CN212799163U

CN212799163U - Electric telescopic car roof protective fence

Info

Publication number: CN212799163U
Application number: CN202021865189.8U
Authority: CN
Inventors: 郑世云; 杨名星; 唐川东; 王成华
Original assignee: Chongqing Macro Lift Co Ltd
Current assignee: Chongqing Macro Lift Co Ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2021-03-26
Anticipated expiration: 2030-08-31

Abstract

The utility model discloses an electric telescopic car roof guard rail, which comprises a fixed guard rail and a movable guard rail; the device also comprises an electric telescopic mechanism; the electric telescopic mechanism comprises a driving motor, a transmission rod and a telescopic component, wherein a motor shaft of the driving motor extends upwards and is connected with the first driving bevel gear; two sides of the driving motor are respectively and horizontally provided with a transmission rod, and one end of each transmission rod, which is close to the driving motor, is respectively provided with a first driven bevel gear; the other ends of the two transmission rods are respectively provided with a second driving bevel gear; the telescopic component comprises a lead screw, a sleeve and a lead screw nut which are vertically arranged, and the lead screw nut is fixedly arranged on the lead screw; a second driven bevel gear is arranged on the sleeve; the upper end of the screw rod is connected with a cross rod of the movable guardrail; the telescopic component and the cross rod can be driven to do telescopic motion in the vertical direction through the driving motor. The utility model discloses can stretch out and draw back fast automatically, it is simple and convenient swift to operate.

Description

Electric telescopic car roof protective fence

Technical Field

The utility model relates to an elevator technical field, concretely relates to electronic telescopic sedan-chair top rail guard.

Background

The car roof guard rail is a protection device arranged on the car roof and used for guaranteeing the life safety of elevator operators when the elevators are overhauled. Due to the height limitation of the top layer, the car top guard rail is usually arranged to be telescopic to meet the corresponding operation space requirement. The common telescopic guard rail is generally formed by sleeving a telescopic rod in a rail of a fixed guard rail, adjusting the telescopic rod to a proper height and fixing the telescopic rod by using bolts. When the telescopic guardrail is used, two persons are needed to cooperate to lift the telescopic guardrail, and when the telescopic guardrail is fixed by using bolts, time and labor are wasted, and the telescopic guardrail is very inconvenient.

SUMMERY OF THE UTILITY MODEL

Not enough to the above that exists to prior art, the utility model discloses a solve current telescopic rail guard and adopt the bolt fastening, waste time and energy, inconvenient problem when mentioning, provide an electronic telescopic sedan-chair top rail guard, under the prerequisite that satisfies the space requirement of elevator operation, can stretch out and draw back fast automatically, it is simple and convenient swift to operate.

In order to solve the technical problem, the utility model discloses a following technical scheme:

an electric telescopic car roof guard rail comprises a fixed guard rail and a movable guard rail; the fixed guardrail and the movable guardrail are both of frame structures, and the same side of the fixed guardrail and the movable guardrail is an open side; the fixed guardrail is fixed on the top of the car and comprises four hollow support columns, two sides of the fixed guardrail adjacent to the open side and one opposite side are respectively provided with a cross beam, and the cross beams are connected with the adjacent support columns; the movable guardrail comprises four upright posts, the four upright posts are correspondingly inserted into the four support posts, two sides of the movable guardrail adjacent to the open side and one opposite side of the movable guardrail are respectively provided with a cross bar, and the cross bars are connected with the adjacent upright posts; the device also comprises an electric telescopic mechanism;

the electric telescopic mechanism comprises a driving motor, a transmission rod and a telescopic component, wherein the driving motor is vertically arranged at the top of the lift car and positioned on the inner side of the fixed guardrail, and a motor shaft of the driving motor extends upwards and is connected with a first driving bevel gear which is horizontally arranged; two sides of the driving motor are respectively and horizontally provided with a transmission rod, the transmission rods extend along the width direction of the elevator car, one ends of the two transmission rods, which are close to the driving motor, are respectively provided with a first driven bevel gear, and the first driven bevel gears are meshed with the first driving bevel gears; the other ends of the two transmission rods are respectively provided with a second driving bevel gear; the telescopic component comprises a lead screw, a sleeve and a lead screw nut which are vertically arranged, and the lead screw nut is fixedly arranged in the sleeve and is positioned at the upper part of the sleeve; a second driven bevel gear is arranged on the sleeve and meshed with the second driving bevel gear; the upper end of the screw rod is connected with a cross rod of the movable guardrail, and the lower end of the screw rod penetrates through the screw rod nut and is connected with the screw rod nut in a threaded fit manner; the telescopic component and the cross rod can be driven to do telescopic motion in the vertical direction through the driving motor.

Through setting up electronic telescopic machanism, electronic telescopic machanism includes driving motor, transfer line and telescopic component, and rotation through control driving motor drives the transfer line and rotates, and the bevel gear through intermeshing turns into linear motion with rotary motion to drive the telescopic component who links to each other with the transfer line at vertical direction concertina movement, realized the electronic flexible of movable guardrail, avoid the manual promotion movable guardrail of maintenance person, it is simple and efficient to operate.

Furthermore, an upper limit contact switch is arranged at the upper end of the screw rod, and a lower limit contact switch is arranged at the lower end of the screw rod; when the lead screw bolt moves up and down, the upper limit contact switch or the lower limit contact switch can be in contact with the lead screw nut and triggered to be closed or disconnected, so that the lead screw nut can be in contact with the upper limit contact switch or the lower limit contact switch in the process of moving up and down, the driving motor is controlled to be closed or disconnected, the movable guardrail stops extending or contracting, and the design is reasonable.

Further, be equipped with horizontal push pedal in the upper end of lead screw, horizontal push pedal and movable guardrail's horizontal pole fixed connection, like this, horizontal push pedal can realize that movable guardrail's horizontal pole and lead screw are connected, and reasonable in design is reliable.

Furthermore, a safety switch is arranged on the cross beam of the fixed guardrail, a safety switch beating plate is arranged on the movable guardrail corresponding to the safety switch, and the safety switch beating plate are arranged in the same safety loop, so that when the safety switch beating plate is separated from the safety switch, the safety loop is disconnected, and the elevator stops running.

Further, the upper end of the support column of the fixed guardrail is provided with a through hole which is penetrated through by the level, the lower end of the upright column of the movable guardrail is correspondingly provided with a through hole, the fixed guardrail and the movable guardrail are fixed together through a limit bolt penetrating through the through hole, and therefore, the stability and the reliability between the fixed guardrail and the movable guardrail are improved.

Compared with the prior art, the utility model has the advantages of as follows:

Drawings

Fig. 1 is the utility model relates to an electric telescopic car top protective guard's schematic diagram.

Fig. 2 is a left side view of fig. 1.

FIG. 3 is a schematic view of embodiment 2 of FIG. 1.

Fig. 4 is a flow chart of the electric telescopic car roof guard of the present invention.

In the figure: the safety switch comprises a fixed guardrail 1, a support column 11, a cross beam 12, a safety switch 13, a limit bolt 14, a movable guardrail 2, a vertical column 21, a cross rod 22, a safety switch beating plate 23, an electric telescopic mechanism 3, a driving motor 31, a transmission rod 32, a telescopic member 33 and a horizontal pushing plate 331.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

Example (b):

referring to fig. 1, an electric telescopic car roof guard rail comprises a fixed guard rail 1 and a movable guard rail 2. The fixed guardrail 1 and the movable guardrail 2 are both frame structures, and the same side of the fixed guardrail 1 and the movable guardrail 2 is an open side. Wherein, fixed guardrail 1 is fixed at the car top, including four hollow support columns 11. Two sides of the fixed guardrail 1 adjacent to the open side and one opposite side are respectively provided with a cross beam 12, and the cross beams 12 are connected with the adjacent supporting columns 11. The movable guardrail 2 comprises four upright posts 21, and the four upright posts 21 are correspondingly inserted into the four support columns 11. Two sides of the movable guardrail 2 adjacent to the open side and the opposite side are respectively provided with a cross bar 22, and the cross bars 22 are connected with the adjacent upright posts 21. And also comprises an electric telescopic mechanism 3. The electric telescopic mechanism 3 comprises a driving motor 31, a transmission rod 32 and a telescopic member 33, wherein the driving motor 31 is vertically installed at the top of the car and is positioned on the inner side of the fixed guardrail 1, and a motor shaft of the driving motor extends upwards and is connected with a first driving bevel gear horizontally arranged. Two sides of the driving motor 31 are respectively horizontally provided with a driving rod 32, the driving rods 32 extend along the width direction of the elevator car, and one ends of the two driving rods 32 close to the driving motor 31 are respectively provided with a first driven bevel gear which is meshed with the first driving bevel gear. Wherein the width direction of the elevator is a direction parallel to the car door. The other ends of the two transmission rods 32 are respectively provided with a second driving bevel gear. The telescopic member 33 comprises a vertically arranged screw rod, a sleeve and a screw rod nut, and the screw rod nut is fixedly arranged in the sleeve and is positioned at the upper part of the sleeve. And a second driven bevel gear is arranged on the sleeve and meshed with the second driving bevel gear. The upper end of the screw rod is connected with the cross rod 22 of the movable guardrail 2, and the lower end of the screw rod penetrates through the screw rod nut and is connected with the screw rod nut in a threaded fit manner. The driving motor 31 can drive the telescopic member 33 and the cross bar 22 to move in a telescopic manner in the vertical direction. When the device is implemented specifically, the end parts of the two sleeves extend out of the mounting hole of the second driven bevel gear and are fixed on the top of the car through a support. The two transmission rods 32 are also fixed to the top of the car by brackets (not shown in the figures, which are prior art brackets) which allow the transmission rods 32 and the sleeves to operate stably and reliably.

When the screw bolt moves up and down, the upper limit contact switch or the lower limit contact switch can be in contact with the screw nut and triggered to be closed or disconnected. During specific implementation, the upper limit contact switch, the lower limit contact switch and the contact switch on the screw nut are all connected into a control system of the elevator, when the contact switch on the screw nut is in contact with the upper limit contact switch or the lower limit contact switch, a signal can be sent to the elevator control system, the elevator control system controls the driving motor 31 to stop running, and therefore the movable guardrail 2 stops extending or contracting, and the design is reasonable. The upper end of the screw rod is provided with a horizontal push plate 331, the horizontal push plate 331 is fixedly connected with the cross rod 22 of the movable guardrail 2, and thus, the horizontal push plate 331 can realize the connection of the cross rod 22 of the movable guardrail 2 and the screw rod.

In the implementation process, a safety switch 13 is further arranged on the cross beam 12 of the fixed guardrail 1, a safety switch beating plate 23 is arranged on the movable guardrail 2 corresponding to the safety switch 13, and the safety switch 13 and the safety switch beating plate 23 are arranged in the same safety loop, so that when the safety switch beating plate 23 is separated from the safety switch 13, the safety loop is disconnected, and the elevator stops running. The through-hole that the level runs through is equipped with in the upper end of the support column 11 of fixed guardrail 1, also corresponds at the lower extreme of the stand 21 of movable guardrail 2 and is equipped with the through-hole, fixed guardrail 1 and movable guardrail 2 are together fixed through the spacing bolt 14 that runs through the through-hole, like this, increase stability and reliability between fixed guardrail 1 and the movable guardrail 2.

Example 2

Referring to fig. 3, the difference from embodiment 1 is that two sleeves pass through the mounting hole of the second driven bevel gear and extend to the top of the car, and the two sleeves are rotatably connected with the top of the car.

When the maintenance switch is used, referring to fig. 4, the maintenance switch is arranged on the car roof, the maintenance switch and the driving motor 31 of the electric telescopic mechanism 3 are located in the same loop, and the operation of the driving motor 31 can be switched on and off through the maintenance switch. When an elevator maintainer goes up the car top, an emergency stop button of an elevator car is pressed, the maintenance switch is pushed to the maintenance state, the driving motor 31 rotates in the forward direction to drive the transmission rod 32 and the lead screw to rotate, the lead screw and the lead screw nut move upwards in the sleeve, the movable guardrail 2 begins to extend, the switch beating plate arranged on the movable guardrail 2 can be separated from the safety switch 13 arranged on the cross beam 12 of the fixed guardrail 1, the safety loop is disconnected, and the elevator can not run normally at the moment. When the screw rod nut moves to the upper limit position, the contact switch on the screw rod nut and the upper limit contact switch act, the driving motor 31 stops running, and the movable guardrail 2 stops extending. After the maintainer goes up the sedan-chair top, insert spacing bolt 14 in the through-hole between the stand 21 of movable guardrail 2 and the support column 11 of fixed guardrail 1 and carry out spacingly, avoid movable guardrail 2 malfunction.

When the elevator maintainer leaves the car top, at first take off mechanical spacing bolt 14, reset the maintenance switch to normal condition simultaneously, driving motor 31 antiport this moment, lead screw and screw-nut downstream, movable guardrail 2 contracts downwards. When the guardrail retracts to a certain position, the safety switch 13 is actuated, and the safety loop is closed. When the screw rod nut moves to the lower limit position, the contact switch on the screw rod nut and the lower limit contact switch act, the driving motor 31 stops running, and the movable guardrail 2 stops contracting. At this time, the elevator returns to a normal running state.

Due to the fact that the electric telescopic mechanism, the transmission rod and the telescopic component are arranged, the transmission rod can be driven to rotate by controlling the rotation of the driving motor, the rotary motion is converted into the linear motion through the mutually meshed bevel gears, the telescopic component connected with the transmission rod is driven to do telescopic motion in the vertical direction, electric telescopic of the movable guardrail is achieved, maintenance personnel are prevented from manually lifting the movable guardrail, and the operation is simple, convenient and fast.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the technical solutions, and those skilled in the art should understand that those modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all should be covered in the scope of the claims of the present invention.

Claims

1. An electric telescopic car roof guard rail comprises a fixed guard rail and a movable guard rail; the fixed guardrail and the movable guardrail are both of frame structures, and the same side of the fixed guardrail and the movable guardrail is an open side; the fixed guardrail is fixed on the top of the car and comprises four hollow support columns, two sides of the fixed guardrail adjacent to the open side and one opposite side are respectively provided with a cross beam, and the cross beams are connected with the adjacent support columns; the movable guardrail comprises four upright posts, the four upright posts are correspondingly inserted into the four support posts, two sides of the movable guardrail adjacent to the open side and one opposite side of the movable guardrail are respectively provided with a cross bar, and the cross bars are connected with the adjacent upright posts; it is characterized by also comprising an electric telescopic mechanism;

2. The electric telescopic car roof guard rail of claim 1, wherein an upper limit contact switch is arranged at the upper end of the screw rod, and a lower limit contact switch is arranged at the lower end of the screw rod; when the screw bolt moves up and down, the upper limit contact switch or the lower limit contact switch can be in contact with the screw nut and triggered to be closed or opened.

3. The electric telescopic car roof protective fence according to claim 1, wherein a horizontal push plate is arranged at the upper end of the screw rod, and the horizontal push plate is fixedly connected with a cross rod of the movable guardrail.

4. The electric telescopic car roof guard fence according to claim 1, wherein a safety switch is provided on the cross beam of the fixed guard, and a safety switch striking plate is provided on the movable guard at a position corresponding to the safety switch.

5. The electric telescopic car roof protective guard according to claim 1, wherein a through hole is horizontally formed at the upper end of a support column of the fixed guardrail, a through hole is correspondingly formed at the lower end of an upright column of the movable guardrail, and the fixed guardrail and the movable guardrail are fixed together through a limiting bolt penetrating through the through hole.