both ends of the hinge shaft are installed in the rear hinge hole, so that the hinge block is hinged to the sliding push rod, so that the right end of the sliding push rod is hinged to the movable end of the oil cylinder, and the distance from the hinge shaft to the left end of the hinge groove is greater than the distance from the hinge shaft to the left end of the hinge block to ensure smooth articulation.

[0029] During use of this embodiment, when the lift platform rises or descends to a certain position and stops, the sliding push rod 4 is pushed by the oil cylinder 7 to extend along the guide sleeve 5, driving the moving rack 9 to engage with the fixed rack 8 to lock the lift platform, and the position of the lift platform can remain unchanged when loading and unloading items on the lift platform. When the lift platform needs to rise or fall, the sliding push rod 4 is pulled back along the guide sleeve 5 by the oil cylinder 7, driving the moving rack 9 to separate from the fixed rack 8, and the lift platform rises or falls along the vertical bracket under the traction force of the lifting device.

[0030] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved by or by adopting the existing technology, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not deviate from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A lifting platform locking device, characterized in that: The invention comprises a guide seat (2) installed on the platform of the elevator, a sliding push rod (4) is slidably connected in the guide seat, a movable rack (9) is fixedly connected to the sliding push rod, a fixed rack (8) is fixedly connected to the vertical support of the elevator, the fixed rack (8) extends vertically, the movable rack is meshed with the fixed rack (8), and a driving mechanism is also included for driving the sliding push rod (4) to slide in the left-right direction in the guide seat.

2. The locking device for a lift platform according to claim 1, characterized in that: A plurality of guide sleeves (5) are installed in the guide seat, and the sliding push rod (4) is slidably connected in the guide sleeves (5).

3. The locking device for a lift platform according to claim 1, characterized in that: The driving mechanism comprises an oil cylinder (7) hinged on the lifting platform, the oil cylinder (7) extending in the left-right direction, and the movable end of the oil cylinder is hinged to the sliding push rod (4).

4. The locking device for a lift platform according to claim 3, characterized in that: A bottom plate (1) is fixedly connected to the lower end surface of the lifting platform, a guide seat (2) is fixedly connected to the bottom plate (1), and an oil cylinder (7) is hingedly connected to the bottom plate (1).

5. The locking device for a lift platform according to claim 2, characterized in that: A top screw hole is provided on the outer wall of the guide seat, and a top screw (6) extending to the outer wall of the guide sleeve (5) is threadedly connected to the inner thread of the top screw hole.

6. The locking device for a lift platform according to claim 1, characterized in that: A mounting groove is provided on the left end surface of the sliding push rod, and the movable rack is mounted in the mounting groove.

7. The locking device for a lift platform according to claim 2, characterized in that: Two guide sleeves are provided, and a guide sleeve (5) is installed on each of the left and right sections of the guide seat (2).

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