Brake arm stroke monitoring device, brake and escalator or moving sidewalk

Abstract

The utility model relates to a brake arm stroke monitoring device, a brake and an escalator or a moving sidewalk, the brake arm stroke monitoring device comprises a first mounting frame, a second mounting frame, a monitoring part and a pre-pressing part, and the first mounting frame is used for being connected with one of a brake drum mounting seat and a brake arm; the second mounting frame is used for being connected with the other one of the brake drum mounting seat and the brake arm, and the second mounting frame is provided with an abutting surface; the monitoring part is arranged on the first mounting frame and provided with a pressing part, the pressing part is arranged towards the abutting surface and can reciprocate in the first direction of the monitoring part, and the abutting surface is used for abutting against the pressing part; the pre-pressing piece is movably arranged on the second mounting frame, can enter and exit from the position between the abutting face and the pressing part and is used for pressing the pressing part. The stroke clearance between the pressing part and the monitoring part is eliminated through the pre-pressing part, so that the monitoring precision of the monitoring part is improved, and the monitoring accuracy of the braking state of the brake is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of escalators, and particularly relates to a brake arm stroke monitoring device, a brake and an escalator or moving walkway. BACKGROUND

[0002] The braking of an escalator is mainly realized by a brake, and a brake arm of the brake embraces a brake drum and provides a brake torque to achieve the purpose of stopping the escalator. In order to identify whether the escalator is in a braking state, a stroke switch is usually arranged on a mounting seat of the brake drum, and the brake arm rotates to press a contact of the stroke switch. After the contact is pressed and moves, the stroke switch sends a signal to indicate that the escalator is in the braking state. However, when the contact moves, there is a stroke virtual position, and when this part of the stroke virtual position is pressed, the stroke switch does not send a signal, thereby affecting the monitoring accuracy of the stroke switch and reducing the monitoring accuracy of the braking state of the escalator. CONTENT OF THE UTILITY MODEL

[0003] Therefore, it is necessary to provide a brake arm stroke monitoring device, a brake and an escalator to solve the problem that the stroke virtual position of the stroke switch affects the monitoring accuracy of the stroke switch and reduces the monitoring accuracy of the braking state of the escalator.

[0004] The technical scheme is as follows:

[0005] One embodiment provides a brake arm stroke monitoring device, which comprises:

[0006] A first mounting frame is arranged to be connected with one of a brake drum mounting seat and a brake arm;

[0007] A second mounting frame is arranged to be connected with the other one of the brake drum mounting seat and the brake arm, and the second mounting frame has an abutting surface;

[0008] A monitoring member is arranged on the first mounting frame and has a pressing portion, the pressing portion is arranged towards the abutting surface and can reciprocate along a first direction of the monitoring member, and the abutting surface is arranged to abut against the pressing portion; and

[0009] A pre-pressing member is movably arranged on the second mounting frame, the pre-pressing member can move in and out of the abutting surface and the pressing portion, and the pre-pressing member is arranged to press the pressing portion.

[0010] The brake arm stroke monitoring device disclosed above first abuts the pressing portion of the monitoring member against the abutting surface, and then moves the pre-pressing member between the abutting surface and the pressing portion. Due to the presence of the pre-pressing member, the pressing portion moves away from the abutting surface and moves a distance towards the monitoring member, thereby eliminating the stroke virtual position between the pressing portion and the monitoring member. In this way, when the brake is braking, the brake arm moves and gradually approaches the brake drum mounting seat to make the first mounting bracket and the second mounting bracket approach each other, the pre-pressing member presses the pressing portion, and the pressing portion moves towards the monitoring member. In this process, since there is no stroke virtual position between the pressing portion and the monitoring member, the monitoring member can more accurately monitor whether the brake is braking. Compared with the traditional technology, the brake arm stroke monitoring device disclosed above eliminates the stroke virtual position between the pressing portion and the monitoring member by the pre-pressing member, thereby improving the monitoring accuracy of the monitoring member and ensuring the monitoring accuracy of the braking state of the brake.

[0011] In one of the embodiments, the brake arm stroke monitoring device further comprises an assembly assembly, the pre-pressing member is provided with a first assembly through hole, and the assembly assembly is arranged on the second mounting bracket and passes through the first assembly through hole.

[0012] In one of the embodiments, the assembly assembly comprises a first bolt and a first nut, the second mounting bracket is provided with a second assembly through hole, the first bolt passes through the first assembly through hole and the second assembly through hole in sequence and is screwed with the first nut; or,

[0013] The assembly assembly comprises a first bolt and a first nut, the second mounting bracket is provided with a second assembly through hole, the first bolt passes through the second assembly through hole and the first assembly through hole in sequence and is screwed with the first nut.

[0014] In one of the embodiments, the brake arm stroke monitoring device further comprises a positioning assembly, the pre-pressing member is provided with a positioning groove, and the positioning assembly is arranged on the abutting surface and is used for positioning cooperation with the positioning groove.

[0015] In one of the embodiments, the positioning assembly comprises a second bolt and a second nut, the second mounting bracket is provided with a third assembly through hole, the second bolt passes through the third assembly through hole and is screwed with the second nut, and the rod portion of the second bolt is used for positioning cooperation with the positioning groove to press the pre-pressing member between the head portion of the second bolt and the second mounting bracket; or,

[0016] The positioning assembly comprises a second bolt and a second nut, the second mounting bracket is provided with a third assembly through hole, the second bolt passes through the third assembly through hole and is screwed with the second nut, and the rod portion of the second bolt is used for positioning cooperation with the positioning groove to press the pre-pressing member between the second nut and the second mounting bracket.

[0017] In one of the embodiments, the pre-pressing member has opposite first and second ends, the first assembly through hole is arranged near the first end, and the pre-pressing member is provided with a handle arranged near the second end.

[0018] In one of the embodiments, the second mounting frame is provided with a strip-shaped hole extending in the first direction, one of the brake drum mounting seat and the brake arm connected with the second mounting frame is provided with a screw hole, and the brake arm stroke monitoring device further comprises a third bolt arranged through the strip-shaped hole and screwed with the screw hole.

[0019] In one of the embodiments, the strip-shaped hole is provided with at least two, all the strip-shaped holes are arranged in a second direction of the second mounting frame, the second direction is perpendicular to the first direction, and the screw hole and the third bolt are each provided with at least two and arranged in one-to-one correspondence with the strip-shaped holes.

[0020] Another embodiment provides a brake comprising the brake arm stroke monitoring device as described above.

[0021] Still another embodiment provides an escalator or moving walk comprising the brake as described above. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0023] Figure 1 It is a schematic view of the pre-pressing member not located between the abutting surface and the pressing portion in an embodiment of the present application.

[0024] Figure 2 It is a schematic view of the pre-pressing member located between the abutting surface and the pressing portion in an embodiment of the present application.

[0025] Figure 3 It is a front view of the brake arm stroke monitoring device in an embodiment of the present application.

[0026] Figure 4 It is a schematic view of the positioning assembly not positioned and matched with the positioning groove in an embodiment of the present application.

[0027] Figure 5 It is a schematic view of the positioning assembly positioned and matched with the positioning groove in an embodiment of the present application.

[0028] BRIEF DESCRIPTION OF DRAWINGS

[0029] 10, brake drum mounting seat; 20, brake arm; 100, first mounting frame; 200, second mounting frame; 210, abutting surface; 220, strip-shaped hole; 300, monitoring member; 310, pressing part; 320, mounting groove; 400, pre-pressing member; 410, positioning groove; 421, first end; 422, second end; 430, handle; 500, assembly component; 510, first bolt; 520, first nut; 530, first washer; 600, positioning component; 610, second bolt; 620, second nut; 630, second washer; 700, third bolt. DETAILED DESCRIPTION

[0030] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways beyond the specific embodiments described and it is therefore contemplated to cover all such modifications as fall within the scope of the application. It is to be understood that the application is not limited in its application to the details set forth in the description below.

[0031] In the description of the present application, it should be understood that, if there are terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0032] In addition, if the terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implying the number of technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "multiple" appears, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0033] In the present application, unless specifically defined otherwise, if there is an appearance of the terms "installation", "connection", "connection", "fixation" and the like, these terms should be broadly understood. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically defined. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] In the present application, unless specifically defined otherwise, if there is an appearance of the terms "installation", "connection", "connection", "fixation" and the like, these terms should be broadly understood. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically defined. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] It should be noted that if an element is referred to as "fixed to" or "disposed to" another element, it can be directly on another element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are for illustrative purposes only and do not represent the only implementation.

[0036] Please refer to Figures 1 to 5 One embodiment of the present application provides a brake arm stroke monitoring device, comprising a first mounting frame 100, a second mounting frame 200, a monitoring member 300, and a pre-pressing member 400. The first mounting frame 100 is used to connect with one of a brake drum mounting seat 10 and a brake arm 20. The second mounting frame 200 is used to connect with the other of the brake drum mounting seat 10 and the brake arm 20, and the second mounting frame 200 has an abutting surface 210. The monitoring member 300 is arranged on the first mounting frame 100 and is provided with a pressing portion 310. The pressing portion 310 is arranged towards the abutting surface 210 and can reciprocate along a first direction of the monitoring member 300. The abutting surface 210 is used to abut with the pressing portion 310. The pre-pressing member 400 is movably arranged on the second mounting frame 200. The pre-pressing member 400 can enter and exit between the abutting surface 210 and the pressing portion 310. The pre-pressing member 400 is used to press the pressing portion 310.

[0037] The brake arm stroke monitoring device described above first abuts the pressing portion 310 of the monitoring member 300 against the abutting surface 210, and then moves the pre-pressing member 400 between the abutting surface 210 and the pressing portion 310. Due to the presence of the pre-pressing member 400, the pressing portion 310 moves away from the abutting surface 210 and moves a distance towards the monitoring member 300, thereby eliminating the stroke virtual position between the pressing portion 310 and the monitoring member 300. In this way, when the brake is braking, the brake arm 20 moves and gradually approaches the brake drum mounting seat 10 so that the first mounting bracket 100 and the second mounting bracket 200 approach each other, the pre-pressing member 400 presses the pressing portion 310, and the pressing portion 310 moves towards the monitoring member 300. In this process, since there is no stroke virtual position between the pressing portion 310 and the monitoring member 300, the monitoring member 300 can more accurately monitor whether the brake is braking. Compared with the traditional technology, the brake arm stroke monitoring device described above eliminates the stroke virtual position between the pressing portion 310 and the monitoring member 300 by the pre-pressing member 400, thereby improving the monitoring accuracy of the monitoring member 300 and ensuring the monitoring accuracy of the braking state of the brake.

[0038] Further, the first direction of the monitoring member 300 is the length direction of the monitoring member, and the second mounting bracket 200 is arranged in the first direction of the monitoring member 300.

[0039] As an explanation, the monitoring member 300 is provided with a mounting groove 320, and the pressing portion 310 is arranged in the mounting groove 320 and can reciprocate in the depth direction of the mounting groove 320. When the pressing portion 310 moves below the set depth of the mounting groove 320, the monitoring member 300 will be triggered and send a signal to indicate that the brake is in a braking state. Therefore, the set depth is also called the triggering depth. The part of the stroke of the pressing portion 310 above the triggering depth of the mounting groove 320 is called the stroke virtual position. When the pressing portion 310 moves in the stroke virtual position, the monitoring member 300 will not be triggered. When the monitoring member 300 is applied to the brake, in order to more accurately monitor whether the brake is in a braking state, it is necessary to eliminate this part of the stroke virtual position. In this application, the pre-pressing member 400 is used to eliminate the stroke virtual position between the pressing portion 310 and the monitoring member 300, thereby improving the monitoring accuracy of the monitoring member 300 and ensuring the monitoring accuracy of the braking state of the brake.

[0040] Further, the installation groove 320 is provided with an elastic member, and the pressing portion 310 is connected with the elastic member. When the brake arm stroke monitoring device is installed, the brake arm 20 and the brake drum mounting seat 10 are kept in an open state (i.e. the state when the brake does not brake the escalator), the distance between the first mounting frame 100 and the second mounting frame 200 is adjusted, so that the installation portion of the monitoring member 300 on the first mounting frame 100 can abut against the abutment surface 210 of the second mounting frame 200. At this time, the abutment surface 210 only abuts against the pressing portion 310 and does not press the pressing portion 310, so the elastic member does not produce elastic deformation. Then, the pre-pressing member 400 is moved to between the abutment surface 210 and the pressing portion 310. At this time, the pressing portion 310 moves away from the abutment surface 210 and moves a distance in the depth direction of the installation groove 320, which is just the distance that makes the pressing portion 310 at the trigger depth (at this time, the pressing portion 310 does not move below the trigger depth, so the monitoring member 300 does not send a signal), thereby eliminating this part of the stroke virtual position. At this time, the elastic member produces elastic deformation.

[0041] In one embodiment, the first mounting frame 100 is arranged on the brake drum mounting seat 10, so that the monitoring member 300 is connected with the brake drum mounting seat 10 through the first mounting frame 100, and the second mounting frame 200 is arranged on the brake arm 20, so that the pre-pressing member 400 is connected with the brake arm 20 through the second mounting frame 200. When the brake operates, the brake arm 20 as a dynamic part can move close to or away from the brake drum mounting seat 10 as a static part. Since the internal structure of the monitoring member 300 is relatively complex, the monitoring member 300 is arranged on the brake drum mounting seat 10 to prevent the internal structure of the monitoring member 300 from being damaged due to the swing of the brake arm 20.

[0042] In one embodiment, the monitoring member 300 includes a travel switch, and the travel switch is provided with a contact as the pressing portion 310. When the contact is pressed, the travel switch sends a signal.

[0043] In one embodiment, the pre-pressing member 400 includes a pre-pressing plate, which is movably arranged on the second mounting frame 200, and one side of the pre-pressing plate is used to press the pressing portion 310. When the pre-pressing plate is used to press the pressing portion 310, the area of the pre-pressing plate is large, which can reduce the accuracy requirement of the installation position of the pre-pressing plate, thereby reducing the cost.

[0044] Further, the pre-pressing plate is detachably arranged on the second mounting frame 200, so as to realize the replacement of pre-pressing plates with different thicknesses. In this way, the pre-pressing plates with different thicknesses can be replaced according to the size of the stroke virtual position between the pressing portion 310 and the monitoring member 300, thereby further improving the monitoring accuracy of the monitoring member 300.

[0045] For example, when the stroke virtual position between the pressing part 310 and the monitoring part 300 is large, a thicker pre-pressing plate is used; when the stroke virtual position between the pressing part 310 and the monitoring part 300 is small, a thinner pre-pressing plate is used.

[0046] In other embodiments, the number of pre-pressing plates can also be increased or decreased to match the stroke virtual position between the pressing part 310 and the monitoring part 300.

[0047] For example, when the stroke virtual position between the pressing part 310 and the monitoring part 300 is large, the number of pre-pressing plates stacked on each other is increased to achieve the thickness of the stack; when the stroke virtual position between the pressing part 310 and the monitoring part 300 is small, the number of pre-pressing plates stacked on each other is decreased to reduce the thickness.

[0048] Please refer to Figures 1 to 5 In one embodiment, the brake arm stroke monitoring device further comprises an assembly component 500, the pre-pressing part 400 is provided with a first assembly through hole, and the assembly component 500 is arranged on the second mounting bracket 200 and passes through the first assembly through hole.

[0049] In this way, the pre-pressing part 400 can rotate around the center of the hole of the first assembly through hole to enter and exit between the abutting surface 210 and the pressing part 310, which is simple and low in implementation cost.

[0050] Further, the first assembly through hole is eccentrically arranged on the pre-pressing plate, and the assembly component 500 is arranged at a position close to the edge of the abutting surface 210, so that the pre-pressing plate rotates to enter and exit between the abutting surface 210 and the pressing part 310.

[0051] Optionally, the assembly component 500 can be a rotating shaft, a bolt or other component that can pass through the first assembly through hole and realize the rotation of the pre-pressing part 400, which is not limited here.

[0052] Please refer to Figures 4 to 5 In one embodiment, the assembly component 500 comprises a first bolt 510 and a first nut 520, the second mounting bracket 200 is provided with a second assembly through hole, and the first bolt 510 passes through the first assembly through hole and the second assembly through hole in sequence and is screwed with the first nut 520.

[0053] As an alternative embodiment to the above embodiment, the assembly component 500 comprises a first bolt 510 and a first nut 520, the second mounting bracket 200 is provided with a second assembly through hole, and the first bolt 510 passes through the second assembly through hole and the first assembly through hole in sequence and is screwed with the first nut 520.

[0054] In this way, the pre-pressing piece 400 can not only rotate around the axis of the first bolt 510, but also be fixed in position by screwing between the first bolt 510 and the first nut 520 when the pre-pressing piece 400 rotates to the abutting surface 210 and the pressing part 310, so as to prevent the pre-pressing piece 400 from deviating from the abutting surface 210 and the pressing part 310 and affecting the monitoring accuracy.

[0055] Further, the assembly component 500 further comprises a first washer 530, and the first nut 520 is arranged through the first washer 530, so that the first washer 530 is clamped between the first nut 520 and the pre-pressing piece 400, to prevent the first nut 520 from damaging the pre-pressing piece 400 due to excessive compression.

[0056] Please refer to Figures 4 to 5 In an embodiment, the brake arm stroke monitoring device further comprises a positioning assembly 600, the pre-pressing piece 400 is provided with a positioning groove 410, and the positioning assembly 600 is arranged on the abutting surface 210 and used for positioning cooperation with the positioning groove 410.

[0057] When the pre-pressing piece 400 enters between the abutting surface 210 and the pressing part 310 to press the pressing part 310, the positioning groove 410 on the pre-pressing piece 400 can be positioned and cooperated with the positioning assembly 600 on the abutting surface 210, so that the pre-pressing piece 400 can be stably arranged between the abutting surface 210 and the pressing part 310, and reliably press the pressing part 310.

[0058] Further, the positioning groove 410 is arranged at the edge of the pre-pressing piece 400 and is opened towards the positioning assembly 600, and when the pre-pressing piece 400 rotates around the hole center of the first assembly through hole as the center, the positioning assembly 600 can enter the positioning groove 410, so as to realize the positioning cooperation.

[0059] Optionally, the positioning assembly 600 can be a positioning protrusion, a positioning column, etc., which is not limited here.

[0060] Please refer to Figures 4 to 5 In an embodiment, the positioning assembly 600 comprises a second bolt 610 and a second nut 620, the second mounting frame 200 is provided with a third assembly through hole, the second bolt 610 is arranged through the third assembly through hole and is screwed with the second nut 620, and the rod part of the second bolt 610 is used for positioning cooperation with the positioning groove 410, so as to press the pre-pressing piece 400 between the head part of the second bolt 610 and the second mounting frame 200.

[0061] The second bolt 610 can be arranged in the third assembly through hole of the second mounting frame 200 and screwed with the second nut 620, the shank of the second bolt 610 can not only be positioned and matched with the positioning groove 410, but also be screwed with the second nut 620, so that the pre-pressing piece 400 is pressed between the head of the second bolt 610 and the second mounting frame 200, and the pre-pressing piece 400 is prevented from moving during pressing the pressing part 310.

[0062] Further, the worker can adjust the clamping degree of the second bolt 610 on the pre-pressing piece 400 by rotating the second nut 620, when the pre-pressing piece 400 needs to be moved out of the space between the abutting surface 210 and the pressing part 310, the second nut 620 is loosened to facilitate moving the pre-pressing piece 400.

[0063] As an alternative embodiment of the above embodiment, the positioning assembly 600 comprises a second bolt 610 and a second nut 620, the second mounting frame 200 is provided with a third assembly through hole, the second bolt 610 is arranged in the third assembly through hole and screwed with the second nut 620, the shank of the second bolt 610 is used for positioning and matching with the positioning groove 410 to press the pre-pressing piece 400 between the second nut 620 and the second mounting frame 200.

[0064] Similarly, the above embodiment will not be described here.

[0065] Further, the positioning assembly 600 further comprises a second washer 630, the second nut 620 is arranged in the second washer 630, and the second washer 630 is clamped between the second nut 620 and the pre-pressing piece 400 or the head of the second bolt 610 and the pre-pressing piece 400, so as to prevent the pre-pressing piece 400 from being damaged due to excessive compression.

[0066] Please refer to Figures 1 to 5 In one embodiment, the pre-pressing piece 400 has opposite first and second ends 421 and 422, the first assembly through hole is arranged close to the first end 421, and the pre-pressing piece 400 is provided with a handle 430, the handle 430 is arranged close to the second end 422.

[0067] In this way, the worker can control the pre-pressing piece 400 to rotate along the center of the first assembly through hole through the handle 430, and the operation convenience is improved.

[0068] Further, please refer to Figure 3 The handle 430 protrudes from the space between the first mounting frame 100 and the second mounting frame 200, so that when the pre-pressing piece 400 is located between the abutting surface 210 and the pressing part 310, the position of the handle 430 is located outside the space between the abutting surface 210 and the pressing part 310, so as to facilitate the worker to operate.

[0069] Please refer toFigures 1 to 2 and Figures 4 to 5 In one embodiment, the second mounting bracket 200 is provided with a strip-shaped hole 220 extending in a first direction in a radial direction of the fourth mounting hole, one of the brake drum mounting seat 10 and the brake arm 20 connected with the second mounting bracket 200 is provided with a threaded hole, and the brake arm stroke monitoring device further comprises a third bolt 700 which is screwed into the strip-shaped hole 220 and the threaded hole.

[0070] When the third bolt 700 is screwed into the strip-shaped hole 220, the second mounting bracket 200 can reciprocate in the radial direction of the fourth mounting hole, so as to facilitate the worker to adjust the distance between the second mounting bracket 200 and the first mounting bracket 100; in this way, the worker can flexibly adjust the distance between the second mounting bracket 200 and the first mounting bracket 100 during the installation of the second mounting bracket 200, so that the abutting surface 210 of the second mounting bracket 200 is in contact with the pressing portion 310 of the monitoring member 300, and then the third bolt 700 is tightened to fix the second mounting bracket 200, so that the adjustment process is simple and the implementation cost is low.

[0071] Further, during the installation of the second mounting bracket 200, the worker first adjusts the position of the second mounting bracket 200 through the strip-shaped hole 220 extending in the radial direction, so that the abutting surface 210 is in contact with the pressing portion 310 of the monitoring member 300, and then the pre-pressing member 400 is moved to the position between the abutting surface 210 and the pressing portion 310, so that the stroke virtual position between the monitoring member 300 and the pressing portion 310 can be more accurately eliminated, and the operation is facilitated, and only one worker is needed to easily complete the operation.

[0072] Please refer to Figures 4 to 5 In one embodiment, the strip-shaped hole 220 is provided with at least two strip-shaped holes 220, all the strip-shaped holes 220 are arranged in a second direction of the second mounting bracket 200, the second direction is perpendicular to the first direction, and the threaded hole and the third bolt 700 are each provided with at least two threaded holes and third bolts 700 corresponding to the strip-shaped holes 220.

[0073] In this way, the installation strength of the second mounting bracket 200 can be improved, and the use reliability of the brake arm stroke monitoring device can be further improved.

[0074] Another embodiment of the present application provides a brake comprising the brake arm stroke monitoring device according to any one of the above embodiments.

[0075] The pressing portion 310 of the monitoring member 300 is first abutted against the abutment surface 210, and then the pre-pressing member 400 is moved to the position between the abutment surface 210 and the pressing portion 310. Due to the presence of the pre-pressing member 400, the pressing portion 310 moves away from the abutment surface 210 and moves a distance towards the monitoring member 300, so as to eliminate the stroke dead zone between the pressing portion 310 and the monitoring member 300. In this way, when the brake is braking, the brake arm 20 moves and gradually approaches the brake drum mounting seat 10, so that the first mounting frame 100 and the second mounting frame 200 approach each other, the pre-pressing member 400 presses the pressing portion 310, so that the pressing portion 310 moves towards the monitoring member 300. In this process, due to the absence of the stroke dead zone between the pressing portion 310 and the monitoring member 300, the monitoring member 300 can more accurately monitor whether the brake is braking. Compared with the prior art, the brake described above eliminates the stroke dead zone between the pressing portion 310 and the monitoring member 300 by the pre-pressing member 400, thereby improving the monitoring accuracy of the monitoring member 300 and ensuring the monitoring accuracy of the braking state of the brake.

[0076] Further, the brake in the above embodiment is a drum brake.

[0077] Another embodiment of the present application provides an escalator or moving sidewalk, which comprises the brake in the above embodiment.

[0078] The pressing portion 310 of the monitoring member 300 is first abutted against the abutment surface 210, and then the pre-pressing member 400 is moved to the position between the abutment surface 210 and the pressing portion 310. Due to the presence of the pre-pressing member 400, the pressing portion 310 moves away from the abutment surface 210 and moves a distance towards the monitoring member 300, so as to eliminate the stroke dead zone between the pressing portion 310 and the monitoring member 300. In this way, when the brake is braking, the brake arm 20 moves and gradually approaches the brake drum mounting seat 10, so that the first mounting frame 100 and the second mounting frame 200 approach each other, the pre-pressing member 400 presses the pressing portion 310, so that the pressing portion 310 moves towards the monitoring member 300. In this process, due to the absence of the stroke dead zone between the pressing portion 310 and the monitoring member 300, the monitoring member 300 can more accurately monitor whether the brake is braking. Compared with the prior art, the brake described above eliminates the stroke dead zone between the pressing portion 310 and the monitoring member 300 by the pre-pressing member 400, thereby improving the monitoring accuracy of the monitoring member 300 and ensuring the monitoring accuracy of the braking state of the brake.

[0079] The technical features of the above embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above embodiments are described, however, as long as the combinations of the technical features do not exist contradictions, they shall be considered as the scope of the present disclosure.

[0080] The above embodiments only express several implementation manners of the application, which are described in a more specific and detailed manner, but cannot be understood as a limitation on the patent application scope. It should be noted that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the application, which all belong to the protection scope of the application. Therefore, the protection scope of the patent application of the application should be subject to the appended claims.

Claims

1. A brake arm travel monitoring device, characterized by, The brake arm stroke monitoring device comprises: a first mounting frame for connecting with one of a brake drum mounting seat and a brake arm; a second mounting frame for connecting with the other of the brake drum mounting seat and the brake arm, the second mounting frame having an abutting surface; a monitoring member provided on the first mounting frame and having a pressing portion arranged towards the abutting surface and capable of reciprocating along a first direction of the monitoring member, the abutting surface being used for abutting with the pressing portion; and a pre-pressing member movably provided on the second mounting frame, the pre-pressing member being capable of moving in and out of between the abutting surface and the pressing portion, the pre-pressing member being used for pressing the pressing portion. The brake arm stroke monitoring device further comprises an assembly component, the pre-pressing member is provided with a first assembly through hole, and the assembly component is provided on the second mounting frame and passes through the first assembly through hole.

2. A brake arm travel monitoring device according to claim 1, characterised in that, The assembly component comprises a first bolt and a first nut, the second mounting frame is provided with a second assembly through hole, the first bolt passes through the first assembly through hole and the second assembly through hole in sequence and is screwed with the first nut; or 3. A brake arm travel monitoring device according to claim 2, characterised in that, The assembly component comprises a first bolt and a first nut, the second mounting frame is provided with a second assembly through hole, the first bolt passes through the second assembly through hole and the first assembly through hole in sequence and is screwed with the first nut. The brake arm stroke monitoring device further comprises a positioning component, the pre-pressing member is provided with a positioning groove, and the positioning component is provided on the abutting surface and used for positioning cooperation with the positioning groove.

4. The brake arm travel monitoring device of claim 2, wherein, The positioning component comprises a second bolt and a second nut, the second mounting frame is provided with a third assembly through hole, the second bolt passes through the third assembly through hole and is screwed with the second nut, a rod portion of the second bolt is used for positioning cooperation with the positioning groove, so as to press the pre-pressing member between a head portion of the second bolt and the second mounting frame; or 5. A brake arm travel monitoring device according to claim 4, characterised in that, The positioning component comprises a second bolt and a second nut, the second mounting frame is provided with a third assembly through hole, the second bolt passes through the third assembly through hole and is screwed with the second nut, a rod portion of the second bolt is used for positioning cooperation with the positioning groove, so as to press the pre-pressing member between the second nut and the second mounting frame. The pre-pressing member has opposite first and second ends, the first assembly through hole is arranged close to the first end, and the pre-pressing member is provided with a handle arranged close to the second end.

6. The brake arm travel monitoring device of claim 2, wherein, The second mounting frame is provided with a strip-shaped hole, the strip-shaped hole is arranged along a radial direction of the first direction, one of the brake drum mounting seat and the brake arm connected with the second mounting frame is provided with a threaded hole, and the brake arm stroke monitoring device further comprises a third bolt, the third bolt passes through the strip-shaped hole and is screwed with the threaded hole.

7. The brake arm travel monitoring device of claim 1, wherein, The strip-shaped hole is provided with at least two, all the strip-shaped holes are arranged at intervals along a second direction of the second mounting frame, the second direction is perpendicular to the first direction, the threaded hole and the third bolt are each provided with at least two and arranged in one-to-one correspondence with the strip-shaped holes.

8. A brake arm travel monitoring device according to claim 7, characterised in that, ​ 9. A brake characterized by The brake comprises a brake arm travel monitoring device as claimed in any of claims 1 to 8.

10. An escalator or moving walk, characterized in that The escalator or moving walk comprises a brake as claimed in claim 9.

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