Pedal type maintenance protection device for elevator pit

Abstract

The invention discloses an elevator pit pedal type maintenance protection device which comprises a pedal device and a supporting device, the pedal device is connected with the supporting device through a trigger device, the pedal device can enable the supporting device to act through the trigger device by stepping on the pedal device, and the supporting device can support an elevator car to provide a maintenance space; according to the elevator supporting device, the supporting device and the pedal device are installed in the elevator pit, after a maintainer enters the pit, the maintainer can conveniently step on the pedal device to enable the supporting rod of the supporting device to be erected through the trigger device, the supporting rod is limited and fixed through the spring pin and the limiting hole, and stable supporting of the supporting device is guaranteed. After maintenance is completed, the supporting rod can be reset in a manual pressing mode, the pedal device can be installed at the proper position in the bottom pit according to needs, it is guaranteed that a maintainer can tread the pedal device when entering the bottom pit, use is convenient, and the protection effect on the maintainer is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of elevator equipment, and particularly relates to a foot-operated maintenance protection device for an elevator pit. Background Art

[0002] At present, most home villa elevator pits are not designed with maintenance devices. The existing pit maintenance devices are only simple mechanical pit maintenance devices, which require maintenance personnel to manually support them for protection every time they enter the pit. The operation is inconvenient. Therefore, most maintenance personnel will not manually lift the pit maintenance device after entering the pit. After the pit maintenance device is installed, it basically becomes a decoration, and its protection effect is limited, posing a threat to the safety of maintenance personnel. Summary of the Invention

[0003] Aiming at the deficiencies of the above-mentioned prior art, the technical problem to be solved by the present invention is: to provide a foot-operated maintenance protection device for an elevator pit, which solves the problems of inconvenient operation and poor protection effect in the prior art.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: A foot-operated maintenance protection device for an elevator pit includes a foot-operated device and a support device. The foot-operated device is connected to the support device through a trigger device. When the foot-operated device is stepped on, the foot-operated device can make the support device act through the trigger device, so that the support device can support the elevator car to provide a maintenance space; wherein, The support device includes a base, a support rod and a pulling spring. One end of the support rod is rotatably installed on the base through a rotating shaft, so that it can rotate between a horizontal state and a vertical state; one end of the pulling spring is connected to the base through a first spring seat, and the other end is connected to the middle of the support rod through a second spring seat. The first spring seat is higher than the rotating shaft in the vertical direction, and when the support rod is in the horizontal state, the first spring seat and the second spring seat are respectively located on both sides of the rotating shaft, so that during the rotation of the support rod, the included angle between the axis of the pulling spring and the axis of the support rod is always greater than zero; A first limit hole and a second limit hole are provided on the base. Correspondingly, a spring pin is installed on the support rod. When the support rod is in the horizontal state, the spring pin can extend into the first limit hole. When the support rod is in the vertical state, the spring pin can extend into the second limit hole; the foot-operated device includes a bottom plate and a foot pedal rotatably installed on the bottom plate. The trigger device includes a wire. One end of the wire is connected to the foot pedal, and the other end is connected to the spring pin. When the foot pedal rotates, it can pull the wire, and then pull the spring pin out of the first limit hole or the second limit hole.

[0005] As an optimization, the base is U-shaped, comprising a horizontal plate, a first side plate and a second side plate, and both ends of the rotating shaft are rotatably mounted on the first side plate and the second side plate respectively; the first limit hole and the second limit hole are opened on the first side plate.

[0006] As an optimization, the support rod is connected to the rotating shaft through an L-shaped plate, and the L-shaped plate includes a first support plate and a second support plate. The first support plate is fixedly connected to the rotating shaft and the end of the support rod, and the first support plate is perpendicular to the support rod. When the support rod is rotated to a horizontal state, the first support plate is perpendicular to the horizontal plate. When the support plate is rotated to a horizontal state, the first support plate is parallel to the horizontal plate, and under the action of a pulling spring, it fits with the horizontal plate to form a locking structure to prevent the support rod from continuing to rotate.

[0007] As an optimization, two relatively arranged support plates are installed on the other support plate of the L-shaped plate, and corresponding sliding holes are opened on the support plates. The spring pin includes a pin shaft and a reset spring sleeved on the pin shaft. One end of the pin shaft passes through the sliding hole and cooperates with the first limiting hole or the second limiting hole, and the other end is connected to the pull wire; a fixed plate is provided on the shaft body of the pin shaft located between the two support plates, one end of the reset spring is against the fixed plate, and the other end is against the support plate.

[0008] As an optimization, there are two pull-up springs, which are respectively connected to the first side plate and the second side plate.

[0009] As an optimization, a clearance groove is opened on the second side plate, and when the support rod is rotated from a horizontal state to a vertical state, the pull wire can move along the clearance groove.

[0010] As an optimization, a contact switch is installed on the horizontal plate, and the contact switch is connected in series in the elevator operating circuit. When the support rod is in a horizontal state, the support rod can press the contact switch to connect the elevator operating circuit. When the support rod is in a non-horizontal state, the contact switch disconnects the elevator operating circuit.

[0011] As an optimization, a support seat is provided on the horizontal plate, and a damping rod is provided on the support seat, one end of the damping rod is connected to the support seat, and the other end is connected to the middle part of the support rod.

[0012] As an optimization, a support spring is provided between the foot pedal and the base plate, and a connecting plate is provided at the free end of the foot pedal. A support is provided on the base plate, and a guide groove is provided on the support. The pull wire passes through the guide groove and is connected to the connecting plate.

[0013] Compared with the prior art, this application has the following beneficial effects: In the present invention, by installing a support device and a footrest device in the elevator pit, after the maintenance personnel enter the pit, they can conveniently step on the footrest device, which can make the support rod of the support device stand up through the triggering device, and limit and fix it through the spring pin and the limit hole to ensure its stable support. After the maintenance is completed, the support rod can be reset by manual pressing. The footrest device can be installed at a suitable position in the pit according to needs, ensuring that the maintenance personnel can step on the footrest device as soon as they enter the pit, which is convenient to use and improves the protection effect on the maintenance personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the present invention (the support rod is in a horizontal state); Figure 2 is a schematic structural diagram of the footrest device in the present invention; Figure 3 is a schematic structural diagram of the present invention (the support rod is in a vertical state); Figure 4 is a schematic structural diagram of the support device in the present invention; In the figure, 1 is the base, 2 is the support rod, 3 is the pulling spring, 4 is the rotating shaft, 5 is the first limit hole, 6 is the spring pin, 7 is the bottom plate, 8 is the footrest, 9 is the wire, 10 is the L-shaped plate, 11 is the relief groove, 12 is the contact switch, 13 is the support seat, 14 is the damping rod, 15 is the support spring, 16 is the support. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The present invention will be further described in detail below with reference to the accompanying drawings.

[0016] During specific implementation: Refer to Figures 1 - 4 , A foot-operated maintenance protection device for an elevator pit, comprising a footrest device and a support device. The footrest device is connected to the support device through a triggering device. By stepping on the footrest device, the footrest device can make the support device act through the triggering device, so that the support device can support the elevator car to provide a maintenance space; wherein, The support device includes a base 1, a support rod 2 and a pulling spring 3. The base 1 is U-shaped and includes a horizontal plate, a first side plate and a second side plate. Both ends of the rotating shaft 4 are rotatably installed on the first side plate and the second side plate respectively; the first limit hole 5 and the second limit hole are provided on the first side plate.

[0017] One end of the support rod 2 is rotatably installed on the base 1 through the rotating shaft 4, so that it can rotate between a horizontal state and a vertical state.

[0018] One end of the pulling spring 3 is connected to the base 1 through a first spring seat, and the other end is connected to the middle of the support rod 2 through a second spring seat. The first spring seat is higher than the rotating shaft 4 in the vertical direction. When the support rod 2 is in the horizontal state, the first spring seat and the second spring seat are respectively located on both sides of the rotating shaft 4, so that during the rotation of the support rod 2, the included angle between the axis of the pulling spring 3 and the axis of the support rod 2 is always greater than zero. Specifically, there are two pulling springs 3, which are respectively connected to the first side plate and the second side plate.

[0019] A first limiting hole 5 and a second limiting hole are provided on the base 1. Correspondingly, a spring pin 6 is installed on the support rod 2. When the support rod 2 is in the horizontal state, the spring pin 6 can extend into the first limiting hole 5. When the support rod 2 is in the vertical state, the spring pin 6 can extend into the second limiting hole. The foot pedal device includes a bottom plate 7 and a foot pedal 8 rotatably installed on the bottom plate 7. The triggering device includes a pull wire 9. One end of the pull wire 9 is connected to the foot pedal 8, and the other end is connected to the spring pin 6. When the foot pedal 8 rotates, it can pull the pull wire 9, and then pull the spring pin 6 out of the first limiting hole 5 or the second limiting hole.

[0020] In the present invention, by installing a support device and a foot pedal device in the elevator pit, after the maintenance personnel enter the pit, they can conveniently step on the foot pedal device, so that through the triggering device, the support rod 2 of the support device can be erected, and it is limited and fixed by the spring pin 6 and the limiting hole to ensure its stable support. After the maintenance is completed, the support rod 2 can be reset by manual pressing. The foot pedal device can be installed at a suitable position in the pit according to needs, ensuring that the maintenance personnel can step on the foot pedal device when entering the pit, which is convenient to use and improves the protection effect on the maintenance personnel.

[0021] In order to ensure that the rotation angle range of the support rod 2 is 90°, in this embodiment, the support rod 2 is connected to the rotating shaft 4 through an L-shaped plate 10. The L-shaped plate 10 includes a first support plate and a second support plate. The first support plate is fixedly connected to the rotating shaft 4 and the end of the support rod 2, and the first support plate is perpendicular to the support rod 2. When the support rod 2 rotates to the horizontal state, the first support plate is perpendicular to the horizontal plate. When the support plate rotates to the horizontal state, the first support plate is parallel to the horizontal plate and fits with the horizontal plate under the action of the pulling spring 3 to form a locking structure to prevent the support rod 2 from continuing to rotate.

[0022] Two oppositely arranged support plates are installed on the second support plate of the L-shaped plate 10, and sliding holes are correspondingly opened on the support plates. The spring pin 6 includes a pin shaft and a return spring sleeved on the pin shaft. One end of the pin shaft passes through the sliding hole and is matched with the first limiting hole 5 or the second limiting hole, and the other end is connected to the pull wire 9. A fixing plate is provided on the shaft body of the pin shaft between the two support plates. One end of the return spring abuts against the fixing plate, and the other end abuts against the support plate.

[0023] In order to ensure that the stay wire 9 can follow the rotation of the support rod 2 to protect the stay wire 9, a relief groove 11 is provided on the second side plate. During the process of the support rod 2 rotating from the horizontal state to the vertical state, the stay wire 9 can move along the relief groove 11.

[0024] A contact switch 12 is installed on the horizontal plate. The contact switch 12 is connected in series to the elevator operation circuit. When the support rod 2 is in the horizontal state, the support rod 2 can press the contact switch 12 to turn on the elevator operation circuit. When the support rod 2 is in a non-horizontal state, the contact switch 12 disconnects the elevator operation circuit, further improving the protection effect through the electrical means.

[0025] A support seat 13 is provided on one side of the horizontal plate close to the first spring seat. A damping rod 14 is provided on the support seat 13. One end of the damping rod 14 is connected to the support seat 13, and the other end is connected to the middle of the support rod 2 to provide damping for the rotation of the support rod 2 and prevent it from rotating suddenly.

[0026] A support spring 15 is provided between the foot pedal 8 and the bottom plate 7. A connecting plate is provided at the free end of the foot pedal 8. A support 16 is provided on the bottom plate 7. A guide groove is provided on the support 16. The stay wire 9 passes through the guide groove and is connected to the connecting plate. In this way, the rotation of the foot pedal 8 can more easily pull the stay wire 9 and extend the service life.

[0027] During specific use, first fix the support device and the foot pedal device to the appropriate ground in the pit using expansion bolts to ensure that the support rod can support the car after being supported, ensuring the stability of the car without tilting. Then fix the foot pedal device at the entrance of the landing door into the pit to ensure that the first foot can step on the foot pedal after entering the pit. Connect the stay wire to the connecting plate and the support seat on the foot pedal, close the support rod, and insert the spring pin into the first limit hole.

[0028] After the maintenance personnel enter the pit, they step on the foot pedal. The foot pedal moves downward and closes, driving the cable. The cable is fixed to the connecting plate on the foot pedal. When the foot pedal moves downward, it pulls the cable. The cable pulls the spring pin, and the pin is pulled out from the first limit hole. The return spring is compressed, and the lifting spring is always in a stretched state. After the spring pin is pulled out, the lifting spring pulls the support rod upward. The support rod rotates through the rotating shaft. At the same time, a damping rod is designed on the upper part of the support rod. During the process of the lifting spring pulling the support rod backward, the damping rod maintains damping, so that the support rod is slowly pulled up by the lifting spring, avoiding the sudden bounce of the support rod after the spring pin is pulled out and preventing accidents. The support rod rotates 90 degrees, from horizontal to vertical. An L-shaped plate is arranged at the lower part of the support rod. When the L-shaped plate rotates 90 degrees, it is exactly parallel to the horizontal plate of the base and fits with the horizontal plate under the action of the lifting spring. At the same time, the support rod just vertically supports. At the same time, due to the restoring force of the return spring, when the foot pedal is released, the spring pin is reset and inserted into the second limit hole through the return spring to prevent the support rod from falling down and play a stabilizing role. When the car slides down, the support rod can always maintain vertical support for the car, protecting the safety of the pit personnel. The support rod is fixed by the spring pin and will not tilt and fall due to the extrusion of the car or manual push.

[0029] After the maintenance and repair personnel finish the inspection, they manually pull out the spring pin and manually rotate the support rod to reset. The lifting spring is stretched. After reaching the position, the spring pin is inserted into the first limit hole to fix the support rod in a horizontal state. At the same time, there is a contact switch at the lower part of the support rod. When the support rod reaches the horizontal position, the contact switch is pressed. After the contact switch is pressed, it is powered on. The contact switch is connected to the elevator safety circuit. Only when the contact switch is powered on can the elevator operate normally. When the support rod vertically supports, the switch is not pressed and contacted, and the elevator safety circuit is always in an open state. The elevator can never operate, which also provides double safety protection in terms of electrical means.

[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and bases of the present invention. The scope of the present invention is defined by the appended claims and their equivalents. Therefore, the embodiments of the present invention are only illustrative examples of the present invention, and in no way constitute a limitation to the present invention from any point of view.

Claims

1. An elevator pit foot-operated maintenance and protection device, characterized in that: It includes a pedal device and a support device, wherein the pedal device is connected to the support device through a trigger device, and when the pedal device is stepped on, the pedal device can activate the support device through the trigger device, so that the support device can support the elevator car to provide maintenance space; wherein, The support device comprises a base, a support rod and a pull-up spring, one end of the support rod is rotatably mounted on the base via a rotating shaft so that it can rotate between a horizontal state and a vertical state; one end of the pull-up spring is connected to the base via a first spring seat, and the other end is connected to the middle part of the support rod via a second spring seat, the first spring seat is higher than the rotating shaft in the vertical direction, and when the support rod is in a horizontal state, the first spring seat and the second spring seat are respectively located on both sides of the rotating shaft, so that during the rotation of the support rod, the angle between the axis of the pull-up spring and the axis of the support rod is always greater than zero; A first limiting hole and a second limiting hole are provided on the base, and correspondingly, a spring pin is installed on the support rod. When the support rod is in a horizontal state, the spring pin can extend into the first limiting hole, and when the support rod is in a vertical state, the spring pin can extend into the second limiting hole; the foot pedal device includes a base plate and a foot pedal rotatably mounted on the base plate, and the trigger device includes a pull wire, one end of the pull wire is connected to the foot pedal, and the other end is connected to the spring pin. When the foot pedal rotates, the pull wire can be pulled, thereby pulling the spring pin out of the first limiting hole or the second limiting hole.

2. The elevator pit foot-operated maintenance and protection device according to claim 1 is characterized in that: The base is U-shaped and includes a horizontal plate, a first side plate and a second side plate. Both ends of the rotating shaft are rotatably mounted on the first side plate and the second side plate respectively. The first limiting hole and the second limiting hole are opened on the first side plate.

3. The elevator pit foot-operated maintenance and protection device according to claim 2 is characterized in that: The support rod is connected to the rotating shaft through an L-shaped plate, and the L-shaped plate includes a first support plate and a second support plate. The first support plate is fixedly connected to the rotating shaft and the end of the support rod, and the first support plate is perpendicular to the support rod. When the support rod is rotated to a horizontal state, the first support plate is perpendicular to the horizontal plate. When the support plate is rotated to a horizontal state, the first support plate is parallel to the horizontal plate, and is fitted with the horizontal plate under the action of a pulling spring to form a locking structure to prevent the support rod from continuing to rotate.

4. The elevator pit foot-operated maintenance and protection device according to claim 3 is characterized in that: Two relatively arranged support plates are installed on the other support plate of the L-shaped plate, and corresponding sliding holes are opened on the support plates. The spring pin includes a pin shaft and a reset spring sleeved on the pin shaft. One end of the pin shaft passes through the sliding hole and cooperates with the first limiting hole or the second limiting hole, and the other end is connected with the pull wire. A fixed plate is provided on the shaft body of the pin shaft located between the two support plates, one end of the reset spring is against the fixed plate, and the other end is against the support plate.

5. The elevator pit foot-operated maintenance and protection device according to claim 2 is characterized in that: There are two pull-up springs, which are respectively connected to the first side plate and the second side plate.

6. The elevator pit foot-operated maintenance and protection device according to claim 2 is characterized in that: A clearance groove is provided on the second side plate, and when the support rod is rotated from a horizontal state to a vertical state, the pull wire can move along the clearance groove.

7. The elevator pit foot-operated maintenance and protection device according to claim 2 is characterized in that: A contact switch is installed on the horizontal plate and is connected in series in the elevator operation circuit. When the support rod is in a horizontal state, the support rod can press the contact switch to connect the elevator operation circuit. When the support rod is in a non-horizontal state, the contact switch disconnects the elevator operation circuit.

8. The elevator pit foot-operated maintenance and protection device according to claim 2 is characterized in that: A support seat is arranged on one side of the horizontal plate close to the first spring seat, and a damping rod is arranged on the support seat, one end of the damping rod is connected to the support seat, and the other end is connected to the middle part of the support rod.

9. The elevator pit foot-operated maintenance and protection device according to claim 1, characterized in that: A supporting spring is arranged between the foot pedal and the bottom plate, a connecting plate is arranged at the free end of the foot pedal, a support is arranged on the bottom plate, a guide groove is arranged on the support, and the pull wire passes through the guide groove and is connected to the connecting plate.

Images