Reversing limiting mechanism

Abstract

The utility model provides a reversing limiting mechanism, which belongs to the technical field of carriage cleaning equipment, and comprises a first mounting part, a second mounting part, a third mounting part and an elastic reset part, the third mounting part can overcome the acting force of the elastic reset part under the action of external force to rotate leftwards or rightwards relative to the second mounting part, and the elastic reset part can rotate leftwards or rightwards relative to the second mounting part. And the second mounting part can be driven to rotate upwards or downwards relative to the first mounting part under the action of external force. When the third mounting part is subjected to external force, the external force needs to overcome the acting force of the elastic reset part, the third mounting part rotates leftwards or rightwards, and when the external force reaches a certain degree, the second mounting part can be pushed to rotate upwards or downwards relative to the first mounting part; therefore, the reversing limiting mechanism can be used for achieving reversing switching of the negative pressure material suction pipe, avoiding is achieved based on rotation of the second installation part and the third installation part, and interference is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of carriage cleaning equipment, and in particular relates to a reversing limit mechanism used for reversing and switching a negative pressure suction pipe in the carriage cleaning equipment. Background Art

[0002] The carriage cleaning equipment is a device for cleaning train carriages. The carriage cleaning equipment includes movable tracks laid on both sides of the train carriage, a gantry erected on the movable tracks, and a cleaning assembly lifted and lowered on the gantry. The cleaning assembly is provided with cleaning brushes on both sides, and a negative pressure suction pipe that can be adjusted to move back and forth is provided along the width direction of the carriage. When working, the gantry moves along the movable track, cleans the inner wall of the carriage by the cleaning brush, and at the same time, the residual material is sucked out through the negative pressure suction pipe. In order to ensure that the negative pressure suction pipe can suck out the materials at the side of the carriage, in the related prior art, the negative pressure suction pipe is rotatably installed on a moving seat. The negative pressure suction pipe has two states on the moving seat: tilted to the left and tilted to the right. At the same time, push plates are set at both ends of the moving stroke of the negative pressure suction pipe. When the moving seat moves to the end of the stroke, the push plate abuts against the negative pressure suction pipe and pushes the negative pressure suction pipe to change direction, so as to keep the pipe mouth of the negative pressure suction pipe facing forward in the direction of movement, which is beneficial to improve the suction and cleaning effect of the negative pressure suction pipe on the side of the carriage. In the above structure, the position of the push plate can only be fixed at the end of the stroke of the negative pressure suction pipe. If it is set in the middle position, it will interfere and collide with the negative pressure suction pipe. Utility Model Content

[0003] The utility model aims to solve at least one of the above technical problems existing in the prior art. To this end, the utility model provides a reversing limit mechanism, which can be used to achieve the reversing switching of the negative pressure suction pipe and avoid the problem of interference.

[0004] The reversing limit mechanism according to the embodiment of the utility model comprises:

[0005] a first mounting portion;

[0006] a second mounting portion, the second mounting portion being rotatably connected to the first mounting portion about a horizontal axis;

[0007] a third mounting portion, the third mounting portion being rotatably connected to the second mounting portion about a vertical axis;

[0008] an elastic reset portion, the elastic reset portion being arranged between the second mounting portion and the third mounting portion;

[0009] Wherein, the third mounting portion can overcome the force of the elastic reset portion under the action of an external force and rotate leftward or rightward relative to the second mounting portion, and can drive the second mounting portion to rotate upward or downward relative to the first mounting portion under the action of an external force.

[0010] According to the reversing limit mechanism of the embodiment of the utility model, at least the following beneficial effects are achieved: in the reversing limit mechanism of the utility model, the second mounting part can be flipped up and down relative to the first mounting part, and the third mounting part can be flipped left and right relative to the second mounting part. When the third mounting part is subjected to an external force, the external force needs to overcome the force of the elastic reset part, and the third mounting part will rotate to the left or right, and when the external force reaches a certain level, the second mounting part can be pushed to rotate upward or downward relative to the first mounting part, thereby providing a certain degree of resistance and achieving avoidance. When applied to the carriage cleaning equipment, the reversing limit mechanism can be installed at any position within the moving adjustment range of the negative pressure suction pipe, and a reversing force can be applied to the negative pressure suction pipe, while avoiding interference based on the rotation of the second mounting part and the third mounting part. Therefore, the reversing limit mechanism in the utility model can be used to achieve the reversing switching of the negative pressure suction pipe and avoid interference problems.

[0011] According to some embodiments of the present invention, the third mounting portion is provided with an abutting portion at an end away from the second mounting portion.

[0012] According to some embodiments of the present invention, the abutting portion is rotatably connected to the third mounting portion, and a rotation center of the abutting portion is perpendicular to a rotation center of the second mounting portion and a rotation center of the third mounting portion.

[0013] According to some embodiments of the present invention, the abutment portion is configured as a rigid collision wheel.

[0014] According to some embodiments of the utility model, a rotating block is provided on the left or right side of the third mounting portion, and the rotating block is used to abut the second mounting portion under the action of the elastic reset portion and limit the abutting portion at an end away from the second mounting portion.

[0015] According to some embodiments of the present invention, the first mounting portion is provided with a first limiting plate, which is located at the lower end of the rotation range of the second mounting portion and is used to limit the second mounting portion in a horizontal position when abutting against the second mounting portion.

[0016] According to some embodiments of the present invention, the first mounting portion is further provided with a second limit plate, which is located at the upper end of the rotation range of the second mounting portion and is used to limit the upward rotation angle of the second mounting portion to less than 90°.

[0017] According to some embodiments of the utility model, the first mounting portion is also provided with a third limiting plate and a fourth limiting plate, the third limiting plate and the fourth limiting plate are connected between the first limiting plate and the second limiting plate at intervals, and the second mounting portion is rotatably connected between the third limiting plate and the fourth limiting plate.

[0018] According to some embodiments of the present invention, the elastic reset portion is a torsion spring.

[0019] According to some embodiments of the utility model, two first mounting plates are arranged at intervals on the second mounting portion, two second mounting plates are arranged at intervals on the third mounting portion, the two second mounting plates are rotatably connected to the opposite ends of the two first mounting plates, and the elastic reset portion is arranged between the two second mounting plates.

[0020] Additional aspects and advantages of the present invention will be partially given in the following description, and some of the additional aspects and advantages will become apparent from the following description, or will be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 A schematic diagram of a state in which the second mounting portion is flipped upward;

[0024] Figure 3 A schematic diagram of a state in which the third mounting portion is flipped to the left;

[0025] Figure 4 The utility model is a schematic diagram of a vehicle compartment cleaning device.

[0026] In the figure:

[0027] 100-first mounting portion, 101-first limiting plate, 102-second limiting plate, 103-third limiting plate, 104-fourth limiting plate;

[0028] 200-second mounting portion, 201-first mounting plate;

[0029] 300-third mounting portion, 301-second mounting plate, 302-rotating block;

[0030] 400-butt part

[0031] 500-Elastic reset portion. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0033] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] In the description of the present utility model, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0035] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0036] In the description of the utility model, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0037] The carriage cleaning equipment is a device for cleaning train carriages. The carriage cleaning equipment includes movable tracks laid on both sides of the train carriage, a gantry erected on the movable tracks, and a cleaning assembly lifted and lowered on the gantry. The cleaning assembly is provided with cleaning brushes on both sides, and a negative pressure suction pipe that can be adjusted to move back and forth is provided along the width direction of the carriage. When working, the gantry moves along the movable track, cleans the inner wall of the carriage by the cleaning brush, and at the same time, the residual material is sucked out through the negative pressure suction pipe. In order to ensure that the negative pressure suction pipe can suck out the materials at the side of the carriage, in the related prior art, the negative pressure suction pipe is rotatably installed on a moving seat. The negative pressure suction pipe has two states on the moving seat: tilted to the left and tilted to the right. At the same time, push plates are set at both ends of the moving stroke of the negative pressure suction pipe. When the moving seat moves to the end of the stroke, the push plate abuts against the negative pressure suction pipe and pushes the negative pressure suction pipe to change direction, so as to keep the pipe mouth of the negative pressure suction pipe facing forward in the direction of movement, which is beneficial to improve the suction and cleaning effect of the negative pressure suction pipe on the side of the carriage. In the above structure, the position of the push plate can only be fixed at the end of the stroke of the negative pressure suction pipe. If it is set in the middle position, it will interfere and collide with the negative pressure suction pipe.

[0038] The utility model provides a direction-reversing limiting mechanism, which can be used to realize the direction-reversing switching of a negative pressure material suction pipe and avoid the problem of interference.

[0039] Reference Figure 1 A reversing limit mechanism of an embodiment of the utility model includes a first mounting portion 100, a second mounting portion 200, a third mounting portion 300 and an elastic reset portion 500. The first mounting portion 100 is used to be connected and fixed to an application subject. For example, when applied to a carriage cleaning device, the first mounting portion 100 is connected and installed on the carriage cleaning device. The second mounting portion 200 can be rotatably mounted on the first mounting portion 100 around a horizontal axis, so that it can rotate up and down relative to the first mounting portion 100. The third mounting portion 300 can be rotatably mounted on the second mounting portion 200 around a vertical axis, so that it can rotate left and right relative to the second mounting portion 200. The elastic reset portion 500 is arranged between the second mounting portion 200 and the third mounting portion 300, and is used to limit the third mounting portion 300 to a relatively stable position state. The third mounting portion 300 can overcome the force of the elastic reset portion 500 under the action of external force and rotate leftward or rightward relative to the second mounting portion 200, and can drive the second mounting portion 200 to rotate upward or downward relative to the first mounting portion 100 under the action of external force.

[0040] It can be understood that the reversing limit mechanism in the present invention can be used to turn the second mounting part 200 up and down relative to the first mounting part 100, and the third mounting part 300 can be turned left and right relative to the second mounting part 200. When the third mounting part 300 is subjected to external force, the external force needs to overcome the force of the elastic reset part 500, and the third mounting part 300 will rotate to the left or right, and when the external force reaches a certain level, it can push the second mounting part 200 to rotate upward or downward relative to the first mounting part 100, thereby providing a certain degree of resistance and achieving avoidance. When applied to the carriage cleaning equipment, the reversing limit mechanism can be installed at any position within the moving adjustment range of the negative pressure suction pipe, and a reversing force can be applied to the negative pressure suction pipe. At the same time, avoidance is achieved based on the rotation of the second mounting part 200 and the third mounting part 300 to avoid interference. Therefore, the reversing limit mechanism in the present invention can be used to achieve the reversing switching of the negative pressure suction pipe and avoid interference.

[0041] It is also understandable that when the third mounting portion 300 is in contact with and separated from the negative pressure suction pipe, the negative pressure suction pipe will be subjected to vibration, which can peel off the logistics vibration on the inner wall of the negative pressure suction pipe to a certain extent.

[0042] Reference Figure 1 In some embodiments of the present invention, the third mounting portion 300 is provided with an abutting portion 400 protruding from one end away from the second mounting portion 200, so as to abut against the negative pressure suction pipe through the abutting portion 400. By providing the abutting portion 400, the present embodiment can not only utilize the lever principle to improve the smoothness of rotation of the third mounting portion 300 when being pushed, but also facilitate abutting against the negative pressure suction pipe, thereby realizing the switching effect of the negative pressure suction pipe.

[0043] Reference Figure 1 In some embodiments of the utility model, the abutment portion 400 is rotatably mounted on the third mounting portion 300, and the rotation center of the abutment portion 400 is perpendicular to the rotation center of the second mounting portion 200 and the rotation center of the third mounting portion 300. When applied to the carriage cleaning device, since the negative pressure suction pipe is horizontally reciprocating, when contacting the abutment portion 400, it contacts the abutment portion 400 along the direction of the rotation center of the second mounting portion 200. In this embodiment, the abutment portion 400 is rotatably mounted on the third mounting portion 300, and rolling contact can be achieved when in contact, thereby improving the service life and the rotation smoothness of each component when the reversing limit mechanism avoids. It can be understood that the rotation center of the abutment portion 400 is perpendicular to the rotation center of the second mounting portion 200 and the third mounting portion 300, which means that they are perpendicular to each other when no external force is applied. When the third mounting portion 300 rotates to the left or right, the vertical relationship between the rotation center of the abutment portion 400 and the rotation center of the second mounting portion 200 will be broken.

[0044] In some embodiments of the present invention, the abutment portion 400 is configured as a rigid collision wheel. Specifically, the rigid collision wheel is mounted on the third mounting portion 300 via a bearing.

[0045] Reference Figures 1 to 3 In some embodiments of the present invention, a rotating block 302 is provided on the left or right side of the third mounting portion 300. The rotating block 302 is used to abut against the second mounting portion 200 under the action of the elastic reset portion 500, and limit the abutting portion 400 to an end away from the second mounting portion 200. Figure 1 As shown, the abutting portion 400 is located at the front end of the third mounting portion 300, and when the abutting portion 400 is in a state of extending forward, it is convenient to dock with the negative pressure suction pipe. Therefore, when the rotating block 302 abuts the second mounting portion 200, the abutting portion 400 is limited to a state of being away from the second mounting portion 200 and extending forward. It can be understood that under the limiting action of the rotating block 302, the third mounting portion 300 can only rotate to the left or right. For example, when the rotating block 302 is located on the left side of the third mounting portion 300 and abuts the second mounting portion 200, the third mounting portion 300 cannot rotate to the left in the state of the abutting portion 400 extending forward, and can only rotate to the right, otherwise it can only rotate to the left. It can also be understood that the elastic reset portion 500 can be set corresponding to the rotating block 302 to keep the rotating block 302 abutting the second mounting portion 200 under normal conditions, thereby keeping the abutting portion 400 in a state of extending forward.

[0046] Reference Figure 1 In some embodiments of the present invention, the first mounting portion 100 is provided with a first limiting plate 101, which is located at the lower end of the rotation range of the second mounting portion 200 and is used to limit the second mounting portion 200 in a horizontal position when abutting against the second mounting portion 200. Figure 1 and Figure 2 As shown, the second mounting portion 200 is normally supported on the first limiting plate 101 and is kept horizontal by the first limiting plate 101. Therefore, the second mounting portion 200 can only rotate upward when subjected to external force, and is reset by falling back due to gravity.

[0047] Reference Figure 1 and Figure 2In some embodiments of the present invention, the first mounting portion 100 is further provided with a second limit plate 102, which is located at the upper end of the rotation stroke of the second mounting portion 200 and is used to limit the second mounting portion 200 to rotate upward at an angle less than 90°. In combination with the records of the previous embodiment, it can be seen that the second mounting portion 200 can only be turned upward. In this embodiment, the second limit plate 102 is further provided to limit the second mounting portion 200 to turn upward at an angle less than 90°, which can prevent the second mounting portion 200 from turning over too much and being unable to be reset by gravity.

[0048] It is understandable that a reset structure may be provided for the second mounting portion 200 to perform elastic reset, thereby replacing the setting of the limiting plate.

[0049] Reference Figure 1 and Figure 2 In some embodiments of the present invention, the first mounting portion 100 is further provided with a third limiting plate 103 and a fourth limiting plate 104, the third limiting plate 103 and the fourth limiting plate 104 are spaced and connected between the first limiting plate 101 and the second limiting plate 102, and the second mounting portion 200 is rotatably connected between the third limiting plate 103 and the fourth limiting plate 104. Figure 1 As shown, the first limiting plate 101 is arranged horizontally, and the second limiting plate 102 is arranged obliquely at the rear end of the first limiting plate 101, and is arranged at an angle to the first limiting plate 101. The third limiting plate 103 and the fourth limiting plate 104 are spaced apart from each other and vertically arranged between the first limiting plate 101 and the second limiting plate 102. The first limiting plate 101, the second limiting plate 102, the third limiting plate 103 and the fourth limiting plate 104 are enclosed together to form an installation cavity. The rear end of the second installation part 200 is connected to the third limiting plate 103 and the fourth limiting plate 104 by a rotating shaft and is installed in the installation cavity. The first installation part 100 of this embodiment has a simple structure and high stability, and can be installed using the first limiting plate 101 or the second limiting plate 102, and is applicable to many scenarios.

[0050] In some embodiments of the present invention, the elastic reset portion 500 is configured as a torsion spring.

[0051] Reference Figure 1 In some embodiments of the utility model, the second mounting portion 200 is provided with two first mounting plates 201 at upper and lower intervals, the third mounting portion 300 is provided with two second mounting plates 301 at upper and lower intervals, the two second mounting plates 301 are rotatably connected to the opposite ends of the two first mounting plates 201, and the torsion spring is installed between the two second mounting plates 301.

[0052] When the reversing limit mechanism in the utility model is applied to a carriage cleaning device, a working mechanism is as follows:

[0053] Reference Figure 4 , the mouth of the negative pressure suction pipe is tilted to the left, and the abutment portion 400 is located on the travel path of the negative pressure suction pipe. Figure 1 and Figure 3 , the third mounting portion 300 cannot rotate rightward under the action of the rotating block 302. When the negative pressure suction pipe moves to the left and contacts the abutting portion 400, the force of the torsion spring will be overcome, driving the third mounting portion 300 to rotate leftward and give way. At this time, the angle of the negative pressure suction pipe still keeps the pipe mouth tilted to the left. After the negative pressure suction pipe reaches the end of the stroke to the left, it moves to the right and contacts the abutting portion 400. The abutting portion 400 cannot rotate rightward, which will exert a greater force on the negative pressure suction pipe. As the negative pressure suction pipe continues to move to the right, the abutting portion 400 pushes the negative pressure suction pipe to change direction until the pipe mouth tilts to the right. At this time, the area where the negative pressure suction pipe contacts the abutting portion 400 can exert an upward force on the abutting portion 400, driving the second mounting portion 200 to flip upward relative to the first mounting portion 100. Figure 2 As shown, the negative pressure suction pipe successfully passes over the reversing limit mechanism, and then under the action of gravity, the second mounting part 200 is reset.

[0054] The embodiments of the utility model are described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the utility model. In addition, the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

Claims

1. A reversing limit mechanism, characterized in that: include: a first mounting portion; a second mounting portion, the second mounting portion being rotatably connected to the first mounting portion about a horizontal axis; a third mounting portion, the third mounting portion being rotatably connected to the second mounting portion about a vertical axis; an elastic reset portion, the elastic reset portion being arranged between the second mounting portion and the third mounting portion; Wherein, the third mounting portion can overcome the force of the elastic reset portion under the action of an external force and rotate leftward or rightward relative to the second mounting portion, and can drive the second mounting portion to rotate upward or downward relative to the first mounting portion under the action of an external force.

2. The direction-changing limiting mechanism according to claim 1, characterized in that: The third mounting portion is provided with an abutting portion at one end away from the second mounting portion.

3. The direction-changing limiting mechanism according to claim 2, characterized in that: The abutting portion is rotatably connected to the third mounting portion, and a rotation center of the abutting portion is perpendicular to a rotation center of the second mounting portion and a rotation center of the third mounting portion.

4. The direction-changing limiting mechanism according to claim 2, characterized in that: The abutment portion is configured as a rigid collision wheel.

5. The direction-changing limiting mechanism according to claim 2, characterized in that: A rotating block is arranged on the left or right side of the third mounting portion, and the rotating block is used to abut against the second mounting portion under the action of the elastic reset portion, and limit the abutting portion at an end away from the second mounting portion.

6. The direction-changing limiting mechanism according to claim 1, characterized in that: The first mounting portion is provided with a first limiting plate, which is located at the lower end of the rotation stroke of the second mounting portion and is used to limit the second mounting portion in a horizontal position when abutting against the second mounting portion.

7. The direction-changing limiting mechanism according to claim 6, characterized in that: The first mounting portion is further provided with a second limit plate, which is located at the upper end of the rotation range of the second mounting portion and is used to limit the upward rotation angle of the second mounting portion to be less than 90°.

8. The direction-changing limiting mechanism according to claim 7, characterized in that: The first mounting portion is further provided with a third limiting plate and a fourth limiting plate, the third limiting plate and the fourth limiting plate are connected between the first limiting plate and the second limiting plate at intervals, and the second mounting portion is rotatably connected between the third limiting plate and the fourth limiting plate.

9. The direction-changing limiting mechanism according to claim 1, characterized in that: The elastic restoring portion is a torsion spring.

10. The direction-changing limiting mechanism according to claim 1, characterized in that: The second mounting portion is provided with two first mounting plates at intervals, the third mounting portion is provided with two second mounting plates at intervals, the two second mounting plates are rotatably connected to the opposite ends of the two first mounting plates, and the elastic reset portion is provided between the two second mounting plates.

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