CN212198021U - Car roof protective fence - Google Patents
Car roof protective fence Download PDFInfo
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- CN212198021U CN212198021U CN202020764308.4U CN202020764308U CN212198021U CN 212198021 U CN212198021 U CN 212198021U CN 202020764308 U CN202020764308 U CN 202020764308U CN 212198021 U CN212198021 U CN 212198021U
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Abstract
The utility model discloses a car roof guard rail, which comprises a fixed rail arranged at the top of a car, a movable rail telescopically arranged at the top of the fixed rail, a connecting rod slider mechanism used for driving the movable rail and a beating plate arranged on the wall of a well and used for contacting and controlling the connecting rod slider mechanism; the connecting rod and sliding block mechanism comprises a sliding rail, a sliding block, a connecting rod assembly and a trigger rod; the sliding rail is horizontally arranged on the side wall of the top of the fixed fence, which faces the wall of the well, the sliding block is in sliding fit with the sliding rail, and the connecting rod assembly is respectively hinged with the movable fence and the sliding block; one end of the trigger rod is fixedly connected to the sliding block, and the other end of the trigger rod faces the wall of the well and is used for being matched with the beating plate; in the ascending process of the lift car, the striking plate pushes the trigger rod to enable the connecting rod sliding block mechanism to move, so that the moving fence is contracted to reduce the height. The collision between the guard rail and the ceiling of the hoistway due to the fact that the height of the guard rail exceeds the safety range is avoided.
Description
Technical Field
The utility model belongs to the technical field of the elevator, especially, relate to a sedan-chair top rail guard.
Background
Elevators refer to permanent transportation devices that serve specific floors within a building; the cage of the elevator runs in a shaft communicated with each floor. In order to ensure the use safety of the elevator, the elevator car and the internal structure of the hoistway are required to be periodically overhauled, and a maintenance worker needs to get on the top of the elevator car and check the elevator car along the way during the movement of the elevator car, so that the guard rail is arranged on the top of the elevator car and used for protecting the safety of the maintenance worker, but when the elevator car rises to the top layer, the guard rail is arranged on the top of the elevator car, so that the guard rail has the potential danger of collision of the hoistway ceiling.
In the prior art, a scheme of a car top guard rail telescopic structure is provided, the height of a guard rail can be manually adjusted according to needs, but a corresponding anti-collision structure is not provided, and when maintenance personnel forget to change the height of the guard rail due to negligence, the car is lifted to the top layer, and if the height of the guard rail is greater than the distance between the top of the car and a hoistway ceiling, a roof collision accident can occur.
It is necessary to add a fool-proof structure on the basis of the prior art to avoid the occurrence of roof rushing accidents.
SUMMERY OF THE UTILITY MODEL
The utility model aims to establish the association between the vertical movement of the lifting of the movable fence and the horizontal movement of the sliding block by adopting a connecting rod sliding block mechanism; and a knock-out plate is arranged on the side wall inside the shaft. In the process that the lift car rises to the top layer, if the height of the protective guard exceeds the safety range, the trigger rod is in contact with the striking plate, the trigger rod and the striking plate generate relative motion under the driving of the lift car rising motion, the trigger rod is pushed by the striking plate and pushes the sliding block to move along the direction of the sliding rail, the locking state of the connecting rod sliding block mechanism is released, the movable fence falls under the action of gravity, and therefore the height of the protective guard is reduced and the top impact is avoided.
The utility model discloses a realize through following technical scheme:
a car roof guard rail comprises a fixed rail arranged on the top of a car, a movable rail telescopically arranged on the top of the fixed rail, a connecting rod slider mechanism used for driving the movable rail and a beating plate arranged on the wall of a hoistway and used for contacting and controlling the connecting rod slider mechanism; the connecting rod and sliding block mechanism comprises a sliding rail, a sliding block, a connecting rod assembly and a trigger rod; the sliding rail is horizontally arranged on the side wall of the top of the fixed fence, which faces the wall of the well, the sliding block is in sliding fit with the sliding rail, and the connecting rod assembly is respectively hinged with the movable fence and the sliding block; one end of the trigger rod is fixedly connected to the sliding block, and the other end of the trigger rod faces the wall of the well and is used for being matched with the beating plate; in the ascending process of the lift car, the striking plate pushes the trigger rod to enable the connecting rod sliding block mechanism to move, so that the moving fence is contracted to reduce the height.
By the proposal, the utility model discloses at least, obtain following technological effect:
the connecting rod sliding block mechanism is respectively connected with the fixed fence and the movable fence, and a sliding block in the connecting rod sliding block mechanism horizontally slides on the sliding rail; one end of the connecting rod component is hinged to the moving rail, and the other end of the connecting rod component is hinged to the sliding block and moves along with the sliding block; the moving effect of the sliding block in the horizontal direction lifts or pulls the moving fence through the connecting rod assembly; the friction coefficient between the sliding rail and the sliding block can be increased, so that the friction force between the sliding block and the sliding rail is greater than the gravity of the movable fence, and the movable fence can keep the current height from moving without the action of external force; a striking plate is preset on the inner wall of the hoistway and is used for being matched with a trigger rod on the sliding block; when the lift car rises to the height close to the top floor, the striking plate is in contact with the trigger rod, the trigger rod and the striking plate move relatively along with the rising movement of the lift car, and the trigger rod drives the sliding block to move horizontally due to the fact that the striking plate blocks the horizontal offset movement, so that the height of the moving fence is reduced. The collision between the guard rail and the ceiling of the hoistway due to the fact that the height of the guard rail exceeds the safety range is avoided.
It is worth mentioning that when the sliding block slides on the sliding rail, the closer the sliding block is to the hinge point of the connecting rod assembly and the moving fence, the closer the connecting rod assembly is to the state vertical to the horizontal plane, and the higher the moving fence is jacked by the connecting rod assembly; otherwise, the slider is far away from the hinge point of the connecting rod assembly and the moving rail, and the height of the moving rail is reduced. Therefore, when the height of the guard rail exceeds the safety range, the sliding block is inevitably positioned in an interval on the sliding rail close to the hinge point of the connecting rod assembly and the moving rail, and the beating plate is arranged at the position corresponding to the interval. The trigger rod is only contacted with the striking plate when the height of the moving fence exceeds a safety range, and if the height of the moving fence does not exceed the safety range, the sliding block is not in an interval close to a hinge point of the connecting rod assembly and the moving fence, and the striking plate and the trigger rod are staggered and cannot be contacted.
Preferably, the striking plate comprises a mounting portion and an inclined portion connected to each other; the mounting part is used for being fixedly connected with the well wall; the inclined part is a plate body which is obliquely arranged along the length direction of the slide rail, the included angle between the plate body and the horizontal plane is alpha, and alpha is more than 0 degree and less than 90 degrees.
The mounting part of the striking plate is used for mounting and fixing, and the inclined part is used for contacting with the trigger rod. The inclined part is a plate body which is obliquely arranged, the trigger rod is contacted with the inclined part from the bottom end of the plate body, so that the contact point of the inclined part and the trigger rod slides along the inclined slope, and the horizontal component force of the inclined motion is used as power for providing sliding of the sliding block along the sliding rail. The larger the inclination of inclination, the faster the speed of horizontal movement of the slide during the ascent of the car.
Preferably, at least one limiting point is arranged in the sliding rail and used for limiting the movement of the sliding block so as to keep the height of the movable rail.
The limiting point is used for positioning the sliding block in the sliding rail, so that the moving fence can be kept at a required height when being adjusted. Since the guard rail only needs to be adjusted between the use height and the bump height, it is not necessary to position the slider at any position. And if the friction coefficient between the sliding block and the sliding rail is too large, the resistance of the adjusting sliding block is too large and the adjustment is difficult.
Preferably, the plane where the limiting point is perpendicular to the wall of the well is intersected with the beating plate.
When the stay height of the movable rail is at the using height of the protective guard, the sliding block is restrained at the limit point of the sliding rail to keep the position. In order to enable the beating plate to be accurately contacted with the trigger rod on the sliding block, when the beating plate is arranged, the limiting point is intersected with the beating plate in the plane perpendicular to the wall of the well.
Preferably, the connecting rod assembly comprises a first connecting rod, a second connecting rod and a third connecting rod; one ends of the three connecting rods are hinged with each other, the other end of the first connecting rod is hinged with the movable fence at a first hinged point, the other end of the second connecting rod is hinged with the fixed fence at a second hinged point, and the other end of the third connecting rod is hinged with the sliding block.
The connecting rod assembly comprises three connecting rods, the first connecting rod and the second connecting rod are hinged end to end, and the distance between the first hinge point and the second hinge point is changed by adjusting the size of the included angle formed by the intersection of the first connecting rod and the second connecting rod, so that the movable fence can ascend or descend relative to the fixed fence. When the sliding block slides along the sliding rail, the third connecting rod pulls the intersecting included angle of the first connecting rod and the second connecting rod along with the movement of the sliding block to generate angle change. The structure utilizes the principle of triangular stability, the first connecting rod transmits the weight of the movable fence to the second connecting rod and the third connecting rod, the second connecting rod can share the load borne by the third connecting rod, and the stress value required for fixing the third connecting rod is reduced, namely the stress requirement for limiting the position of the sliding block in the sliding rail is reduced; facilitating the simplification of the operating steps. The third connecting rod can lock the intersection included angle of the first connecting rod and the second connecting rod after being fixed, so that the first connecting rod and the second connecting rod cannot move, and the limiting function of the movable fence is realized.
Preferably, the connecting rod assembly comprises a fourth connecting rod; one end of the fourth connecting rod is hinged to the moving rail, and the other end of the fourth connecting rod is hinged to the sliding block.
The connecting rod assembly can also be only composed of a single fourth connecting rod, one end of the fourth connecting rod moves on the sliding rail along with the sliding block, and the other end of the fourth connecting rod is hinged to the movable rail; because the length of the fourth connecting rod is fixed after installation, when the sliding block moves to the farthest end away from the hinged position of the fourth connecting rod and the movable fence, the included angle between the fourth connecting rod and the horizontal plane is at the minimum value, and the height of the movable fence is at the minimum value. When the slide block moves to the nearest end away from the hinged position of the fourth connecting rod and the movable fence, the included angle between the fourth connecting rod and the horizontal plane is vertical or nearly vertical, and the height of the movable fence is at the highest value. In the scheme, the fourth connecting rod bears the weight of all the movable fences, the requirement for limiting the position of the sliding block in the sliding rail is high, but the fourth connecting rod is simple in structure and easy to install and maintain, and the fourth connecting rod is used in a high-low matching mode as an alternative scheme and a temporary replacement scheme.
Preferably, the fixed fence comprises two first supporting columns, a plurality of second supporting columns and a first cross beam; the first cross beam is erected at the top ends of the plurality of second supporting columns, and two ends of the first cross beam are fixedly connected to the side walls of the first supporting columns; the first supporting column is internally provided with a cavity, and the top end of the first supporting column is provided with an opening communicated with the cavity for mounting the movable fence.
The two first supporting columns are located on two side edges of the fixed fence, and are used for installing the movable fence while providing fixed support for the first cross beam. The second support column is supported on the bottom surface of the first cross beam to play a supporting role, and meanwhile, the support columns jointly form a fence to play a blocking effect, so that people are prevented from falling. The first cross beam is used for blocking personnel to pass through as a main protection structure, the first cross beam is also used as an installation carrier of the fixed fence, and the sliding rail and the connecting rod assembly are installed on the first cross beam.
Preferably, the movable fence comprises two telescopic rods respectively embedded in the two first supporting column cavities and a second cross beam erected at the top ends of the two telescopic rods.
The telescopic link cooperates with first support column, realizes the sliding connection effect between removal fence and the fixed fence through telescopic link telescopic motion in the cavity of first support column. The second crossbeam is used for blockking personnel to pass through as main protection architecture the same, and the second crossbeam still is as the installation carrier of removal fence, and link assembly installs on the second crossbeam.
Preferably, the shoe protection plate is further included; the toe guard perpendicular to the top surface of the car sets up, just the both sides of toe guard are fixed in the bottom of two adjacent support columns respectively.
When the elevator moves in the well, if personnel carelessly stretch out the sole from the space between the support columns, the danger of shearing the sole easily occurs, so the toe guard is installed at the bottom of two adjacent support columns and used for blocking the sole of the personnel, and the shearing accident caused by the fact that the sole protrudes out of the plane of the side wall of the lift car is avoided.
Preferably, the device also comprises a gas spring; the air spring is fixedly installed on the fixed fence, and the telescopic end of the air spring is connected with the movable fence.
After the striking plate pushes the trigger rod, the connecting rod assembly pulls the movable rail to descend along with the movement of the sliding block. In order to avoid the phenomenon that the movable fence collides with the fixed fence due to overlarge kinetic energy in the descending process and causes structural damage to the movable fence, the fixed fence or the connecting rod assembly, an air spring is additionally arranged between the fixed fence and the movable fence, and the buffering effect is achieved.
Drawings
Fig. 1 is a schematic front view of a car top guard rail according to an embodiment of the present invention.
Fig. 2 is a schematic side view of a car top guard according to an embodiment of the present invention.
Fig. 3 is a schematic perspective view of a maximum height state of the car top guard rail according to an embodiment of the present invention.
Fig. 4 is a schematic view of a three-dimensional structure for adjusting a moving state of a car top guard rail according to an embodiment of the present invention.
Fig. 5 is a schematic view of a striking plate structure provided in an embodiment of the present invention.
Legend:
1 fixing the fence; 2 moving the column; 3, a connecting rod sliding block mechanism; 4, beating the plate; 5, protecting the foot plate; 6, a gas spring;
11 a first support column; 12 a second support column; 13 a first cross member;
21, a telescopic rod; 22 a second cross member;
31 a slide rail; 32 slide blocks; 33 a connecting rod assembly; 34 a trigger lever;
41 an installation part; 42 an inclined portion;
331 a first link; 332 a second link; 333 third link; 334 a first hinge point; 335 second hinge point
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
Please refer to fig. 1-5.
Example 1:
as shown in fig. 1-5, a car roof guard rail comprises a fixed rail 1 mounted on the top of a car, a movable rail 2 telescopically mounted on the top of the fixed rail 1, a link slider 32 mechanism 3 for driving the movable rail 2, and a striking plate 4 mounted on a hoistway wall for contacting and controlling the link slider 32 mechanism 3; the link slider 32 mechanism 3 comprises a slide rail 31, a slider 32, a link assembly 33 and a trigger rod 34; the slide rail 31 is horizontally arranged on the side wall of the top of the fixed fence 1 facing the wall of the well, the slide block 32 is in sliding fit with the slide rail 31, and the connecting rod assembly 33 is respectively hinged with the movable fence 2 and the slide block 32; one end of the trigger rod 34 is fixedly connected to the sliding block 32, and the other end faces the wall of the well and is used for matching with the beating plate 4; during the ascending process of the car, the striking plate 4 pushes the trigger rod 34 to enable the connecting rod sliding block 32 mechanism 3 to move, so that the moving fence 2 is contracted and lowered in height.
By the proposal, the utility model discloses at least, obtain following technological effect:
the connecting rod sliding block 32 mechanism 3 is respectively connected with the fixed fence 1 and the movable fence 2, and a sliding block 32 in the connecting rod sliding block 32 mechanism 3 horizontally slides on the sliding rail 31; one end of the connecting rod component 33 is hinged with the moving rail 2, and the other end is hinged with the sliding block 32 and moves along with the sliding block 32; the horizontal movement effect of the slide block 32 lifts or pulls the moving fence 2 through the connecting rod assembly 33; the friction force between the sliding block 32 and the sliding rail 31 can be larger than the gravity of the moving fence 2 by increasing the friction coefficient between the sliding rail 31 and the sliding block 32, so that the moving fence 2 can keep the current height not to move under the action of no external force; a striking plate 4 is preset on the inner wall of the hoistway, and the striking plate 4 is used for being matched with a trigger rod 34 on a sliding block 32; when the lift car rises to a height close to the top floor, the striking plate 4 is in contact with the trigger rod 34, the trigger rod 34 and the striking plate 4 generate relative motion along with the rising motion of the lift car, the trigger rod 34 generates horizontal offset motion due to the blocking of the striking plate 4, the slide block 32 is driven to move horizontally, and therefore the height of the moving fence 2 is reduced. The collision between the guard rail and the ceiling of the hoistway due to the fact that the height of the guard rail exceeds the safety range is avoided.
It should be noted that when the sliding block 32 slides on the sliding rail 31, the closer the sliding block 32 is to the hinge point between the link assembly 33 and the moving fence 2, the closer the link assembly 33 is to the state perpendicular to the horizontal plane, the higher the moving fence 2 is lifted by the link assembly 33; conversely, the slider 32 moves away from the hinge point of the link assembly 33 with the moving rail 2, and the height of the moving rail 2 is lowered. Therefore, when the height of the guard rail exceeds the safety range, the slider 32 is inevitably positioned on the slide rail 31 in a section near the hinge point of the link assembly 33 and the moving rail 2, and the striking plate 4 is disposed at a position corresponding to the section. The trigger rod 34 is only contacted with the striking plate 4 when the height of the moving fence 2 exceeds the safety range, if the height of the moving fence 2 does not exceed the safety range, the slide block 32 is not in the interval close to the hinge point of the connecting rod assembly 33 and the moving fence 2, and the striking plate 4 is not contacted with the trigger rod 34 in a dislocation way.
Based on the above scheme, the striking plate 4 is used for pushing the sliding block 32 away from the locking position by pressing the trigger rod 34, so that the moving fence 2 automatically descends under the action of gravity, but in the actual operation process, it is found that, because friction exists between the sliding block 32 and the sliding rail 31, and the friction coefficient increases with the increase of dust and dirt accumulated in the sliding rail 31, the friction force between the sliding block 32 and the sliding rail 31 is close to or even greater than the thrust generated by the gravity of the moving fence 2 on the sliding block 32 through the connecting rod assembly 33, so that the moving fence 2 descends slowly or even cannot reduce the height, and the risk of striking still exists, therefore, to improve the problem, the action effect of the striking plate 4 is adjusted, so that after the locking position of the sliding block 32 is unlocked, the trigger rod 34 is continuously pushed to provide the thrust for the sliding block 32, the sliding block 32 is moved to the safe position, and the moving fence 2 is ensured to descend to the safe height, in one embodiment, the striking plate 4 includes a mounting portion 41 and an inclined portion 42 connected to each other; the mounting part 41 is used for being fixedly connected with a well wall; the inclined portion 42 is a plate body which is obliquely arranged along the length direction of the slide rail 31, the included angle between the plate body and the horizontal plane is alpha, and alpha is more than 0 degree and less than 90 degrees.
The mounting portion 41 of the striking plate 4 is used for mounting and fixing, and the inclined portion 42 is used for contacting the trigger lever 34. The inclined portion 42 is a plate body which is obliquely arranged, the trigger lever 34 is contacted with the inclined portion 42 from the bottom end of the plate body, the contact point of the inclined portion 42 and the trigger lever 34 slides along the inclined slope, and the horizontal direction component force of the inclined movement is used as power for providing the sliding of the slide block 32 along the slide rail 31. The greater the incline, the faster the speed at which the slide 32 moves horizontally during car ascent. The longer the projection of the inclined portion 42 on the horizontal plane, the longer the distance the push slider 32 moves, and the greater the height the moving fence 2 descends.
Based on the above solution, in order to make the sliding block 32 be limited at the designated position so as to ensure that the height of the moving rail 2 is fixed, in an embodiment, at least one limiting point is provided in the sliding rail 31 for limiting the movement of the sliding block 32 to maintain the height of the moving rail 2.
The limit points are used for positioning the slide 32 in the slide rail 31 so that the moving rail 2 remains in position when adjusted to the desired height. Since the guard rail only needs to be adjusted between the use height and the bump height, it is not necessary to position the slider 32 at any position. If the coefficient of friction between the slider 32 and the slide rail 31 is too large, the resistance of the adjustment slider 32 becomes too large, which makes adjustment difficult. The limiting point may be a scheme of providing a convex point on a contact surface between the slide rail 31 and the slider 32, a scheme of providing a rough surface at one end in the slide rail 31, or a scheme of providing a limiting groove in the slide rail 31, which are various and common schemes and are conventional schemes that can be replaced with each other, and are not described herein.
Based on the above scheme, in order to enable the strike plate 4 preset on the hoistway wall to accurately contact with the trigger rod 34 and enable the slider 32 to be separated from the locking position of the slider in the slide rail 31, in an embodiment, the plane where the limiting point is perpendicular to the hoistway wall intersects with the strike plate 4.
When the stop height of the movable rail 2 is at the use height of the guard rail, the slide block 32 is restrained at the limit point of the slide rail 31 to keep the position. In order to ensure that the beating plate 4 can be accurately contacted with the trigger rod 34 on the sliding block 32, when the beating plate 4 is arranged, the limiting point is positioned in a plane vertical to the wall of the well and is intersected with the beating plate 4.
Based on the above solution, since the height of the moving fence 2 is adjusted by the connecting rod assembly 33, and the connecting rod assembly 33 needs to bear most of the weight of the moving fence 2, the force value consumed when the connecting slider 32 at the bottom end of the connecting rod assembly 33 is pushed or limited is extremely large, so as to reduce the force loss, and at the same time, the stress of the connecting rod assembly 33 can be dispersed, and the service life is prolonged, in an embodiment, the connecting rod assembly 33 includes the first connecting rod 331, the second connecting rod 332, and the third connecting rod 333; one ends of the three connecting rods are hinged with each other, the other end of the first connecting rod 331 is hinged with the moving fence 2 at a first hinge point 334, the other end of the second connecting rod 332 is hinged with the fixed fence 1 at a second hinge point 335, and the other end of the third connecting rod 333 is hinged with the sliding block 32.
The link assembly 33 includes three links, the first link 331 and the second link 332 are hinged end to end, and the distance between the first hinge point 334 and the second hinge point 335 is changed by adjusting the size of the angle at which the first link 331 and the second link 332 intersect, so that the moving rail 2 is raised or lowered relative to the fixed rail 1. When the slide block 32 slides along the slide rail 31, the third link 333 tears the intersection angle of the first link 331 and the second link 332 to change with the movement of the slide block 32. The structure utilizes the principle of triangular stability, the first connecting rod 331 transmits the weight of the moving fence 2 to the second connecting rod 332 and the third connecting rod 333, the second connecting rod 332 can bear the load on the third connecting rod 333, and the stress value required for fixing the third connecting rod 333 is reduced, namely the stress requirement for limiting the position of the sliding block 32 in the sliding rail 31 is reduced; facilitating the simplification of the operating steps. After the third connecting rod 333 is fixed, the intersecting angle between the first connecting rod 331 and the second connecting rod 332 can be locked, so that the first connecting rod 331 and the second connecting rod 332 cannot move, that is, the distance between the first hinge point 334 and the second hinge point 335 is kept unchanged, thereby realizing the limiting function of the movable fence 2.
Based on the scheme, the situations that parts are damaged and replacement parts are insufficient exist in the actual construction process; if the guard rail is urgently needed, an alternative solution with a simple structure is needed for emergency use, and therefore, in an embodiment, the connecting rod assembly 33 includes a fourth connecting rod; one end of the fourth connecting rod is hinged to the moving rail 2, and the other end of the fourth connecting rod is hinged to the sliding block 32.
The connecting rod assembly 33 can also be constituted by a single fourth connecting rod, one end of which moves on the slide rail 31 along with the slide block 32 and the other end of which is hinged to the moving rail 2; because the length of the fourth link is fixed after installation, when the slide block 32 moves to the farthest end away from the hinge joint of the fourth link and the moving fence 2, the included angle between the fourth link and the horizontal plane is at the minimum, and the height of the moving fence 2 is at the minimum. When the slide block 32 moves to the nearest end away from the hinge joint of the fourth link and the moving rail 2, the included angle between the fourth link and the horizontal plane is vertical or nearly vertical, and the height of the moving rail 2 is at the highest value. In this solution, the fourth link bears the weight of all the moving rails 2, and the requirement for limiting the position of the slider 32 in the slide rail 31 is high, but due to the simple structure and the easy installation and maintenance, the fourth link is used in combination with the fourth link in a high-low manner as an alternative or a temporary alternative.
Based on the above scheme, in order to protect the personnel from passing through, in an embodiment, the fixed fence 1 includes two first support columns 11, a plurality of second support columns 12 and a first cross beam 13; the first cross beam 13 is erected at the top ends of the plurality of second supporting columns 12, and two ends of the first cross beam 13 are fixedly connected to the side walls of the first supporting columns 11; the first support column 11 is formed with a cavity therein and has an opening at the top end for mounting the movable rail 2.
Two first support columns 11 are located at both side edges of the fixed fence 1, and are used for installing the movable fence 2 while providing a fixed support for the first cross beam 13. The second supporting columns are supported on the bottom surface of the first cross beam 13 to play a supporting role, and meanwhile, the supporting columns jointly form a fence to play a blocking effect, so that people are prevented from falling. The first beam 13 is also used for blocking personnel from passing through as a main protection structure, and the first beam 13 is also used as a mounting carrier of the fixed fence 1, and the sliding rail 31 and the connecting rod assembly 33 are both mounted on the first beam 13.
Based on the above solution, in order to protect the person, in an embodiment, the movable rail 2 includes two telescopic rods 21 respectively embedded in the cavities of the two first supporting columns 11 and a second cross beam 22 erected at the top ends of the two telescopic rods 21.
Based on the above scheme, when the elevator moves in the hoistway, if a person carelessly extends the sole out of the gap between the support columns, the danger of cutting the sole is easy to occur, and therefore, in one embodiment, the elevator further comprises a foot protection plate 5; the top surface setting of baseboard 5 perpendicular to car, just baseboard 5's both sides are fixed in the bottom of two adjacent support columns respectively.
The foot protection plates 5 are arranged at the bottoms of the two adjacent supports, and the foot protection plates 5 are used for blocking soles of people and avoiding shearing accidents caused by the fact that the soles protrude out of the side wall plane of the lift car.
Based on the scheme, after the striking plate 4 presses the trigger rod 34, the connecting rod assembly 33 pulls the moving rail 2 to descend along with the movement of the sliding block 32. In order to avoid that the moving fence 2 collides with the fixed fence 1 due to excessive kinetic energy in the descending process, so that the moving fence 2, the fixed fence 1 or the connecting rod assembly 33 is damaged in structure, in one embodiment, the device further comprises a gas spring 6; the gas spring 6 is fixedly arranged on the fixed fence 1, and the telescopic end of the gas spring 6 is connected with the movable fence 2. Install gas spring 6 additional between fixed fence 1 and removal fence 2 for no matter remove fence 2 and all can receive the resistance influence that gas spring 6 produced at the in-process of rising or descending, thereby play the effect of buffering, avoid removing the violent vibrations and the impact that produces of fence 2 action and to remove fence 2, fixed fence 1 or the injury that connecting rod slider mechanism 3 caused.
Example 2:
as shown in fig. 1-5, a car roof guard rail comprises a fixed rail 1, a movable rail 2, a connecting rod slider mechanism 3, a striking plate 4, a toe guard 5 and a gas spring 6;
the fixed fence 1 comprises two first supporting columns 11 arranged at two ends, a first cross beam 13 with two ends respectively connected with the two first supporting columns 11, and a second supporting column 12 supported at the bottom of the first cross beam 13;
the movable fence 2 comprises telescopic rods 21 which are arranged at two ends and matched with the first supporting columns 11 and second cross beams 22 of which two ends are respectively connected with the two telescopic rods;
a cavity is formed inside the first support column 11, the top end of the first support column is provided with an opening, and the telescopic rod 21 is telescopically embedded in the cavity of the first support column 11; the movable fence 2 and the fixed fence 1 form telescopic matching;
the link slider mechanism 3 comprises a slide rail 31 mounted on the first beam 13, a slider 32 slidably connected to the slide rail 31, a link assembly 33 and a trigger lever 34;
the link assembly 33 includes a first link 331, a second link 332, and a third link 333; one ends of the three connecting rods are hinged with each other, wherein the other end of the first connecting rod 331 is hinged with the second cross beam 22 at a first hinge point 334; the other end of the second connecting rod 332 is hinged to the second hinge point 335 with the first cross beam 13; the third connecting rod 333 is hinged with the slide block 32;
the trigger bar 34 is fixedly arranged on the surface of the slide block 32;
the beating plate 4 comprises an installation part 41 and an inclined part 42, wherein the inclined part 42 is an inclined setting plate body with an included angle alpha with the horizontal plane; during the ascending process of the elevator, the trigger bar 34 contacts with the inclined part 42 from bottom to top along with the movement of the elevator; the trigger rod 34 slides obliquely on the plate surface of the inclined portion 42 along with the linear ascending motion of the elevator, and generates a component force in a horizontal direction, so as to push the slider 32 to slide horizontally in the slide rail 31, thereby driving the link assembly 33 to move, so that the distance between the first hinge point 334 and the second hinge point 335 is reduced, that is, the height of the moving rail 2 is reduced.
The foot guard plates 5 are arranged at the bottoms of the two adjacent support columns and are vertically connected with the top of the lift car, and are used for preventing soles of people from protruding out of the side walls of the lift car and avoiding injury accidents caused by cutting of the soles.
The gas spring 6 is arranged on any one second supporting column 12, the telescopic end of the gas spring is connected with the second cross beam 22, and according to the characteristic of delayed motion, the movable fence 2 can be influenced by resistance generated by the gas spring 6 in the process of ascending or descending, so that the buffer effect is achieved, and the damage to the movable fence 2, the fixed fence 1 or the connecting rod slider mechanism 3 caused by vibration and impact generated by violent actions of the movable fence 2 is avoided.
In this embodiment, the line connecting the first hinge point 334 and the second hinge point 335 is perpendicular to the horizontal plane. That is, the sum of the lengths of the first link 331 and the second link 332 is the maximum lifting height of the moving fence 2. And the structure enables the third connecting rod 333 to move at the hinge point of tearing the first connecting rod 331 and the second connecting rod 332, the moving effect of the first connecting rod 331 and the second connecting rod 332 can be realized only by providing a small pulling force or pushing force in the horizontal direction, and the weight of the moving fence 2 is mainly supported by the first connecting rod 331 and the second connecting rod 332, so that the load of the third connecting rod 333 is reduced, and meanwhile, the stress value and the structural requirement required by the limit of the sliding block 32 are reduced.
In the embodiment, the sum of the height of the fixed rail 1 and the height of the movable rail 2 for jacking is the using height H of the guard rail. Because in the actual work progress, the use height H of rail guard need carry out the adaptation according to the width in the well:
when the distance from the outer edge of the protective guard to the wall of the well is less than or equal to 0.85m, the use height of the protective guard is 0.7 m; in order to avoid top impact, the height H of the guard rail is changed by adjusting the jacking height of the movable rail 2, wherein H is more than or equal to 0.45m and less than or equal to 0.7 m;
when the distance from the outer edge of the protective guard to the wall of the well is more than 0.85m, the standard specification of 1.10m is selected as the use height of the protective guard; in order to avoid top impact, the height H of the guard rail is changed by adjusting the jacking height of the movable rail 2, wherein H is more than or equal to 0.70m and less than or equal to 1.10 m.
Various technical features in the above embodiments may be arbitrarily combined as long as there is no conflict or contradiction in the combination between the features, but is limited to the space and is not described one by one.
The present invention is not limited to the above embodiment, and various modifications and variations of the present invention are intended to be included within the scope of the claims and the equivalent technology if they do not depart from the spirit and scope of the present invention.
Claims (10)
1. A car top protective guard is characterized by comprising a fixed fence arranged at the top of a car, a movable fence telescopically arranged at the top of the fixed fence, a connecting rod slider mechanism used for driving the movable fence and a beating plate arranged on a hoistway wall and used for contacting and controlling the connecting rod slider mechanism; the connecting rod and sliding block mechanism comprises a sliding rail, a sliding block, a connecting rod assembly and a trigger rod; the sliding rail is horizontally arranged on the side wall of the top of the fixed fence, which faces the wall of the well, the sliding block is in sliding fit with the sliding rail, and the connecting rod assembly is respectively hinged with the movable fence and the sliding block; one end of the trigger rod is fixedly connected to the sliding block, and the other end of the trigger rod faces the wall of the well and is used for being matched with the beating plate; in the ascending process of the lift car, the striking plate pushes the trigger rod to enable the connecting rod sliding block mechanism to move, so that the moving fence is contracted to reduce the height.
2. The ceiling guard rail of claim 1 wherein the striking plate includes a mounting portion and an inclined portion connected to each other; the mounting part is used for being fixedly connected with the well wall; the inclined part is a plate body which is obliquely arranged along the length direction of the slide rail, the included angle between the plate body and the horizontal plane is alpha, and alpha is more than 0 degree and less than 90 degrees.
3. The ceiling guard rail of claim 1 wherein at least one limit point is disposed within the slide rail for limiting movement of the slide to maintain the height of the moving rail.
4. The car top guard rail of claim 3, wherein the limiting points are positioned on a plane perpendicular to the wall of the hoistway and intersect with the beating plate.
5. The ceiling guard rail of claim 1 wherein the linkage assembly comprises a first linkage, a second linkage, and a third linkage; one ends of the three connecting rods are hinged with each other, the other end of the first connecting rod is hinged with the movable fence at a first hinged point, the other end of the second connecting rod is hinged with the fixed fence at a second hinged point, and the other end of the third connecting rod is hinged with the sliding block.
6. The ceiling guard rail of claim 1 wherein the linkage assembly comprises a fourth link; one end of the fourth connecting rod is hinged to the moving rail, and the other end of the fourth connecting rod is hinged to the sliding block.
7. The car top guard rail according to any one of claims 1 to 6, wherein the fixing rail comprises two first support columns, a plurality of second support columns and a first cross beam; the first cross beam is erected at the top ends of the plurality of second supporting columns, and two ends of the first cross beam are fixedly connected to the side walls of the first supporting columns; the first supporting column is internally provided with a cavity, and the top end of the first supporting column is provided with an opening communicated with the cavity for mounting the movable fence.
8. The car roof guard rail of claim 7, wherein the moving rail comprises two telescopic rods respectively embedded in the cavities of the two first support columns and a second cross beam erected at the top ends of the two telescopic rods.
9. The ceiling guard rail of claim 7 further comprising a toe guard; the toe guard perpendicular to the top surface of the car sets up, just the both sides of toe guard are fixed in the bottom of two adjacent support columns respectively.
10. The ceiling guard rail of claim 7, further comprising a gas spring; the air spring is fixedly installed on the fixed fence, and the telescopic end of the air spring is connected with the movable fence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020764308.4U CN212198021U (en) | 2020-05-09 | 2020-05-09 | Car roof protective fence |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020764308.4U CN212198021U (en) | 2020-05-09 | 2020-05-09 | Car roof protective fence |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212198021U true CN212198021U (en) | 2020-12-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020764308.4U Active CN212198021U (en) | 2020-05-09 | 2020-05-09 | Car roof protective fence |
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| Country | Link |
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| CN (1) | CN212198021U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112938708A (en) * | 2021-02-05 | 2021-06-11 | 广州广日电梯工业有限公司 | Elevator safety control system, safety control method and safety control device |
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2020
- 2020-05-09 CN CN202020764308.4U patent/CN212198021U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112938708A (en) * | 2021-02-05 | 2021-06-11 | 广州广日电梯工业有限公司 | Elevator safety control system, safety control method and safety control device |
| CN112938708B (en) * | 2021-02-05 | 2022-08-09 | 广州广日电梯工业有限公司 | Elevator safety control system, safety control method and safety control device |
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