Link type automatic telescopic limit blocking device for car lift and car lift

Abstract

The present invention discloses a link type automatic telescopic limit blocking device for a car lift and a car lift. The blocking device includes a telescopic base, a guide frame, a transmission assembly installed on the guide frame, and a driving assembly for driving the transmission assembly to act so as to drive the telescopic base to move up and down. The transmission assembly includes a base guide pin that is telescopically arranged on a guide seat up and down, a transmission shaft rotatably connected to a lower cross beam, a lower connecting rod and a driving connecting rod fixed on the circumferential surface of the transmission shaft, and an intermediate connecting rod whose two ends are pivotally connected to the base guide pin and the lower connecting rod respectively. The telescopic base is installed on the base guide pin. When the device is pushed out, it can prevent the car from slipping in the car compartment, and when it is retracted, the car can pass freely, reducing the operation difficulty of the car entering and leaving the car compartment; due to the shaft transmission mode, the structure is simpler, more compact, occupies less space at the bottom of the car, and is easy to produce.

Description

Technical Field

[0001] The present invention belongs to the field of elevator equipment, and particularly relates to a link type automatic telescopic limit blocking device for a car elevator and a car elevator. Background Art

[0002] A car elevator is a special freight elevator used to transport non-commercial vehicles, that is, private cars used in our daily life. When the elevator car transports a small car, due to sudden reasons, the small car slides in the car, and at this time, the small car may damage the car door, causing losses to the elevator equipment and the small car itself, and even causing panic among the drivers. At present, for car elevators on the market, in order to cope with this situation, traffic speed bumps are usually installed on the car floor of the car, but in this way, there is a step when the small car enters and exits, increasing the operation difficulty of the small car entering and exiting the car. The existing scissor type automatic telescopic limit blocking device has a relatively complex structure and a slightly greater manufacturing difficulty. Summary of the Invention

[0003] The purpose of the present invention is to provide a link type automatic telescopic limit blocking device for a car elevator, which can prevent the car from sliding in the car and allow the car to pass smoothly and freely when it needs to pass.

[0004] To solve the above technical problems, the present invention adopts the following technical solutions: A link type automatic telescopic limit blocking device for a car elevator, which includes a telescopic base, a guiding frame, a transmission component installed on the guiding frame, and a driving component for driving the transmission component to act and then driving the telescopic base to move up and down.

[0005] The guiding frame includes a guiding base and a lower cross beam fixedly connected.

[0006] The transmission component includes a base guiding pin that can be telescopically arranged on the guiding seat, a transmission shaft rotatably connected to the lower cross beam, a lower connecting rod and a driving connecting rod fixed on the circumferential surface of the transmission shaft, and an intermediate connecting rod whose two ends are respectively pivotally connected to the base guiding pin and the lower connecting rod. The telescopic base is installed on the base guiding pin.

[0007] The driving component includes a telescopic member for driving the driving connecting rod to swing, thereby driving the transmission shaft to rotate, the lower connecting rod and the intermediate connecting rod to swing, and finally realizing the up and down movement of the base guiding pin and the telescopic base.

[0008] Optimally, the driving component includes a push rod vertical seat fixed in a relative position to the lower cross beam. The two ends of the telescopic member are respectively pivotally connected to the push rod vertical seat and the driving connecting rod, and the telescopic member expands and contracts to drive the driving connecting rod to swing.

[0009] Optimized, the guiding frame includes a lower crossbeam connecting seat fixedly connected between the guiding base and the lower crossbeam. The transmission shaft, the lower connecting rod, and the driving connecting rod are located in the cavity formed by the lower crossbeam connecting seat, the guiding base, and the lower crossbeam. The base guiding pin extends from the guiding base and is connected to the telescopic base.

[0010] Optimized, the guiding base includes a bottom plate, a U-shaped plate reversely installed on the bottom plate, and a guiding sleeve fixedly penetrating through the bottom plate and the U-shaped plate. The base guiding pin penetrates through the guiding sleeve.

[0011] Optimized, the transmission assembly includes a transmission shaft seat fixed on the lower crossbeam, and both ends of the transmission shaft are rotatably connected to the transmission shaft seat.

[0012] Optimized, there are several telescopic bases. When there are two telescopic bases, the telescopic bases are divided into two groups and are respectively arranged on both sides of the driving assembly. There are two groups of base guiding pins, intermediate connecting rods, lower connecting rods, guiding sleeves, and U-shaped plates between each telescopic base and the transmission shaft. The telescopic member is connected to the transmission shaft through a driving connecting rod provided at the adjacent ends of the two transmission shafts.

[0013] Optimized, the blocking device includes a lower limit switch hitting plate and an upper limit switch hitting plate fixedly arranged at a relative position to the guiding base, and an upper limit switch and a lower limit switch fixedly arranged at a relative position to the lower crossbeam. The lower limit switch hitting plate is correspondingly arranged with the lower limit switch, and the upper limit switch hitting plate is correspondingly arranged with the upper limit switch.

[0014] Furthermore, the blocking device includes a limit switch seat and a switch hitting plate seat fixedly connected to the guiding base. The upper limit switch and the lower limit switch are installed on the limit switch seat, and the lower limit switch hitting plate and the upper limit switch hitting plate are installed on the switch hitting plate seat.

[0015] Optimized, the base guiding pin is perpendicular to the transmission shaft, and the rotation axes of the transmission shaft, the intermediate connecting rod, the lower connecting rod, and the intermediate connecting rod and the base guiding rod are all parallel to each other.

[0016] The present invention also provides an automobile elevator, which includes a traction mechanism, a car, and a counterweight assembly. The car includes a car bottom and a plurality of car bottom beams. A blocking device is provided on the car bottom. The blocking device is the above-mentioned automobile elevator link type automatic telescopic limit blocking device. The car bottom is provided with an opening for the telescopic base to extend and retract. Two of the car bottom beams are arranged on the lower end surface of the car bottom and are located on both sides of the opening. The space between the two car bottom beams and the opening form the guiding opening of the telescopic base.

[0017] The beneficial effects of the present invention are as follows: When the device is pushed out, it can prevent the car from slipping in the car; when retracted, the car can pass freely, reducing the operation difficulty of the car entering and leaving the car; due to the shaft drive method, the structure is simpler, more compact, occupies less space at the bottom of the car, and is easy to produce. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Three-dimensional schematic diagram of the blocking device;

[0019] Figure 2 Front view schematic diagram of the blocking device;

[0020] Figure 3 Cross-sectional schematic diagram of the connecting rod slider structure;

[0021] Figure 4 Cross-sectional schematic diagram of the drive structure;

[0022] Figure 5 Side view schematic diagram of the blocking device;

[0023] Figure 6 Cross-sectional schematic diagram of the guide base;

[0024] Figure 7 Schematic diagram of the telescopic member;

[0025] 1 - Telescopic base, 2 - Base guide pin, 3 - Guide base, 4 - Lower crossbeam connection seat, 5 - Intermediate connecting rod, 6 - Connecting rod pin, 7 - Lower connecting rod, 8 - Connection seat, 9 - Lower crossbeam, 10 - Push rod cross seat, 11 - Push rod vertical seat, 12 - Push rod rear seat, 13 - Push rod pin, 14 - Telescopic member, 15 - Drive connecting rod, 16 - Transmission shaft, 17 - Transmission shaft seat, 18 - Upper limit switch, 19 - Limit switch seat, 20 - Upper limit switch hitting plate, 21 - Switch hitting plate seat, 22 - Lower limit switch hitting plate, 23 - Lower limit switch, 24 - Car bottom beam, 25 - Car bottom, 26 - Cylindrical pin, 301 - Guide sleeve, 302 - U-shaped plate, 303 - Bottom plate, 141 - Electric push rod cylinder, 142 - Electric push rod moving rod. DETAILED DESCRIPTION OF THE INVENTION

[0026] The present invention will be described in detail below with reference to the embodiments shown in the drawings:

[0027] The car elevator includes a traction mechanism, a car, and a counterweight assembly. The car includes a car bottom and a plurality of car bottom beams provided on the lower end surface of the car bottom. An automatic telescopic limit blocking device with a connecting rod type for the car elevator is provided on the car bottom (the traction mechanism, the car, and the counterweight assembly are not the focus of this application and will not be elaborated here).

[0028] As Figure 1-7As shown in the figure, there are two sets of link-type automatic telescopic limit blocking devices for car elevators, which are respectively located on the front side and the rear side of the parking space in the car. Each link-type automatic telescopic limit blocking device for car elevators includes two telescopic bases, a set of guide frames, two sets of transmission components, and a drive component that drives the transmission components to act and then drives the telescopic bases to move up and down.

[0029] In this embodiment, the guide frame 0 includes a guide base 3, a lower cross beam 9, and a lower cross beam connecting seat 4 fixedly connected between the guide base 3 and the lower cross beam 9. The guide base 3 includes a bottom plate 303, a U-shaped plate 302 reversely installed on the bottom plate 303, and a guide sleeve 301 fixedly penetrating through the bottom plate 303 and the U-shaped plate 302. Each telescopic base 1 is driven by two sets of transmission components to extend and retract. The transmission components include a base guide pin 2, an intermediate link 5, a link pin 6, a lower link 7, a transmission shaft 16, and a drive link 15. The upper ends of two base guide pins 2 are fixedly connected to the telescopic base 1, and the base guide pin 2 is inserted into the guide sleeve 301 to form a sliding pair. The bottom plate 303 is fixed on the car bottom beam 24, the guide sleeve 301 is welded and fixed on the bottom plate 303, and the U-shaped plate 302 is respectively welded and fixed to the guide sleeve 301 and the bottom plate 303 to enhance the connection strength and stiffness between the guide sleeve 301 and the bottom plate 303. At the same time, a secondary limit is formed between the U-shaped plate 302 and the telescopic base 1 to prevent the telescopic base 1 from being pulled down too much below the car bottom plate, forming a sunken groove at the car bottom, causing people to step into the sunken groove and get injured or causing bumps when the car enters and exits freely. One end of the intermediate link 5 is hinged to the lower end of the base guide pin 2 through a link pin 6, and the other end of the intermediate link 5 is hinged to the lower link 7 through a link pin 6. A long lower cross beam 9 is arranged directly below the two telescopic bases 1. The lower cross beam 9 and the guide base 3 are fixed on the car bottom beam 24 together through two lower cross beam connecting seats 4 on each of the left and right sides. The two lower cross beam connecting seats 4 are connected together through two connecting seats 8 to increase the strength and stiffness of the lower cross beam connecting seat 4. Two transmission shafts 16 are coaxially arranged above the lower cross beam 9. Each lower link 7 is sleeved on the transmission shaft 16 through the shaft hole thereon and is fixed to the transmission shaft 16 through a cylindrical pin 26. The two transmission shafts 16 are connected together through a drive link 15, and the transmission shafts 16, the lower links 7, and the drive link 15 rotate synchronously and coaxially. Each transmission shaft 16 is respectively fixed on the lower cross beam 9 through three transmission shaft seats 17, and each transmission shaft seat 17 is respectively arranged close to one side of the lower link 7 and both sides of the drive link 15.

[0030] The driving assembly includes a push rod cross base 10 fixedly connected to and horizontally arranged on the car bottom beam 24, a push rod vertical base 11 fixed on the push rod cross base 10 and vertically arranged, a push rod rear seat 12 fixed on the push rod vertical base 11 and arranged generally towards the direction of the driving link 15, and a telescopic member 14 with both ends hinged between the push rod rear seat 12 and the driving link 15. Specifically, the telescopic member is an electric push rod. The electric push rod cylinder 141 of the telescopic member 14 is hinged to the push rod rear seat 12 through a push rod pin 13, and the electric push rod moving rod 142 of the telescopic member 14 is hinged to the driving link 15 through a push rod pin 13.

[0031] This device further includes a lower limit switch striker plate 22 and an upper limit switch striker plate 20, an upper limit switch 18 and a lower limit switch 23, a switch striker plate seat 21 for mounting the lower limit switch striker plate 22 and the upper limit switch striker plate 20, and a limit switch seat 19 for mounting the upper limit switch 18 and the lower limit switch 23. The switch striker plate seat 21 is fixed on one of the telescopic bases 1. The upper limit switch striker plate 20 is fixed at a position near the lower side on one side of the switch striker plate seat 21, and the lower limit switch striker plate 22 is fixed at a position near the upper side on the other side of the switch striker plate seat 21. The upper limit switch 18 is arranged on the same side as the upper limit switch striker plate 20 and is fixedly connected to the car bottom beam 24 through the limit switch seat 19. The lower limit switch 23 is arranged on the same side as the lower limit switch striker plate 22 and is fixedly connected to the car bottom beam 24 through the limit switch seat 19.

[0032] The working principle of the present invention is as follows:

[0033] The telescopic base 1 is pushed out of the upper end surface of the car bottom 2: the electric push rod moving rod 142 of the telescopic member 14 extends and pushes the driving link 15 to rotate. The driving link 15 drives the lower link 7 to rotate synchronously through the transmission shaft 16. The rotation of the lower link 7 is converted into the upward movement of the base guide pin 2 through the transmission assembly composed of the lower link 7, the intermediate link 5, the guide base 3, and the base guide pin 2. The base guide pin 2 is fixedly connected to the telescopic base 1. While it moves upward, the telescopic base 1 is pushed out of the car bottom 2 floor until the upper limit switch striker plate 20 triggers the upper limit switch 18, and then the telescopic member 14 stops operating. At this time, it can prevent the vehicle from slipping in the car.

[0034] The telescopic base 1 retracts into the car bottom 2: The moving rod 142 of the electric push rod of the telescopic member 14 retracts into the electric push rod cylinder 141 and drives the driving link 15 to rotate reversely. The driving link 15 drives the lower link 7 to rotate reversely synchronously through the transmission shaft 16. The reverse rotation of the lower link 7 is converted into the downward movement of the base guide pin 2 through the transmission assembly composed of the lower link 7, the intermediate link 5, the guide base 3, and the base guide pin 2. The base guide pin 2 is fixedly connected to the telescopic base 1. While the base guide pin 2 moves downward, the telescopic base 1 retracts into the ground of the car bottom 2 until the lower limit switch hitting plate 22 triggers the lower limit switch 23, and then the telescopic member 14 stops operating. At this time, the telescopic base 1 retracts to be flush with the upper end surface of the car bottom 2, and the vehicle can pass freely.

[0035] The above embodiments are only used to illustrate the technical concept and features of the present invention, and the purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. It should not be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. A link-type automatic telescopic limit blocking device for a car elevator, which comprises a telescopic base, a guiding frame, a transmission assembly installed on the guiding frame, and a driving assembly for driving the transmission assembly to act so as to drive the telescopic base to move up and down. It is characterized in that: The guiding frame comprises a guiding base and a lower cross beam which are fixedly connected; The transmission assembly comprises a base guiding pin which is telescopically arranged on the guiding seat up and down, a transmission shaft rotatably connected to the lower cross beam, a lower connecting rod and a driving connecting rod fixed on the circumferential surface of the transmission shaft, and an intermediate connecting rod whose two end parts are pivotally connected to the base guiding pin and the lower connecting rod respectively. The telescopic base is installed on the base guiding pin; The driving assembly comprises a telescopic member for driving the driving connecting rod to swing, thereby driving the transmission shaft to rotate and the lower connecting rod and the intermediate connecting rod to swing, and finally realizing the up and down movement of the base guiding pin and the telescopic base.

2. The link type automatic telescopic limit blocking device for automotive elevators according to claim 1, characterized in that: The driving assembly comprises a push rod vertical seat which is fixed in position relative to the lower cross beam. The two end parts of the telescopic member are pivotally connected to the push rod vertical seat and the driving connecting rod respectively. The telescopic member expands and contracts to drive the driving connecting rod to swing.

3. The link type automatic telescopic limit and blocking device for automotive elevator according to claim 1, characterized in that: The guiding frame comprises a lower cross beam connecting seat fixedly connected between the guiding base and the lower cross beam. The transmission shaft, the lower connecting rod and the driving connecting rod are located in the cavity formed by the lower cross beam connecting seat, the guiding base and the lower cross beam. The base guiding pin extends out of the guiding base and is connected to the telescopic base.

4. The link type automatic telescopic limit blocking device for automotive elevators according to claim 1, characterized in that: The guiding base comprises a bottom plate, a U-shaped plate reversely installed on the bottom plate, and a guiding sleeve fixedly penetrating through the bottom plate and the U-shaped plate. The base guiding pin penetrates through the guiding sleeve.

5. The link type automatic telescopic limit and blocking device for automotive elevators according to claim 1, characterized in that: The transmission assembly comprises a transmission shaft seat fixed on the lower cross beam, and two end parts of the transmission shaft are rotatably connected to the transmission shaft seat.

6. The link type automatic telescopic limit and blocking device for automotive elevators according to claim 1, characterized in that: There are several telescopic bases. When there are two telescopic bases, the telescopic bases are divided into two groups and are respectively arranged on both sides of the driving assembly. There are two groups of base guiding pins, intermediate connecting rods, lower connecting rods, guiding sleeves and U-shaped plates between each telescopic base and the transmission shaft. The telescopic member is connected to the transmission shaft through the driving connecting rod arranged at the adjacent ends of the two transmission shafts.

7. The link type automatic telescopic limit blocking device for automotive elevator according to claim 1, characterized in that: The blocking device comprises a lower limit switch hitting plate and an upper limit switch hitting plate which are fixed in position relative to the guiding base, and an upper limit switch and a lower limit switch which are fixed in position relative to the lower cross beam. The lower limit switch hitting plate is correspondingly arranged with the lower limit switch, and the upper limit switch hitting plate is correspondingly arranged with the upper limit switch.

8. The link type automatic telescopic limit blocking device for automotive elevators according to claim 7, wherein: The blocking device comprises a limit switch seat and a switch hitting plate seat fixedly connected to the guiding base. The upper limit switch and the lower limit switch are installed on the limit switch seat, and the lower limit switch hitting plate and the upper limit switch hitting plate are installed on the switch hitting plate seat.

9. The link type automatic telescopic limit blocking device for automotive elevator according to claim 1, characterized in that: The base guiding pin is perpendicular to the transmission shaft. The self-rotation axis of the transmission shaft, the rotation axes of the intermediate connecting rod and the lower connecting rod, and the rotation axes of the intermediate connecting rod and the base guiding rod are all parallel to each other.

10. An automotive elevator, comprising a traction mechanism, a car, and a counterweight assembly, wherein the car includes a car bottom and a plurality of car bottom beams, and a blocking device is provided on the car bottom, and is characterized in that: The blocking device is the link type automatic telescopic limit blocking device for vehicle lifts described in any one of claims 1-9. An opening for the telescopic base to extend and retract is provided on the car bottom. Two of the car bottom beams are arranged on the lower end surface of the car bottom and on both sides of the opening. The space between the two car bottom beams and the opening form the guiding opening for the telescopic base.

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