Lifting column and platform safety device

Abstract

The utility model belongs to the technical field of platform protection equipment, and particularly provides a lifting column and a platform safety device. The lifting column comprises a lifting column body and a moving seat used for installing a protective part, the moving seat moves up and down along the lifting column body, at least one rolling wheel is arranged on the moving seat, and the moving seat is in rolling fit with the lifting column body through the rolling wheel. The platform safety device comprises a fixed column and a lifting column consistent with the lifting column in structure. In the up-and-down moving process of the moving seat, the rolling wheels are in guiding fit with the guiding faces, the guiding effect on up-and-down lifting of the moving seat is achieved, and the use requirement is met. Compared with the scheme of a linear bearing and a ball sliding block in the prior art, the bearing of the roller is easy to seal, the diameter of the roller is large, the resistance of rolling friction is small, and meanwhile common dust cannot affect passing of the roller. Therefore, the resistance generated when the movable seat moves up and down is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of platform protection equipment, in particular to a lifting column and a platform safety device. Background Art

[0002] The existing railway platforms in my country are generally open platforms. Some passengers have weak safety awareness and often walk around the platform safety line at will. Once a passenger accidentally falls from the platform, it may cause a serious safety accident. In addition, my country has now formed an efficient railway network, with billions of passengers traveling by train every year. The need to configure a safety protection system on railway platforms is imminent.

[0003] Unlike the protective doors of subway platforms, the parking positions of high-speed trains or ordinary passenger trains are difficult to control accurately, which requires the safety protection system to open a wider passenger passage as much as possible when opening the door. The applicant has conducted research in this field for many years. For example, the Chinese utility model patent with the authorization announcement number CN211280998U provides a lifting safety door (platform safety device) for railway platforms. The lifting safety door includes a fixed column and a lifting column assembled on the column for lifting and lowering. The lifting column is provided with a number of sliders arranged up and down. The adjacent sliders are connected by a flexible connector. The slider is used to connect the isolation protection parts (safety ropes, protective belts, protective tubes, etc.). The lifting column and the bottom slider are connected by a synchronous belt. When the lifting column is lifted up and down, the linkage mechanism can drive the bottom slider to move up and down, and drive the protection parts to move up and down, thereby opening or closing the passage for passengers to get on and off the train.

[0004] In the above platform safety device, an optical axis is provided on the lifting column, and the slider is installed on the optical axis through a linear bearing to achieve its upward and downward guided movement relative to the lifting column. However, the platform is an open environment outside, and daily dust and other impurities can easily enter the linear bearing, causing the linear bearing to get stuck, increasing the resistance of the slider when it rises. At the same time, when the lifting column rises, the protective part will be pulled, which will generate a large lateral force on the slider, and the optical axis will also be easily deformed, increasing the resistance.

[0005] Regarding the matching form of sliders and guide rails, in addition to the matching of optical axes and linear bearings, another commonly used method is to use ball guide sliders and linear guide rails. For example, the Chinese invention patent application with application publication number CN116464383A (publication date: 2023.07.21) discloses a shield door structure (platform safety device) for high-speed railway platforms. The shield door structure also includes a fixed column and a lifting column. The lifting column is provided with a number of ball guide sliders that guide and move up and down, and a guide rail that provides a guiding function for the slider. When the lifting column rises, it can also drive the lowest slider to move upward through a linkage mechanism. However, when used in an open environment such as a platform, if dust and other impurities enter the ball slider, it is also easy to increase the resistance of the ball slider when it rises. In severe cases, the ball slider will be stuck, causing the slider connected to the protective part to be unable to rise normally. At the same time, under the action of lateral force, due to the small contact area between the ball slider and the guide rail, the actual friction between the ball and the guide rail is very large, and the resistance during the rise is also large.

[0006] For high-speed trains, the time they stay at the platform is limited. If the protective element cannot be raised normally within the specified time, it will affect passengers getting on and off the train. Therefore, it is very necessary to improve the reliability of the platform safety device, especially the slider connected with the protective element. Utility Model Content

[0007] The purpose of the utility model is to provide a lifting column of a platform safety device to solve the technical problem in the prior art that the moving seat connected with the protective member has a large resistance to moving up and down in dusty, extremely cold, high temperature and other environments outdoors or when the lateral pulling force is large. The purpose of the utility model is also to provide a platform safety device to solve the same technical problem.

[0008] In order to achieve the above-mentioned purpose, the technical solution of the lifting column of the platform safety device provided by the utility model is:

[0009] A lifting column of a platform safety device comprises a lifting column body and a moving seat for installing a protective element, the moving seat moves up and down along the lifting column body, at least two rollers are arranged on the moving seat, and the rollers and the lifting column body are rollingly matched; a guide rail is arranged on the lifting column body, and the opposite rail surfaces of the same guide rail form a guide surface, and the rollers are arranged at intervals on the left and right and respectively cooperate with the left and right sides of the same guide rail in a guiding rolling manner;

[0010] Alternatively, the lifting column body is provided with two guide rails arranged in parallel on the left and right sides, and the opposite rail surfaces of the two guide rails form a guide surface, and the rollers are arranged at intervals on the left and right sides and respectively cooperate with the opposite side of different guide rails in a guiding rolling manner;

[0011] Alternatively, two guide rails arranged in parallel on the lifting column body are provided, and the opposite rail surfaces of the two guide rails form guide surfaces. The rollers are arranged at intervals on the left and right and respectively cooperate with the opposite side guide rolling of different guide rails.

[0012] As a further improvement, in the case where the opposite rail surfaces of the same guide rail form the guide surface, the guide rail includes at least two rails arranged in parallel on the left and right sides.

[0013] As a further improvement, among the rollers on the left and right sides that cooperate with the same guide rail, the number of rollers on at least one side is more than two, and they are staggered and arranged in correspondence with the rollers on the other side.

[0014] As a further improvement, in the case of two guide rails with opposite or reverse rail surfaces, the guide rail is arranged on one side of the front and rear sides of the lifting column body.

[0015] As a further improvement, one of the matching surfaces of the roller and the guide rail is provided with a V-shaped protrusion, and the other is provided with a V-shaped groove, and the guide rail and the roller are guided and rolled together by the V-shaped protrusion and the V-shaped groove.

[0016] The beneficial effects of the utility model are as follows: the utility model is an improved invention. In the process of the moving seat moving up and down, the roller moves up and down along the lifting column, so that the moving seat can be lifted up and down relative to the lifting column, meeting the use requirements. Compared with the linear bearing and ball slider solutions in the prior art, the roller bearing is easy to seal, and the roller has a larger diameter, and the rolling friction resistance is small. At the same time, general dust will not affect the roller from passing. Therefore, the utility model reduces the resistance when the moving seat moves up and down, making the moving seat move up and down more smoothly.

[0017] In order to achieve the above-mentioned purpose, the technical solution of the platform safety device provided by the utility model is:

[0018] A platform safety device comprises a fixed column and a lifting column, wherein the lifting column comprises a lifting column body and a movable seat for mounting a protective member, wherein the movable seat moves up and down along the lifting column body, wherein at least two rollers are arranged on the movable seat, and the movable seat is in rolling cooperation with the lifting column body through the rollers; wherein a guide rail is arranged on the lifting column body, wherein the opposite rail surfaces of the same guide rail form a guide surface, and the rollers are arranged at intervals on the left and right sides and respectively cooperate with the left and right sides of the same guide rail in a guiding rolling manner;

[0019] Alternatively, the lifting column body is provided with two guide rails arranged in parallel on the left and right sides, and the opposite rail surfaces of the two guide rails form a guide surface, and the rollers are arranged at intervals on the left and right sides and respectively cooperate with the opposite side of different guide rails in a guiding rolling manner;

[0020] Alternatively, two guide rails arranged in parallel on the lifting column body are provided, and the opposite rail surfaces of the two guide rails form guide surfaces. The rollers are arranged at intervals on the left and right and respectively cooperate with the opposite side guide rolling of different guide rails.

[0021] As a further improvement, in the case where the opposite rail surfaces of the same guide rail form the guide surface, the guide rail includes at least two rails arranged in parallel on the left and right sides.

[0022] As a further improvement, among the rollers on the left and right sides that cooperate with the same guide rail, the number of rollers on at least one side is more than two, and they are staggered and arranged in correspondence with the rollers on the other side.

[0023] As a further improvement, in the case of two guide rails with opposite or reverse rail surfaces, the guide rail is arranged on one side of the front and rear sides of the lifting column body.

[0024] As a further improvement, one of the matching surfaces of the roller and the guide rail is provided with a V-shaped protrusion, and the other is provided with a V-shaped groove, and the guide rail and the roller are guided and rolled together by the V-shaped protrusion and the V-shaped groove.

[0025] The beneficial effects of the utility model are as follows: the utility model is an improved invention. In the process of the moving seat moving up and down, the roller moves up and down along the lifting column, so that the moving seat can be lifted up and down relative to the lifting column, meeting the use requirements. Compared with the linear bearing and ball slider solutions in the prior art, the roller bearing is easy to seal, and the roller has a larger diameter, and the rolling friction resistance is small. At the same time, general dust will not affect the roller from passing. Therefore, the utility model reduces the resistance when the moving seat moves up and down, making the moving seat move up and down more smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a structural front view of the lifting column embodiment 1 of the utility model;

[0027] Figure 2 It is a partial enlarged view of the matching position between the moving seat and the lifting column body of the lifting column embodiment 1 of the utility model;

[0028] Figure 3 It is a cross-sectional view of the lifting column embodiment 1 of the utility model at the matching position of the moving seat and the lifting column body;

[0029] Figure 4 This is a schematic diagram of one kind of matching relationship between the roller and the guide rail in the lifting column embodiment 1 of the utility model;

[0030] Figure 5 This is a schematic diagram of another matching relationship between the roller and the guide rail in the lifting column embodiment 1 of the utility model;

[0031] Figure 6This is a schematic diagram of another matching relationship between the roller and the guide rail in the lifting column embodiment 1 of the utility model;

[0032] Figure 7 This is a schematic diagram of another arrangement of the guide rails in the lifting column embodiment 1 of the utility model;

[0033] Figure 8 It is a schematic structural diagram of the cooperation between the roller and the lifting column in Embodiment 2 of the lifting column of the utility model.

[0034] Description of reference numerals:

[0035] 1. Lifting column body; 101. Guide rail; 2. Moving seat; 201. Roller; 202. Mounting seat; 203. Stopper; 3. Protective member; 4. Fixed block; 5. Connecting frame; 6. Linkage chain; 7. Linkage wheel; 8. Flexible connector; 9. Connecting buckle. DETAILED DESCRIPTION

[0036] In view of the problems existing in the prior art, the basic technical concept of the utility model is to change the moving seat to a rolling cooperation mode between the roller and the lifting column body. The roller is installed on the moving seat, and the moving seat moves up and down along the lifting column body to meet the normal lifting needs of the moving seat. Compared with ball sliders and linear bearings, the rolling bearings used in the rollers are easy to seal, the friction resistance of rolling friction is small, and general dust will not hinder the normal passage of the rollers, thereby reducing the resistance of the moving seat when moving up and down, making the moving seat move up and down more smoothly.

[0037] The present invention is further described in detail below in conjunction with the embodiments.

[0038] Specific embodiment 1 of the lifting column of the platform safety device provided by the utility model:

[0039] In order to clearly explain the present invention, the direction of lifting and lowering of the movable seat is first defined as the up and down direction ( Figure 1 The direction of installing the protective member 3 is the left-right direction ( Figure 1 left and right directions in the image).

[0040] This embodiment provides a lifting column for a platform safety device. When in use, the lifting column is installed on a fixed column (not shown in the figure) of the platform safety device, and can be lifted up and down relative to the fixed column under the action of a lifting drive device (not shown in the figure). Figure 1As shown, the lifting column includes a lifting column body 1, and the lifting column body 1 can be connected to a lifting drive device arranged on a fixed column. A structure for installing a protective member 3 is provided on the lifting column body 1, and the protective member 3 can specifically be a pull rope, an isolation rope, a protective belt, etc. Specifically, the structure for installing the protective member 3 includes a plurality of movable seats 2 arranged up and down and an upper fixed block 4, and the movable seat 2 can specifically be a block structure or a bracket structure. A connecting frame 5 is provided on the movable seat 2, and the protective member 3 can be connected to the connecting frame 5. Between the fixed block 4 and the movable seat 2, two adjacent movable seats 2 are connected by a flexible connector 8, and the flexible connector 8 can be a pull rope, a chain, a belt, etc. In the isolated state, the flexible connector 8 plays a role in determining the distance between two adjacent movable seats 2. Figure 1 The figure shows an isolated state, where each moving seat is spread out in an up-and-down arrangement, and the protective member 3 is also spread out in an up-and-down arrangement, closing the passage for passengers to get on and off the vehicle. A linkage mechanism is provided between the moving seat 2 at the bottom and the lifting column body 1. Specifically, the linkage mechanism may be a chain transmission mechanism, such as linkage wheels 7 provided at the upper and lower ends of the lifting column body 1 and a linkage chain 6 wound around the linkage wheel 7. The linkage chain 6 may be an annular chain. The moving seat 2 at the bottom is connected to the linkage chain 6, which may be specifically intercepted by a connecting buckle 9, and a part of the linkage chain 6 is fixed relative to the fixed column during use. When the lifting column body 1 rises, the linkage wheel 7 rotates, which may drive the linkage chain 6 to move, and then drive the moving seat 2 at the bottom to move up synchronously, and push each moving seat 2 above to move in turn, thereby opening the passage for passengers to get on and off the vehicle. Specifically, the lifting drive device may be consistent with the prior art and will not be described in detail.

[0041] The following mainly introduces the guiding matching method between the moving base 2 and the lifting column body 1 in detail.

[0042] The lifting column body 1 provided in this embodiment is provided with a guide rail 101 for guiding and rolling with the moving seat 2, and the moving seat 2 is provided with a roller 201 that moves up and down along the guide rail 101. The rail surface of the guide rail 101 is equivalent to a guide surface (both guiding and rolling). Figure 2-Figure 7 , introduces several ways to set up rollers and guide rails.

[0043] In order to guide the moving seat 2, the guide rail 101 can be set on one side (front and back direction) of the lifting column body 1, and at least two rollers 201 should be set, and at least two rollers are arranged at intervals on the left and right. The rollers on the left and right sides can respectively roll along the left and right sides of the same guide rail 101. Figure 2-Figure 4As shown, rollers 201 are correspondingly arranged on the left and right sides of each guide rail 101, so that the rollers 201 can clamp each guide rail 101. The guide rails in this embodiment include two guide rails arranged on the left and right sides, which has better stability compared with the solution of only one guide rail. Of course, if space permits, the number of guide rails can be more than three.

[0044] On the basis that rollers 201 are arranged on both the left and right sides of each guide rail, the number of rollers 201 on one side may be more than two, such as Figure 4 As shown, the rollers on the other side are staggered and arranged up and down correspondingly, so that a longer span support section can be formed, and the support effect is better.

[0045] like Figure 5 As shown, on the basis of two guide rails 101, rollers 201 spaced apart on the left and right can be guided and rolled along the opposite sides of the two guide rails 101, thereby forming a wheel clamping rail effect and having better stability.

[0046] like Figure 6 As shown, on the basis of two guide rails 101, the rollers 201 spaced apart on the left and right can also be guided and rolled along the opposite sides of the two guide rails 101, thereby forming a wheel-supporting rail effect and providing better stability.

[0047] like Figure 5 and Figure 6 In the two modes shown, the rollers 201 should include two rollers 201 arranged on the left and the right. Of course, if space permits, the number of rollers 201 on each side can be more than two.

[0048] Of course, only one guide rail 101 may be provided. In this case, at least two rollers 201 spaced apart from each other are also required. The two rollers 201 respectively guide and roll along the inner side and the outer side of the guide rail 201 .

[0049] In other embodiments, the guide rails 101 may also be installed on the left and right sides of the lifting column body 1. Figure 7 As shown, the size of the moving seat 2 can be appropriately increased, and protrusions are provided at the left and right ends of the moving seat 2, and the rollers 201 are installed on the protrusions at the left and right ends of the moving seat 2 to achieve the guide rolling cooperation between the rollers 201 and the guide rails 101. However, compared with the solution of providing the guide rail on one side, this requires the moving seat 2 to have a larger size, and the overall width of the lifting device in the left and right directions is also larger.

[0050] This embodiment is also equipped with a mounting seat 202, such as Figure 2 and Figure 3As shown, during production and assembly, the axle, bearing and other structures of the roller can be first installed on the mounting seat 202, and then installed on the moving seat 2 as a whole, which is more efficient. In addition, positioning holes that are mutually positioned and matched can also be set between the mounting seat 202 and the moving seat 2, which is also convenient for ensuring the installation accuracy of the roller. Of course, in other embodiments, the roller can also be directly rolled and installed on the moving seat 2.

[0051] In addition, regarding the guide matching form of the guide rail and the roller, in order to enhance the stability of the moving seat in the front-to-back direction (perpendicular to the up-down and left-to-right directions, which also corresponds to the direction in which passengers get on and off the train), the present embodiment is as follows: Figure 3 As shown, the outer peripheral surface of the roller 201 is provided with a V-shaped groove, and the matching surface of the guide rail 101 that matches the roller 201 is provided with a V-shaped protrusion. The V-shaped protrusion and the V-shaped groove cooperate, firstly, they can support and guide each other in the front-to-back direction, improve the force stability in the front-to-back direction, and are suitable for use in areas with strong winds such as the northwest region of my country. At the same time, it can also improve the matching accuracy between the guide rail and the roller. Of course, in other embodiments, the positions of the V-shaped groove and the V-shaped protrusion can be interchanged, that is, the V-shaped protrusion is set on the roller, and the V-shaped groove is set on the guide rail, which can achieve the same effect. Of course, in other embodiments, the groove that plays a guiding role can also adopt other forms such as a U-shaped groove. It should be noted that the V-shaped or U-shaped emphasized here refers to the shape of the cross section.

[0052] In other embodiments, the mating surface of the guide rail 101 for rolling cooperation with the roller 201 can be a plane. In this case, in order to meet the guide limit in the front and rear directions, a limit stop bar can be installed on the lifting column body or the guide rail. Under the guiding action of the stop bar, the roller can be stably lifted up and down.

[0053] In other embodiments, a U-shaped groove may be provided on the lifting column body 1, and the roller may be guided and moved along the U-shaped groove. In this case, only one roller may be provided, and guide structures may be provided on the inner wall surfaces of the groove side walls on the left and right sides of the U-shaped groove, which is equivalent to a guided rolling cooperation between the roller and the inner wall surface of the U-shaped groove.

[0054] Compared with the prior art, the utility model adopts the form of a roller. When used on a platform, general dust will not affect the movement of the roller. The bearings used by the roller are also easy to seal. Moreover, the roller has rolling friction when moving, and the friction force is small. In summary, the utility model reduces the resistance when the moving seat moves up and down, and can make the moving seat move up and down more smoothly.

[0055] Specific embodiment 2 of the lifting column of the platform safety device in the utility model:

[0056] The purpose of this embodiment is to provide a lifting column body 1 of a frame-type structure. The frame-type structure referred to here should have a cavity extending up and down inside to accommodate the roller 201 and guide its movement, such as a hollow box or a frame. Figure 8 As shown, grooves are provided on the left and right sides of the lifting column body 1 to meet the requirements of installing the protective part on the moving seat 2. At this time, the movement mode and movement process of the moving seat 2 are consistent with those of Example 1 and the prior art, and will not be described again. The roller 201 provided on the moving seat 2 is provided inside the lifting column body 1, and the roller 201 rolls along the inner wall surface of the lifting column body 1. Specifically, during implementation, a roller 201 with a rim can be selected, and a protrusion that cooperates with the rim can be provided on the inner wall. At this time, the roller 201 and the inner wall guide rolling cooperate. Of course, a baffle that can limit the front and rear position of the roller 201 can also be installed on the inner wall. Under the action of the baffle, the roller 201 can roll stably up and down along the inner wall.

[0057] Specific embodiments of the platform safety device in the utility model:

[0058] The platform safety device comprises a fixed column and a lifting column. The lifting column is the lifting column described in the embodiment of the lifting column of the platform safety device, and will not be described in detail here.

[0059] Finally, it should be noted that the above is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments without creative work, or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A lifting column of a platform safety device, comprising a lifting column body and a moving seat for mounting a protective member, wherein the moving seat moves up and down along the lifting column body, characterized in that: At least two rollers are provided on the moving seat, and the rollers and the lifting column body are rollingly matched; the lifting column body is provided with a guide rail, and the opposite rail surfaces of the same guide rail form a guide surface, and the rollers are arranged at intervals on the left and right and respectively roll with the left and right sides of the same guide rail; Alternatively, the lifting column body is provided with two guide rails arranged in parallel on the left and right sides, and the opposite rail surfaces of the two guide rails form a guide surface, and the rollers are arranged at intervals on the left and right sides and respectively cooperate with the opposite side of different guide rails in a guiding rolling manner; Alternatively, two guide rails arranged in parallel on the lifting column body are provided, and the opposite rail surfaces of the two guide rails form guide surfaces. The rollers are arranged at intervals on the left and right and respectively cooperate with the opposite side guide rolling of different guide rails.

2. The lifting column of the platform safety device according to claim 1, characterized in that: In the case where the opposite rail surfaces of the same guide rail form the guide surface, the guide rail includes at least two rails that are arranged in parallel on the left and right sides.

3. The lifting column of the platform safety device according to claim 2, characterized in that: Among the rollers on the left and right sides matched with the same guide rail, the number of rollers on at least one side is more than two, and they are arranged staggered with the rollers on the other side in correspondence with each other.

4. The lifting column of the platform safety device according to claim 1, characterized in that: In the case of two guide rails with opposite or reverse rail surfaces, the guide rail is arranged on one side of the front and rear sides of the lifting column body.

5. The lifting column of the platform safety device according to any one of claims 1 to 4, characterized in that: One of the matching surfaces of the roller and the guide rail is provided with a V-shaped protrusion, and the other is provided with a V-shaped groove. The guide rail and the roller are guided to roll in matching through the V-shaped protrusion and the V-shaped groove.

6. A platform safety device, comprising a fixed column and a lifting column, comprising a lifting column body and a moving seat for mounting a protective member, wherein the moving seat moves up and down along the lifting column body, characterized in that: At least two rollers are provided on the moving seat, and the rollers and the lifting column body are in rolling cooperation; A guide rail is provided on the lifting column body, and the opposite rail surfaces of the same guide rail form a guide surface. The rollers are arranged at intervals on the left and right sides and the rollers are respectively rollingly matched with the left and right sides of the same guide rail. Alternatively, the lifting column body is provided with two guide rails arranged in parallel on the left and right sides, and the opposite rail surfaces of the two guide rails form a guide surface, and the rollers are arranged at intervals on the left and right sides and respectively cooperate with the opposite side of different guide rails in a guiding rolling manner; Alternatively, two guide rails arranged in parallel on the lifting column body are provided, and the opposite rail surfaces of the two guide rails form guide surfaces. The rollers are arranged at intervals on the left and right and are respectively used for guiding and rolling cooperation with the opposite sides of different guide rails.

7. The platform safety device according to claim 6, characterized in that: In the case where the opposite rail surfaces of the same guide rail form the guide surface, the guide rail includes at least two rails that are arranged in parallel on the left and right sides.

8. The platform safety device according to claim 7, characterized in that: Among the rollers on the left and right sides matched with the same guide rail, the number of rollers on at least one side is more than two, and they are arranged staggered with the rollers on the other side in correspondence with each other.

9. The platform safety device according to claim 6, characterized in that: In the case of two guide rails with opposite or reverse rail surfaces, the guide rail is arranged on one side of the front and rear sides of the lifting column body.

10. The platform safety device according to any one of claims 6 to 9, characterized in that: One of the matching surfaces of the roller and the guide rail is provided with a V-shaped protrusion, and the other is provided with a V-shaped groove. The guide rail and the roller are guided to roll in matching through the V-shaped protrusion and the V-shaped groove.

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