Separable friction plate abrasion alarm device

Abstract

The utility model relates to the technical field of friction plate abrasion alarm devices, in particular to a separable friction plate abrasion alarm device which comprises a friction block, two installation grooves which are in bilateral symmetry are formed in the upper surface of the friction block, and a first abrasion sensor and a second abrasion sensor are arranged in the two installation grooves in a one-to-one correspondence mode. The upper surface of the second wear sensor is lower than the upper surface of the first wear sensor, and switching devices are arranged at the rear ends of the two protective sleeves. The first wear sensor and the second wear sensor are very convenient to mount and dismount, and the maintenance cost is reduced. When the alarm device is replaced, the alarm connecting line does not need to be replaced, and maintenance cost is saved. According to the alarm device, the upper surface of the second abrasion sensor is lower than the upper surface of the first abrasion sensor, so that the first abrasion sensor is abraded firstly, an early warning signal is sent to a computer end of a cab at the moment, and potential safety hazards are reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of friction plate wear alarm devices, and in particular to a detachable friction plate wear alarm device. Background Technology

[0002] The most common alarm device on drum brakes on the market consists of an alarm wiring harness and an on-board connector. The on-board connector is connected to the alarm installed in the driver's cab or the vehicle computer. The alarm wiring harness is connected to the on-board connector to form a conductive alarm circuit, and a sensor head is fixed on the alarm wiring harness and installed inside the friction block. In this way, the sensor head will wear down with the friction block. When the sensor head wears down to the point that the alarm wiring harness is broken, the alarm circuit is disconnected, causing the alarm or vehicle computer to sound an alarm to alert the driver.

[0003] For example, the authorization notice number "CN209164440" is titled "An Alarm Device for Friction Plate Wear." This alarm device for friction plate wear uses a wire that passes through a connector made of high-temperature resistant thermosetting plastic. The connector insulates against high temperatures, preventing short circuits caused by melting of the wire's outer insulation layer due to excessive heat, thus improving alarm accuracy. Furthermore, because the bent portion of the wire protrudes beyond the upper end of the connector, the connector itself is no longer worn, meaning that only the wire needs to be replaced after a single use, making replacement convenient.

[0004] Moreover, the replacement cost is low.

[0005] The above-mentioned and existing technologies have the following drawbacks: Although the alarm device only requires the wire to be replaced after one use, replacing the wire is complicated and increases maintenance costs; when replacing, the entire wire needs to be replaced, which increases maintenance costs; the alarm device does not have a preliminary alarm device, so the driver only knows that the friction block needs to be replaced when it is worn to the limit, which creates a safety hazard. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing a separable friction plate wear alarm device.

[0007] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A separable friction plate wear alarm device is designed, comprising a friction block. The upper surface of the friction block has two symmetrical mounting slots, each corresponding to a first wear sensor and a second wear sensor. The upper surface of the second wear sensor is lower than that of the first wear sensor. Two first connecting blocks are located at the rear ends of each mounting slot, and each of the first connecting blocks has a first connecting hole on its surface. Two second connecting blocks are located at the rear ends of both the first and second wear sensors, and each of the second connecting blocks has a second connecting hole on its surface. A preliminary alarm line is located inside the first wear sensor, and a limit alarm line is located inside the second wear sensor. Both ends of the preliminary alarm line extend from the first wear sensor, and both ends of the limit alarm line extend from the second wear sensor. The extended portions of the preliminary and limit alarm lines are fitted with protective sleeves. Two adapter devices are located at the rear ends of the protective sleeves, and these adapter devices are electrically connected to the preliminary and limit alarm lines respectively. An alarm connection line is located on the rear surface of each adapter device, and the adapter device is electrically connected to the alarm connection line.

[0009] Preferably, the adapter includes a first adapter block and a second adapter block. The front surface of the first adapter block is connected to the rear end of the protective sleeve, and the rear surface of the second adapter block is connected to the front end of the alarm connection line. The rear surface of the first adapter block is provided with two plugs. The two plugs near the first wear sensor are electrically connected to the preliminary alarm line, and the two plugs near the second wear sensor are electrically connected to the extreme alarm line. The front surface of the second adapter block is provided with two slots, and the two slots are electrically connected to the alarm connection line. The first adapter block and the second adapter block are engaged by a snap-fit ​​mechanism.

[0010] Preferably, the rear surface of the first adapter block is provided with two snap-fit ​​blocks, the front surface of the second adapter block is provided with a snap-fit ​​groove, the surface of the snap-fit ​​block is provided with two convex rings, the inner wall of the snap-fit ​​groove is provided with two annular grooves that match the convex rings, and the convex rings and annular grooves are snap-fit ​​engaged.

[0011] Preferably, the inner wall of the mounting groove is provided with a positioning groove, and the lower surface of the first wear sensor and the second wear sensor is provided with a positioning block. The two positioning grooves correspond one-to-one with the two positioning blocks and are matched.

[0012] Preferably, the first and second adapter blocks are fitted with elastic protective sleeves.

[0013] Preferably, the preliminary alarm line is arranged in a U-shape inside the first wear sensor, and the extreme alarm line is arranged in a U-shape inside the second wear sensor.

[0014] This utility model proposes a detachable friction plate wear alarm device, which has the following advantages: When installing the first and second wear sensors, simply pass bolts through the first and second connecting holes and then tighten them with nuts to install the first and second wear sensors onto the friction block. Disassembly is simple: just remove the bolts and nuts to remove the first and second wear sensors. This process makes the installation and removal of the first and second wear sensors very convenient, reducing maintenance costs. Because of the adapter, the alarm connection wire does not need to be replaced when replacing the alarm device, saving maintenance costs. The alarm device, with its first and second wear sensors, ensures that the first wear sensor wears down first because its upper surface is lower than the first. This triggers a warning signal to the driver's cab computer, reminding the driver to replace the friction block promptly. This prevents the driver from only realizing the need to replace the friction block when it reaches its wear limit, reducing safety hazards. When the friction block reaches its wear limit, it will wear down the second wear sensor, triggering an alarm signal to the driver's cab computer, reminding the driver to replace the friction block immediately. Attached Figure Description

[0015] Figure 1 This is a top view of the friction block structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the first wear sensor, adapter, and alarm connection line of this utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the second wear sensor, adapter, and alarm connection line of this utility model;

[0018] Figure 4 This is an enlarged view of position A of this utility model.

[0019] In the diagram: Friction block 1, Mounting slot 2, First wear sensor 3, Second wear sensor 4, First connecting block 5, First connecting hole 6, Second connecting block 7, Second connecting hole 8, Preliminary alarm line 9, Limit alarm line 10, Alarm connecting line 11, First adapter block 12, Second adapter block 13, Plug 14, Slot 15, Snap-fit ​​block 16, Snap-fit ​​groove 17, Protruding ring 18, Annular groove 19, Positioning groove 20, Positioning block 21, Elastic protective sleeve 22, Protective sleeve 23. Detailed Implementation

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Reference Figure 1-4 A separable friction plate wear alarm device includes a friction block 1. The upper surface of the friction block 1 has two symmetrical mounting grooves 2. A first wear sensor 3 and a second wear sensor 4 are mounted in each of the two mounting grooves 2. The upper surface of the second wear sensor 4 is lower than the upper surface of the first wear sensor 3. Two first connecting blocks 5 are provided at the rear ends of each of the two mounting grooves 2. Each of the two first connecting blocks 5 has a first connecting hole 6 on its surface. Two second connecting blocks 7 are provided at the rear ends of both the first wear sensor 3 and the second wear sensor 4. Multiple second connecting blocks 7 have second connecting holes 8 on their surfaces. A preliminary alarm line 9 is provided inside the first wear sensor 3, and a maximum alarm line 10 is provided inside the second wear sensor 4. Both ends of the preliminary alarm line 9 extend out of the first wear sensor 3, and both ends of the maximum alarm line 10 extend out of the second wear sensor 4. Protective sleeves 23 are fitted over the extended portions of the preliminary alarm line 9 and the maximum alarm line 10, protecting them respectively. Both protective sleeves 23 are equipped with adapters at their rear ends. The two adapters are electrically connected to the initial alarm line 9 and the extreme alarm line 10, respectively. Both adapters are equipped with alarm connection lines 11 on their rear surfaces, and the adapters are electrically connected to the alarm connection lines 11.

[0022] The adapter includes a first adapter block 12 and a second adapter block 13. The front surface of the first adapter block 12 is connected to the rear end of the protective sleeve 23, and the rear surface of the second adapter block 13 is connected to the front end of the alarm connection line 11. The rear surface of the first adapter block 12 is provided with two plugs 14. The two plugs 14 near the first wear sensor 3 are electrically connected to the preliminary alarm line 9, and the two plugs 14 near the second wear sensor 4 are electrically connected to the extreme alarm line 10. The front surface of the second adapter block 13 is provided with two slots 15, and the two slots 15 are electrically connected to the alarm connection line 11. The first adapter block 12 and the second adapter block 13 are engaged by a snap-fit.

[0023] The rear surface of the first adapter block 12 has two snap-fit ​​blocks 16, and the front surface of the second adapter block 13 has a snap-fit ​​groove 17. The surface of each snap-fit ​​block 16 has two convex rings 18 arranged in a ring shape. The inner wall of the snap-fit ​​groove 17 has two annular grooves 19 that match the convex rings 18, and the convex rings 18 and annular grooves 19 are engaged in a snap-fit ​​fit. By inserting the snap-fit ​​blocks 16 into the snap-fit ​​grooves 17 and engaging them with the convex rings 18 and annular grooves 19, the first adapter block 12 and the second adapter block 13 can be fixedly installed.

[0024] The inner wall of the mounting slot 2 is provided with positioning slots 20, and the lower surface of the first wear sensor 3 and the second wear sensor 4 is provided with positioning blocks 21. The two positioning slots 20 correspond one-to-one with the two positioning blocks 21. By placing the inner positioning slots 20 with the positioning blocks 21, the first wear sensor 3 and the second wear sensor 4 can be quickly positioned with their respective mounting slots 2.

[0025] The first adapter block 12 and the second adapter block 13 are fitted with elastic protective sleeves 23. The elastic protective sleeves 23 can be fitted onto the first adapter block 12 and the second adapter block 13 by elasticity, so as to protect the first adapter block 12 and the second adapter block 13.

[0026] The initial alarm line 9 is arranged in a U-shape inside the first wear sensor 3, and the ultimate alarm line 10 is arranged in a U-shape inside the second wear sensor 4. The U-shape arrangement ensures that the initial alarm line 9 and the second wear sensor 4 can be worn down.

[0027] Working principle: When installing the first wear sensor 3 and the second wear sensor 4, simply pass the bolts through the first connecting hole 6 and the second connecting hole 8, and then tighten them with nuts to install the first wear sensor 3 and the second wear sensor 4 onto the friction block 1; when disassembling, simply remove the bolts and nuts to remove the first wear sensor 3 and the second wear sensor 4; the above process makes the installation and disassembly of the first wear sensor 3 and the second wear sensor 4 very convenient, reducing maintenance costs. Because of the adapter, when replacing the alarm device, simply pull the first adapter block 12 to disengage the plug 14 from the slot 15 to replace either the first wear sensor 3 or the second wear sensor 4. The alarm connection wire 11 does not need to be replaced, saving maintenance costs. The alarm device, equipped with a first wear sensor 3 and a second wear sensor 4, will cause the first wear sensor 3 to wear out first, as the upper surface of the second wear sensor 4 is lower than that of the first wear sensor 3. This will trigger a warning signal to the cab computer, reminding the driver to replace the friction block 1 promptly. This prevents the driver from only realizing the need to replace the friction block 1 when it has worn to its limit, reducing safety hazards. When the friction block 1 wears to its limit, it will wear out the second wear sensor 4, triggering an alarm signal to the cab computer, reminding the driver to replace the friction block 1 immediately.

[0028] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A separable friction plate wear alarm device, comprising a friction block (1), characterized in that, The friction block (1) has two symmetrical mounting slots (2) on its upper surface. The two mounting slots (2) are respectively equipped with a first wear sensor (3) and a second wear sensor (4). The upper surface of the second wear sensor (4) is lower than the upper surface of the first wear sensor (3). The rear ends of the two mounting slots (2) are provided with two first connecting blocks (5). The surfaces of the two first connecting blocks (5) are provided with first connecting holes (6). The rear ends of the first wear sensor (3) and the second wear sensor (4) are provided with two second connecting blocks (7). The surfaces of the multiple second connecting blocks (7) are provided with second connecting holes (8). The first wear sensor (3) has a... The initial alarm line (9) is provided, and the second wear sensor (4) is provided with a limit alarm line (10). The first wear sensor (3) extends from both ends of the initial alarm line (9), and the second wear sensor (4) extends from both ends of the limit alarm line (10). The extended parts of the initial alarm line (9) and the limit alarm line (10) are all fitted with protective sleeves (23). The rear ends of the two protective sleeves (23) are provided with adapters. The two adapters are electrically connected to the initial alarm line (9) and the limit alarm line (10) in a one-to-one correspondence. The rear surfaces of the two adapters are provided with alarm connection lines (11). The adapters are electrically connected to the alarm connection lines (11).

2. The separable friction plate wear alarm device according to claim 1, characterized in that, The adapter includes a first adapter block (12) and a second adapter block (13). The front surface of the first adapter block (12) is connected to the rear end of the protective sleeve (23), and the rear surface of the second adapter block (13) is connected to the front end of the alarm connection line (11). The rear surface of the first adapter block (12) is provided with two plugs (14). The two plugs (14) near the first wear sensor (3) are electrically connected to the preliminary alarm line (9), and the two plugs (14) near the second wear sensor (4) are electrically connected to the extreme alarm line (10). The front surface of the second adapter block (13) is provided with two slots (15). The two slots (15) are electrically connected to the alarm connection line (11). The first adapter block (12) and the second adapter block (13) are in a snap-fit ​​engagement.

3. The separable friction plate wear alarm device according to claim 2, characterized in that, The rear surface of the first adapter block (12) is provided with two snap-fit ​​blocks (16), the front surface of the second adapter block (13) is provided with a snap-fit ​​groove (17), the surface of the snap-fit ​​block (16) is provided with two protruding rings (18), the inner wall of the snap-fit ​​groove (17) is provided with two annular grooves (19) that match the protruding rings (18), and the protruding rings (18) and the annular grooves (19) are snap-fitted together.

4. The separable friction plate wear alarm device according to claim 1, characterized in that, The inner wall of the mounting groove (2) is provided with positioning grooves (20), and the lower surfaces of the first wear sensor (3) and the second wear sensor (4) are provided with positioning blocks (21). The two positioning grooves (20) correspond one-to-one with the two positioning blocks (21) and match.

5. The separable friction plate wear alarm device according to claim 2, characterized in that, The first adapter block (12) and the second adapter block (13) are fitted with elastic protective sleeves (23).

6. The separable friction plate wear alarm device according to claim 1, characterized in that, The preliminary alarm line (9) is arranged in a U-shape inside the first wear sensor (3), and the extreme alarm line (10) is arranged in a U-shape inside the second wear sensor (4).

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