CN216235832U - Anti-falling freight elevator - Google Patents

Abstract

The utility model provides a falling-prevention freight elevator which comprises a base platform, a support, a toothed plate, a top block, a spring and an electromagnet, wherein the base platform comprises a frame and a roller, and the roller is arranged on the frame; the bracket comprises two upright posts which are arranged in parallel, a first guide rail is arranged on the first side surface of each upright post, and one side of the frame is connected to the first guide rail in a sliding way through a sliding block; the top of the upright post is provided with a driving mechanism for driving the base station to move up and down; the toothed plate is arranged between the two upright posts and is parallel to the upright posts; the toothed plate is provided with a row of teeth, and the teeth comprise inclined planes and steps; the jacking block is matched with the teeth, can ascend along the inclined planes of the teeth and the steps and can be clamped on the steps; the frame is provided with a through hole, the spring is installed in the through hole, the electromagnet is located at one end of the spring, and the ejector block is located at the other end of the spring. The roller is added in the scheme, so that the resistance to moving the goods is greatly reduced, and the goods can be loaded and unloaded conveniently; the base station can be prevented from falling through the toothed plate, the ejector block, the spring and the electromagnet.

Description

A fall-proof freight elevator

technical field

The utility model relates to the technical field of elevators, in particular to an anti-fall freight elevator.

Background technique

The structure of freight elevators is similar to that of passenger elevators that transport passengers, but the safety level of freight elevators is lower than that of passenger elevators. As long as freight elevators can move up and down safely with goods, freight elevators generally can only transport goods. , cannot transport passengers.

A freight elevator generally includes a car and a winch that pulls the car up and down. The car is a box in the shape of a rectangular parallelepiped. One side of the box is provided with a cabinet door. When cargo needs to be loaded, the cabinet door is opened, and then the cargo is pushed into the box from the cabinet door. However, when loading goods, the size of the opening of the cabinet door is limited, and although some goods can be accommodated in the box, they cannot be transported into the box.

The winch is wound with a cable, and the car is pulled by the cable. If the cable breaks during use, the car will fall. In order to avoid this kind of accident, the previous solution is mainly to continuously strengthen the strength of the cable and the reliability of the connection between the cable and the car. But even so, there may be problems, so it is necessary to improve.

Utility model content

The utility model provides an anti-fall freight elevator to solve the technical problems that the existing freight elevator is inconvenient to load goods and the car may fall.

In order to solve the above technical problems, the utility model provides an anti-fall freight elevator, including a base, a bracket, a toothed plate, a top block, a spring and an electromagnet, the base includes a frame and a roller, and the roller is installed on the on the frame; the upper surface of the roller is higher than the upper surface of the frame, or the upper surface of the roller and the upper surface of the frame are on the same plane;

The bracket comprises two parallel columns, a first guide rail is installed on the first side of each column, and one side of the frame is slidably connected to the first guide rail through a slider;

The top of the column is provided with a driving mechanism for driving the base to move up and down on the first guide rail;

The toothed plate is installed between two of the uprights, and the toothed plate is parallel to the upright column; a row of teeth is arranged on the toothed plate, and the tooth includes an inclined surface and a step; the upper end of the inclined surface is parallel to the The distance between the top blocks is smaller than the distance between the lower end of the inclined plane and the top block; the height of one end of the step close to the top block is greater than the height of the other end;

The top block is matched with the teeth, the top block can rise along the inclined surface and the steps of the teeth, and can be clamped on the steps; the top block is installed on the frame by a pin, so The top block is made of ferromagnetic material;

The frame is provided with a through hole, the spring is installed in the through hole, the electromagnet is located at one end of the spring, and the top block is located at the other end of the spring.

Optionally, a speed sensor or an acceleration sensor is installed on the frame, the freight elevator further includes a controller, the speed sensor or the acceleration sensor is electrically connected with the controller, and the controller is connected with the electromagnetic Ferroelectric connection, the controller is used to control the de-energization and energization of the electromagnet.

Optionally, the rollers include a plurality of longitudinal rollers and a transverse roller; the plurality of the longitudinal rollers are arranged in parallel and spaced apart; the connecting line between the two vertical columns is parallel to the extending direction of the transverse rollers, so The transverse rollers are perpendicular to and spaced apart from the longitudinal rollers, and the transverse rollers are located on a side of the longitudinal rollers away from the vertical column.

Optionally, the upper surfaces of the plurality of longitudinal rollers and the upper surfaces of the transverse rollers are higher than the upper surface of the frame.

Optionally, the bracket includes a beam, and the beam is connected between the tops of the two uprights; the driving mechanism includes a motor, and the motor is installed on the beam; the motor drives the chain through a reducer When the wheel rotates, a chain is arranged on the sprocket; one end of the chain is connected with the top block, and the other end is connected with the counterweight block.

Optionally, the four corners of the counterweight block are provided with pulleys, and the pulleys are provided with grooves; a second guide rail is provided on the second side of each of the uprights, and the counterweight blocks are located in two between the second side surfaces of the uprights; the pulley is clamped on the second guide rail through the groove, and the counterweight block slides up and down relative to the second guide rail through the pulley.

Optionally, the weight of the counterweight is equal to the weight of the base.

Optionally, the base also includes two stabilizer bars, and extension bars are provided at the bottoms of both ends of the side of the frame close to the upright column; the two stabilizer bars are arranged in parallel and spaced apart; the stabilizer bars One end of the stabilizer bar is connected to the bottom of the frame, and the other end of the stabilizer bar is connected to the bottom of the extension bar.

Optionally, one end of the stabilizer bar is connected to the center of the bottom of the frame.

Optionally, the support further includes two bottom rods, two diagonal strut rods and a plurality of connecting rods; the bottom of each of the uprights is vertically connected with one of the bottom rods; the two bottom rods are parallel and spaced apart One end of the diagonal strut is connected with the upright column, and the other end is connected with the bottom rod; the two diagonal braces are arranged in parallel and spaced apart; the connecting rod is connected between the two uprights, A plurality of the connecting rods are arranged in parallel and spaced apart.

The utility model provides an anti-fall freight elevator, which greatly reduces the resistance of moving goods due to the addition of rollers, which is convenient for loading and unloading goods; No longer limited by the width of the cabinet door; the abutment is prevented from falling by means of the tooth plate, top block, spring and electromagnet.

Description of drawings

FIG. 1 is a schematic three-dimensional structural diagram of a fall-proof freight elevator provided by an embodiment of the present invention.

FIG. 2 is a left side view of FIG. 1 .

FIG. 3 is a partial enlarged view of the bottom of FIG. 2 .

FIG. 4 is a cross-sectional view of FIG. 2 .

FIG. 5 is a partial enlarged view inside the circle in FIG. 4 .

[reference numerals are explained below]:

Base-1, bracket-2, drive mechanism-3, buffer-4, upper limit switch-5, lower limit switch-6, tooth plate-7, top block-8, spring-9, electromagnet- 10;

Frame-11, longitudinal roller-12, transverse roller-13, stabilizer bar-14, extension bar-15, bottom bar-16, diagonal strut-17, connecting bar-18;

Column-20, first guide rail-21, beam-22;

Motor-31, reducer-32, sprocket-33, chain-34.

Tooth-71, Bevel-711, Step-712; Pin-81; Through-hole-111.

Detailed ways

In order to make the purpose, advantages and features of the present utility model clearer, a fall-proof freight elevator proposed by the present utility model will be further described in detail below with reference to the accompanying drawings. It should be noted that, the accompanying drawings are all in a very simplified form and in inaccurate scales, and are only used to facilitate and clearly assist the purpose of explaining the embodiments of the present invention.

In the description of the present invention, the terms "first", "second" and other qualifiers are added for the convenience of description and reference, and should not be understood as indicating or implying relative importance or implicitly indicating the indicated technical features quantity. Thus, a feature defined with a qualifier "first", "second", etc., may expressly or implicitly include one or more of that feature.

As shown in FIG. 1 , FIG. 4 and FIG. 5 , this embodiment provides an anti-fall freight elevator, including a base 1 , a bracket 2 , a toothed plate 7 , a top block 8 , a spring 9 and an electromagnet 10 . The base 1 includes a frame 11 and a roller, and the roller is mounted on the frame 11 ; the upper surface of the roller is higher than the upper surface of the frame 11 , or the upper surface of the roller and the frame 11 The upper surface is on the same plane; the bracket 2 includes two parallel columns 20, a first guide rail 21 is installed on the first side of each column 20, and one side of the frame 11 is slidably connected by a slider On the first guide rail 21; the top of the column 20 is provided with a drive mechanism 3 for driving the base 1 to move up and down on the first guide rail 21; the toothed plate 7 is installed on two of the Between the uprights 20, the toothed plate 7 is parallel to the uprights 20; the toothed plate 7 is provided with a row of teeth 71, the tooth 71 includes an inclined surface 711 and a step 712; the upper end of the inclined surface 711 is connected to the top The distance between the blocks 8 is smaller than the distance between the lower end of the inclined surface 711 and the top block 8; the height of one end of the step 712 close to the top block 8 is greater than the height of the other end; When the teeth 71 are matched, the top block 8 can rise along the inclined surface 711 of the teeth 71 and the step 712 and can be clamped on the step 712; the top block 8 is installed on the frame through the pin 81 11, the top block 8 is made of ferromagnetic material; the frame 11 is provided with a through hole 111, the spring 9 is installed in the through hole 111, and the electromagnet 10 is located in the spring 9. At one end, the top block 8 is located at the other end of the spring 9 .

When using the freight elevator, the goods can be directly pushed onto the rollers from the three sides of the frame 11 (the three sides refer to the side close to the first guide rail 21 ), and the rollers are under the action of the thrust It can be rotated, and the rotation of the rollers can easily move the goods to the middle position close to the frame 11. When the goods are stopped, the rollers stop rotating, the goods are parked on the rollers, and then the driving mechanism 3 is used to drive the goods. The base 1 is raised or lowered.

When the freight elevator is carrying goods upwards, the base platform 1 lifts along the first guide rail 21 with the goods, during which the top block 8 slides over the inclined surfaces 711 and steps 712 on the teeth 71, and the inclined surfaces 711 and the steps 712 face the teeth. 71 has resistance but does not completely stop the abutment 1 from rising. If the abutment 1 descends suddenly, the top block 8 is stuck on the barb (the barb ie the step 712 ) on the top of the tooth 71 , and the abutment 1 will not fall off. During the normal descending process of the base 1, the electromagnet 10 is energized and attracts the top block 8, the top block 8 can rotate around the pin 81, and the top block 8 retracts, so that the normal descending of the base 1 will not be hindered. If the chain 34 or the wire rope used for hoisting the abutment 1 suddenly breaks during the descending process, the electromagnet 10 will be powered off, the top block 8 will be ejected under the action of the spring 9, and the top block 8 will be stuck on the barb on the top of the tooth 71 , so as to prevent the abutment 1 from falling out of control. The electromagnet 10 can be powered off manually, or a speed sensor or an acceleration sensor and a controller can be used to control the power off and on of the electromagnet 10 according to the speed or acceleration of the base 1 .

In the anti-fall freight elevator provided by this embodiment, due to the addition of rollers, the resistance of moving goods is greatly reduced, which is convenient for loading and unloading; It is no longer limited by the width of the cabinet door; the base 1 can be prevented from falling through the toothed plate 7, the top block 8, the spring 9 and the electromagnet 10.

Optionally, as shown in FIG. 5 , a speed sensor or an acceleration sensor is installed on the frame 11, the freight elevator further includes a controller, and the speed sensor or the acceleration sensor is electrically connected to the controller, so The controller is electrically connected to the electromagnet 10 , and the controller is used to control the power-off and power-on of the electromagnet 10 . When the speed or acceleration of the base 1 exceeds a preset threshold, the speed sensor or the acceleration sensor can send a signal to the controller, and the controller can turn off the electromagnet 10 according to the signal. Electricity; when the speed or acceleration of the base 1 does not exceed a preset threshold, the speed sensor or the acceleration sensor does not send a signal to the controller, and the electromagnet 10 remains energized. The controller can be manually controlled, and the power-off and power-on of the electromagnet 10 can be controlled by manually operating the controller.

Optionally, as shown in FIG. 1 , the rollers include a plurality of longitudinal rollers 12 and a transverse roller 13 ; the plurality of longitudinal rollers 12 are arranged in parallel and at intervals; The extending directions of the transverse rollers 13 are parallel, the transverse rollers 13 are perpendicular to and spaced apart from the longitudinal rollers 12 , and the transverse rollers 13 are located on the side of the longitudinal rollers 12 away from the vertical column 20 . The provision of the longitudinal rollers 12 and the transverse rollers 13 can push the goods in two directions to facilitate loading and unloading of the goods.

Optionally, as shown in FIG. 1 , the upper surfaces of the plurality of longitudinal rollers 12 and the upper surfaces of the transverse rollers 13 are both higher than the upper surface of the frame 11 . This facilitates the installation of the longitudinal rollers 12 and the transverse rollers 13 . In other embodiments, the longitudinal rollers 12 and the transverse rollers 13 can also be installed inside the frame 11 , the upper surface of the longitudinal roller 12 , the upper surface of the transverse roller 13 and the frame 11 The above are on the same plane.

Optionally, as shown in FIG. 1 , the upper surfaces of the plurality of longitudinal rollers 12 and the upper surfaces of the transverse rollers 13 are located on the same plane, or may not be on the same plane. For example, the upper surface of the longitudinal roller 12 is lower than the upper surface of the transverse roller 13 , and the transverse roller 13 can prevent the goods from slipping off the longitudinal roller 12 .

Optionally, as shown in FIG. 1 and FIG. 5 , the bracket 2 includes a beam 22 connected between the tops of the two uprights 20 ; the drive mechanism 3 includes a motor 31 , and the motor 31 is installed on the beam 22; the motor 31 drives the sprocket 33 to rotate through the reducer 32, and a chain 34 is provided on the sprocket 33; one end of the chain 34 is connected with the top block 8, and the other end is connected with the Counterweight connection. The motor 31 is used to drive the chain 34 to rotate so as to drive the base 1 to move up and down. In other embodiments, the motor 31 can drive the steel wire rope to rotate to drive the base 1 to move up and down.

Optionally, as shown in FIG. 1 , the four corners of the counterweight block are provided with pulleys, and the pulleys are provided with grooves; the second side surface of each of the uprights 20 is provided with a second guide rail, so The counterweight block is located between the second side surfaces of the two uprights 20; the pulley is stuck on the second guide rail through the groove, and the counterweight block is opposite to the second guide rail through the pulley Swipe up and down. In this way, the counterweight block can move up and down smoothly on the second guide rail to prevent the counterweight block from shaking. Fig. 1 shows two counterweight blocks, the freight elevator actually has only one counterweight block, and the two counterweight blocks in Fig. 1 respectively represent the two extreme positions of the counterweight block at the uppermost end and the foremost end.

Optionally, as shown in FIG. 1 , the weight of the counterweight is equal to the weight of the base 1 . In this way, the forces at both ends of the chain 34 can be balanced.

Optionally, as shown in FIG. 1 and FIG. 3 , the base 1 further includes two stabilizer bars 14 , and extension bars 15 are provided at the bottoms of both ends of the side of the frame 11 close to the upright column 20 ; The stabilizer bars 14 are arranged in parallel and spaced apart; one end of the stabilizer bar 14 is connected to the bottom of the frame 11 , and the other end of the stabilizer bar 14 is connected to the bottom of the extension bar 15 . The stabilizer bar 14 , the extension bar 15 and the frame 11 form a triangular structure, which can improve the stability of the base 1 .

Optionally, as shown in FIG. 1 and FIG. 3 , one end of the stabilizer bar 14 is connected to the center of the bottom of the frame 11 . In this way, the supporting force of the stabilizer bar 14 to the frame 11 can be improved.

Optionally, as shown in FIG. 1 and FIG. 3 , a buffer 4 is installed on the lower surface of the extension rod 15 . This can prevent the lower surface of the extension rod 15 from colliding with the ground under abnormal conditions. Under normal conditions, the buffer 4 is in a suspended state.

Optionally, as shown in FIGS. 1 to 3 , the bracket 2 further includes two bottom rods 16 , two diagonal struts 17 and a plurality of connecting rods 18 ; the bottom of each of the uprights 20 is connected to one of the The bottom rods 16 are connected vertically; the two bottom rods 16 are arranged in parallel and spaced apart; one end of the diagonal strut 17 is connected to the upright column 20 , and the other end is connected to the bottom rod 16 ; the two diagonal struts 17 are arranged in parallel and spaced apart; the connecting rods 18 are connected between the two uprights 20 , and a plurality of the connecting rods 18 are arranged in parallel and spaced apart. In this way, the stability of the bracket 2 can be improved.

Optionally, as shown in FIG. 1 to FIG. 3 , the frame 11 is a rectangular frame. This facilitates the manufacture and installation of the frame 11 . In other embodiments, the frame 11 may also have other shapes.

Optionally, as shown in FIG. 1 and FIG. 3 , an upper limit switch 5 and a lower limit switch 6 are installed on the third side of the column 20 , and the third side is parallel to the second side, so The base 1 moves up and down between the upper limit switch 5 and the lower limit switch 6; the upper limit switch 5 and the lower limit switch 6 are electrically connected to the motor 31, and the The upper limit switch 5 and the lower limit switch 6 are used to control the motor 31 to stop running. The upper limit switch 5 and the lower limit switch 6 can limit the travel of the base 1 to prevent the base 1 from detaching from the first guide rail 21 .

To sum up, the anti-falling freight elevator provided by the utility model greatly reduces the resistance of moving goods due to the addition of rollers, which facilitates loading and unloading of goods; When unloading, the goods are no longer limited by the width of the cabinet door; the base 1 can be prevented from falling through the toothed plate 7, the top block 8, the spring 9 and the electromagnet 10.

The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes and modifications made by those of ordinary skill in the art according to the above disclosure all belong to the protection scope of the present invention.

Claims (10)

1. An anti-fall freight elevator, characterized in that it comprises a base, a bracket, a toothed plate, a top block, a spring and an electromagnet, and the base comprises a frame and a roller, and the roller is mounted on the frame; The upper surface of the roller is higher than the upper surface of the frame, or the upper surface of the roller and the upper surface of the frame are on the same plane; The bracket comprises two parallel columns, a first guide rail is installed on the first side of each column, and one side of the frame is slidably connected to the first guide rail through a slider; The top of the column is provided with a driving mechanism for driving the base to move up and down on the first guide rail; The toothed plate is installed between two of the uprights, and the toothed plate is parallel to the upright column; a row of teeth is arranged on the toothed plate, and the tooth includes an inclined surface and a step; the upper end of the inclined surface is parallel to the The distance between the top blocks is smaller than the distance between the lower end of the inclined plane and the top block; the height of one end of the step close to the top block is greater than the height of the other end; The top block is matched with the teeth, the top block can rise along the inclined surface and the steps of the teeth, and can be clamped on the steps; the top block is installed on the frame by a pin, so The top block is made of ferromagnetic material; The frame is provided with a through hole, the spring is installed in the through hole, the electromagnet is located at one end of the spring, and the top block is located at the other end of the spring. 2. The anti-fall freight elevator according to claim 1, wherein a speed sensor or an acceleration sensor is installed on the frame, and the freight elevator further comprises a controller, the speed sensor or the acceleration sensor The sensor is electrically connected to the controller, the controller is electrically connected to the electromagnet, and the controller is used to control the power-off and power-on of the electromagnet. 3. The anti-fall freight elevator according to claim 1, wherein the rollers comprise a plurality of longitudinal rollers and a transverse roller; the plurality of the longitudinal rollers are arranged in parallel and at intervals; The connecting line between the uprights is parallel to the extending direction of the transverse rollers, the transverse rollers are perpendicular to and spaced apart from the longitudinal rollers, and the transverse rollers are located on the side of the longitudinal rollers away from the uprights. 4 . The anti-fall freight elevator according to claim 3 , wherein the upper surfaces of the plurality of longitudinal rollers and the upper surfaces of the transverse rollers are higher than the upper surface of the frame. 5 . 5 . The anti-fall freight elevator according to claim 1 , wherein the bracket comprises a cross beam, and the cross beam is connected between the tops of the two vertical columns; the driving mechanism comprises a motor, and the The motor is installed on the beam; the motor drives the sprocket to rotate through the reducer, and a chain is arranged on the sprocket; one end of the chain is connected with the top block, and the other end is connected with the counterweight block. 6. The anti-fall freight elevator according to claim 5, wherein the four corners of the counterweight are provided with pulleys, and the pulleys are provided with grooves; A second guide rail is provided on each side surface, and the counterweight block is located between the second side surfaces of the two uprights; the pulley is stuck on the second guide rail through the groove, and the counterweight block passes through the The pulley slides up and down relative to the second guide rail. 7 . The anti-fall freight elevator according to claim 5 , wherein the weight of the counterweight is equal to the weight of the base. 8 . 8 . The anti-fall freight elevator according to claim 1 , wherein the base further comprises two stabilizer bars, and the bottoms of both ends of the side of the frame close to the uprights are provided with extension bars. 9 . rods; two stabilizer rods are arranged in parallel and spaced apart; one end of the stabilizer rod is connected to the bottom of the frame, and the other end of the stabilizer rod is connected to the bottom of the extension rod. 9 . The anti-fall freight elevator according to claim 8 , wherein one end of the stabilizer bar is connected to the center of the bottom of the frame. 10 . 10. The anti-fall freight elevator according to claim 1, wherein the bracket further comprises two bottom rods, two diagonal struts and a plurality of connecting rods; the bottom of each of the uprights is connected to a The bottom rods are vertically connected; the two bottom rods are parallel and spaced apart; one end of the diagonal strut is connected to the upright column, and the other end is connected to the bottom rod; the two diagonal bracing rods are parallel and The connecting rods are arranged at intervals; the connecting rods are connected between the two uprights, and a plurality of the connecting rods are parallel and spaced apart.

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