Adjustable height limiting frame for municipal road

Abstract

The utility model discloses an adjustable height limiting frame for municipal roads, and relates to the field of height limiting frames, the adjustable height limiting frame comprises two vertical grooves which are vertically and fixedly connected to the ground through expansion bolts, the sides, close to each other, of the two vertical columns are provided with the vertical grooves, and the inner walls of the vertical grooves are connected with the height limiting frames in an up-down sliding mode; connecting covers are integrally formed at the top of the periphery of the stand column, a hollow fixing shaft is welded between the two connecting covers, the connecting covers and the hollow fixing shaft are of hollow structures, and inner cavities of the connecting covers communicate with an inner cavity of the hollow fixing shaft; the two ends of the height limiting frame are connected with the lifting mechanism, and the lifting mechanism is connected with the anti-reverse driving mechanism. The anti-reverse driving mechanism is arranged to be matched with the two lifting mechanisms, so that force can be synchronously applied to the two ends of the height limiting frame, deformation caused by uneven stress of the two ends of the height limiting frame is avoided, and compared with two driving mechanisms in the prior art, the cost of one driving mechanism is lower.

Description

Technical Field

[0001] The utility model relates to the field of height-limiting frames, in particular to an adjustable height-limiting frame for a municipal road. Background Art

[0002] Adjustable height limit racks are divided into two types: manual height limit racks and electric height limit racks; manual height limit racks can be manually lifted when needed through a manual device; electric height limit racks are further divided into electric height limit racks, electric hydraulic height limit racks, pneumatic height limit racks, etc.

[0003] In the prior art, when the height limit frame is adjusted, both ends thereof must be equipped with corresponding driving mechanisms, otherwise the two ends will deform due to uneven force, causing the height limit frame to deform and affecting its service life. Summary of the invention

[0004] The purpose of the utility model is to provide an adjustable height limit frame for a municipal road in order to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: an adjustable height limit frame for a municipal road, comprising two vertical columns 1 fixedly connected to the ground by expansion bolts, a vertical groove is provided on one side of the two columns close to each other, and the inner wall of the vertical groove is slidably connected to the height limit frame;

[0006] A connection cover is integrally formed on the top of the outer periphery of the column, a hollow fixed shaft is welded between the two connection covers, the connection cover and the hollow fixed shaft are both hollow structures, and the inner cavity of the connection cover is connected to the inner cavity of the hollow fixed shaft;

[0007] Both ends of the height-limiting frame are connected to a lifting mechanism, and the lifting mechanism is connected to an anti-reverse driving mechanism;

[0008] The anti-reverse driving mechanism in the running state is used to drive the lifting mechanism to rotate, and the lifting mechanism in the rotating state is used to drive the height limiting frame to move up and down on the inner wall of the vertical groove.

[0009] As a further solution of the utility model: the anti-reverse driving mechanism includes a forward and reverse motor installed at one end of the outer wall of the connection cover, and the output end shaft of the forward and reverse motor passes through the inner cavity of the connection cover;

[0010] The inner walls of the two connection covers are both rotatably mounted with worms, the outer circumferences of the two worms are both meshed with worm wheels, and the ends of the two worms that are close to each other are connected through a synchronous shaft.

[0011] As a further solution of the utility model: the synchronous shaft is located in the inner cavity of the hollow fixed shaft, and the inner wall of the hollow fixed shaft and the outer wall of the synchronous shaft are equipped with a plurality of bearings, and the bearings are equidistantly distributed.

[0012] As a further solution of the utility model: the lifting mechanism includes a stud which is interference-fitted at the center hole of the worm gear, the stud extends downward, a support plate is fixedly mounted on the inner wall of the column, and the stud is rotatably connected to the support plate;

[0013] The outer circumferences of the two studs are both threadedly connected with moving blocks, and the two ends of the height limiting frame are respectively fixedly connected to the two moving blocks.

[0014] As a further solution of the utility model: a protective cover for protecting the forward and reverse motor is installed at one end of the outer wall of the connecting cover, and a wire hole is opened on the protective cover for the forward and reverse motor wires to extend to the outside, and a sealing ring is provided on the inner wall of the wire hole to improve the sealing performance.

[0015] As a further solution of the utility model: a hollow ring is formed on the upper half of the outer circumference of the column, and the top and bottom ends of the inner wall of the hollow ring are movably connected with balls;

[0016] The worm wheel is located in the inner cavity of the hollow ring, and the upper and lower end surfaces of the worm wheel are in contact with the ball.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. By setting up an anti-reverse driving mechanism in conjunction with two lifting mechanisms, it is possible to synchronously apply force to both ends of the height limit frame, thereby avoiding deformation caused by uneven force on both ends of the height limit frame. Compared with the two driving mechanisms in the prior art, one driving mechanism has lower cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the connection cover of the utility model;

[0021] Figure 3 For the utility model Figure 2 A partial enlarged view of the middle part;

[0022] Figure 4 This is a schematic diagram of the installation of the lifting mechanism of the utility model;

[0023] Figure 5 For the utility model Figure 4 A partial enlarged view of point B in the middle;

[0024] Figure 6 It is a schematic diagram of the rotational connection between the ball and the worm gear of the utility model.

[0025] In the figure: 1. column; 2. vertical slot; 3. connecting cover; 4. hollow fixed shaft; 5. protective cover; 6. height limit frame; 7. synchronous shaft; 8. forward and reverse motor; 9. worm; 10. worm wheel; 11. stud; 12. moving block; 13. support plate. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1 to Figure 6 In an embodiment of the utility model, an adjustable height limit frame for a municipal road includes two vertical columns 1 fixedly connected to the ground by expansion bolts, a vertical slot 2 is opened on the side where the two columns 1 are close to each other, and the inner wall of the vertical slot 2 is slidably connected to the limited height frame 6 up and down; a connecting cover 3 is integrally formed on the top of the outer periphery of the column 1, and a hollow fixed shaft 4 is welded between the two connecting covers 3, the connecting cover 3 and the hollow fixed shaft 4 are both hollow structures, and the inner cavity of the connecting cover 3 is connected to the inner cavity of the hollow fixed shaft 4; both ends of the height limit frame 6 are connected to the lifting mechanism, and the lifting mechanism is connected to the anti-reverse driving mechanism; the anti-reverse driving mechanism in the running state is used to drive the lifting mechanism to rotate, and the lifting mechanism in the rotating state is used to drive the height limit frame 6 to move up and down on the inner wall of the vertical slot 2.

[0028] In this embodiment: when it is necessary to adjust the height of the height limit frame 6, the anti-reverse driving mechanism is started, and the anti-reverse driving mechanism drives the lifting mechanism to operate. The operating lifting mechanism can drive the height limit frame 6 to move along the up and down directions of the vertical slot 2 to complete the height adjustment of the height limit frame 6, so as to avoid the situation where special vehicles are trapped by the height limit frame 6 when carrying special equipment. It should be noted that: when the height limit frame 6 moves to the lowest position, the height from the ground is 4.2 meters.

[0029] Please refer to Figure 2 , Figure 3 The anti-reverse driving mechanism includes a forward and reverse motor 8 installed on one end of the outer wall of a connecting cover 3, and the output end shaft of the forward and reverse motor 8 passes through the inner cavity of a connecting cover 3; a worm 9 is rotatably installed on the inner walls of the two connecting covers 3, and a worm wheel 10 is meshed on the outer periphery of the two worms 9, and the ends of the two worms 9 close to each other are connected by a synchronization shaft 7.

[0030] In this embodiment: by starting the forward and reverse motor 8, the forward and reverse motor 8 drives the worm 9 to rotate, and the rotating worm 9 drives the worm wheel 10 to rotate. When the worm wheel 10 rotates, the lifting mechanism can be driven to rotate;

[0031] Therefore, the height adjustment of the height limiting frame 6 can be achieved.

[0032] Please refer to Figure 3 and Figure 4 The synchronous shaft 7 is located in the inner cavity of the hollow fixed shaft 4, and the inner wall of the hollow fixed shaft 4 and the outer wall of the synchronous shaft 7 are equipped with multiple bearings, and the bearings are equidistantly distributed.

[0033] In this embodiment: when one worm 9 rotates, the worm 9 drives the other worm 9 to rotate synchronously through the synchronization shaft 7, so that the two worms 9 can run synchronously;

[0034] The hollow fixed shaft 4 is used to protect the synchronous shaft 7, and the multiple bearings can maintain the stability of the synchronous shaft 7 during rotation.

[0035] Please refer to Figure 4 and Figure 5 The lifting mechanism includes a stud 11 which is interference fitted in the center hole of the worm gear 10. The stud 11 extends downward. A support plate 13 is fixedly installed on the inner wall of the column 1. The stud 11 is rotatably connected to the support plate 13. The outer circumferences of the two studs 11 are threadedly connected with moving blocks 12, and the two ends of the height limiting frame 6 are fixedly connected to the two moving blocks 12 respectively.

[0036] In this embodiment, when the two worm gears 10 rotate, they respectively drive the studs 11 to rotate. At this time, the moving blocks 12 move up and down along the outer wall of the studs 11 under the action of their internal threads. The two moving blocks 12 drive the height limit frame 6 to rise and fall during the up and down movement.

[0037] Please refer to Figure 1 and Figure 3 A protective cover 5 for protecting the forward and reverse motor 8 is installed at one end of the outer wall of a connecting cover 3. The protective cover 5 is provided with a wire hole for the wires of the forward and reverse motor 8 to extend to the outside, and a sealing ring is provided on the inner wall of the wire hole to improve the sealing performance.

[0038] In this embodiment, the operation and driving of the forward and reverse motor 8 is realized by providing electric energy through the wire, the wire hole is used for the wire to pass through and connect to an external power source, and the sealing ring can prevent rainwater and dust from entering the protective cover 5 through the wire hole.

[0039] Please refer to Figure 6 A hollow ring is formed on the upper half of the outer circumference of the column 1, and balls are movably connected to the top and bottom of the inner wall of the hollow ring; the worm wheel 10 is located in the inner cavity of the hollow ring, and the upper and lower end surfaces of the worm wheel 10 are in contact with the balls.

[0040] In this embodiment, annular grooves are formed at the positions where the upper and lower end surfaces of the worm wheel 10 meet the balls. During the rotation of the worm wheel 10 , the balls can effectively reduce the friction of the worm wheel 10 .

[0041] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An adjustable height limit frame for a municipal road, comprising two vertical columns (1) fixedly connected to the ground by expansion bolts, characterized in that: A vertical groove (2) is provided on one side of the two uprights (1) close to each other, and the inner wall of the vertical groove (2) is slidably connected to the limited overhead frame (6) up and down; A connecting cover (3) is integrally formed on the top of the outer periphery of the column (1), a hollow fixed shaft (4) is welded between the two connecting covers (3), the connecting cover (3) and the hollow fixed shaft (4) both have a hollow structure, and the inner cavity of the connecting cover (3) is connected to the inner cavity of the hollow fixed shaft (4); Both ends of the height-limiting frame (6) are connected to a lifting mechanism, and the lifting mechanism is connected to an anti-reverse driving mechanism; The anti-reverse driving mechanism in the operating state is used to drive the lifting mechanism to rotate, and the lifting mechanism in the rotating state is used to drive the height limiting frame (6) to move up and down on the inner wall of the vertical groove (2).

2. The adjustable height limit frame for municipal roads according to claim 1, characterized in that: The anti-reverse driving mechanism comprises a forward and reverse motor (8) mounted on one end of the outer wall of one of the connection covers (3), and the output end shaft of the forward and reverse motor (8) penetrates into the inner cavity of one of the connection covers (3); A worm (9) is rotatably mounted on the inner walls of the two connection covers (3), a worm wheel (10) is meshed on the outer periphery of the two worms (9), and the ends of the two worms (9) that are close to each other are connected via a synchronization shaft (7).

3. The adjustable height limit frame for municipal roads according to claim 2 is characterized in that: The synchronous shaft (7) is located in the inner cavity of the hollow fixed shaft (4), and the inner wall of the hollow fixed shaft (4) and the outer wall of the synchronous shaft (7) are equipped with a plurality of bearings, and the bearings are equidistantly distributed.

4. The adjustable height limit frame for municipal roads according to claim 3 is characterized in that: The lifting mechanism comprises a stud (11) which is interference-fitted at the center hole of the worm wheel (10), the stud (11) extending downward, a support plate (13) being fixedly mounted on the inner wall of the column (1), and the stud (11) being rotatably connected to the support plate (13); The outer circumferences of the two studs (11) are both threadedly connected to moving blocks (12), and the two ends of the height limiting frame (6) are respectively fixedly connected to the two moving blocks (12).

5. The adjustable height limit frame for municipal roads according to claim 2, characterized in that: A protective cover (5) for protecting the forward and reverse motor (8) is installed at one end of the outer wall of the connection cover (3); a wire hole is provided on the protective cover (5) for allowing the wires of the forward and reverse motor (8) to extend to the outside, and a sealing ring is provided on the inner wall of the wire hole to improve the sealing performance.

6. The adjustable height limit frame for municipal roads according to claim 5, characterized in that: A hollow ring is formed on the upper half of the outer circumference of the column (1), and balls are movably connected to the top and bottom ends of the inner wall of the hollow ring; The worm wheel (10) is located in the inner cavity of the hollow ring, and the upper and lower end surfaces of the worm wheel (10) are in contact with the ball bearings.

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