CN213831514U

CN213831514U - Long stroke alarm sensor for self-discharging vehicle

Info

Publication number: CN213831514U
Application number: CN202023058633.8U
Authority: CN
Inventors: 王川
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-17
Filing date: 2020-12-17
Publication date: 2021-07-30
Anticipated expiration: 2030-12-17

Abstract

The utility model discloses a long stroke alarm sensor of a dump truck, wherein an opening part above a machine body is covered with an installation support, a guide sleeve installation support is in threaded connection and passes through the installation support, a bush is embedded in an upper end hole of the guide sleeve, the lower end of a hemispherical head ejector rod enters the machine body through the bush and an inner hole of the guide sleeve, the lower end of the hemispherical head ejector rod is placed in a limiting upper hole at the upper end of a slide block, and a telescopic seal sleeve wraps the outer leakage part of the hemispherical head ejector rod; the hemispherical head ejector rod and the sliding block are positioned in a limiting slide way in the machine body, the upper end of the reset spring is placed into and propped against a limiting lower hole at the lower end of the sliding block, and the lower end of the reset spring is embedded into the bottom of the limiting slide way; a movable contact is arranged on the side surface of the sliding block; the contact surface of a positioning bracket for the sliding of the movable contact is provided with a positive pole fixed contact and a negative pole fixed contact. The utility model discloses can solve the alarm switch fragile that traditional tipper's alarm exists and lead to reporting to the police the technical problem who became invalid.

Description

Long stroke alarm sensor for self-discharging vehicle

Technical Field

The utility model belongs to the technical field of the annex improvement of tipper.

Background

At present, in order to avoid major accidents when a carriage rises, dump truck manufacturing enterprises can only use other electrical switches to solve the problem. However, in the actual use process, due to the reasons that the bottom of the carriage is too heavy due to long-term loading, heavy objects are often hit or the road surface is uneven, the carriage swings and shakes too much, and the like, the borrowed electric switch is frequently damaged, and the alarm fails. Moreover, the phenomenon that the alarm is out of work by means of an electric switch due to the fact that the working environment is severe, water is often involved, and dust on a vehicle body is cleaned under high pressure.

Disclosure of Invention

The utility model aims at providing a long stroke alarm sensor of tipper. The technical problem that an alarm switch of an alarm of a traditional dump truck is easy to damage to cause alarm failure is solved.

In order to achieve the above purpose, the technical solution adopted by the present invention is as follows:

the waterproof long-stroke alarm sensor for the dump truck comprises a machine body 1, a guide sleeve 2, mounting threads 3, a bushing 4, a telescopic sealing sleeve 5, a hemispherical head ejector rod 6, an E-shaped retainer ring 7, a limiting slide way 8, a limiting clamping groove 9, a sliding block 10, a limiting upper hole 11, a limiting lower hole 12, two rectangular holes 13, side round holes 14, a U-shaped movable contact 15, a top spring 16, a reset spring 17, a fixing table 18, a fixing support 19, a fixing groove 20, a wire clamping groove 21, a locking screw 22, a waterproof plug 23, positive and negative static contacts 24, positive and negative leads 25, a rectangular groove 26, a circular-diameter rectangular sealing ring 27, a locking column 28, a cover plate 29 and a mounting support 30.

An installation support 30 covers an opening above the machine body 1, the guide sleeve 2 is in threaded connection with the installation support 30 through an installation thread 3 arranged at the lower end and penetrates through the installation support 30, a bush 4 is inlaid in a hole at the upper end of the guide sleeve 2, the lower end of the hemispherical head ejector rod 6 enters the machine body 1 through the bush 4 and an inner hole of the guide sleeve 2, is placed in a limiting upper hole 11 at the upper end of the sliding block 10 and is clamped and fixed by an E-shaped clamping ring 7; the two ends of the telescopic sealing sleeve 5 are respectively embedded at the lower end of the hemispherical head ejector rod 6 and the top end of the guide sleeve, and the part of the hemispherical head ejector rod 6, which leaks out of the guide sleeve 2, is wrapped; the hemispherical head ejector rod 6 and the sliding block 10 are positioned in a limiting slide way 8 in the machine body 1, the upper end of a return spring 17 is placed in and abuts against a limiting lower hole 12 at the lower end of the sliding block 10, and the lower end of the return spring 17 is embedded in a limiting clamping groove 9 at the bottom of the limiting slide way 8; two rectangular holes 13 and a side round hole 14 positioned between the two rectangular holes 13 are arranged on the side surface of the sliding block 10, two corner parts of the movable contact 15 are arranged in the two rectangular holes 13, one end of a return spring 17 is arranged in the side round hole 14, and the other end of the return spring is propped against the inner side of the movable contact 15; a positioning bracket 19 is provided, the positioning bracket 19 is provided with a contact surface for the movable contact 15 to slide, and a positive pole fixed contact 24 and a negative pole fixed contact 24 are arranged on the contact surface; when the carriage rises, the semi-spherical head ejector rod 6 is released, the sliding block 10 is pushed to the upper limit position by the reset spring 17, the movable contact 15 is communicated with the positive and negative pole fixed contacts 24, and when the semi-spherical head ejector rod 6 is pressed down by the carriage, the sliding block 10 drives the movable contact 15 to move downwards, and the positive and negative pole fixed contacts 24 are disconnected.

The positive and negative leads 25 are connected with the tail ends of the positive and negative static contacts 24 and extend through the wire clamping groove 21 and penetrate out of the machine body through the waterproof plug 23 at the bottom end of the machine body 1 to be connected with an alarm on an external vehicle.

A cover plate 29 for sealing the inner cavity of the machine body is arranged on one side of the machine body, the cover plate 29 covers the rectangular groove 26, a rectangular sealing ring 27 is arranged in the groove 26, locking columns 28 are arranged at four corners of the groove 26, and the locking columns 28 are embedded into four corners of the cover plate 29 to lock the cover plate on the machine body 1.

The utility model has the advantages of as follows:

in the actual use process, the frequent damage of the alarm sensor can not be caused due to the reasons of overweight carried objects for a long time, frequent smashing by heavy objects, uneven road surface, overlarge swinging and shaking of the carriage and the like, so that the alarm is invalid. Under the conditions of severe working environment and the like, a good alarm state can still be kept.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the cover plate structure of the present invention.

Detailed Description

The specific structure of the utility model is shown in figure 1. The waterproof long-stroke alarm sensor for the dump truck comprises a machine body 1, a guide sleeve 2, mounting threads 3, a bushing 4, a telescopic sealing sleeve 5, a hemispherical head ejector rod 6, an E-shaped retainer ring 7, a limiting slide way 8, a limiting clamping groove 9, a sliding block 10, a limiting upper hole 11, a limiting lower hole 12, two rectangular holes 13, side round holes 14, a U-shaped movable contact 15, a top spring 16, a reset spring 17, a fixing table 18, a fixing support 19, a fixing groove 20, a wire clamping groove 21, a locking screw 22, a waterproof plug 23, positive and negative static contacts 24, positive and negative leads 25, a rectangular groove 26, a circular-diameter rectangular sealing ring 27, a locking column 28, a cover plate 29 and a mounting support 30.

When the device is used, the device is fastened on the mounting bracket 30 through the mounting threads 3 and fixed at a proper position on the side surface of the girder below the carriage, and the positive and negative leads 25 are respectively connected with the power line and the voice audible and visual alarm on the vehicle, so that a driver can be prompted and peripheral personnel can be warned to pay attention to safety, and major accidents are prevented.

When the carriage is not lifted, the carriage presses the upper part of the semi-spherical head mandril to push the slide block 10 to move downwards along the limiting slide way 8 to be compressed by the return spring 17, and the U-shaped movable contact 15 and the positive and negative static contacts 24 are in a disconnected state.

When the carriage starts to rise, the return spring 17 pushes the sliding block 10 and the hemispherical head ejector rod 6 to move upwards, at the moment, the U-shaped movable contact is in abutting contact with the positive and negative static contacts through the ejector spring 16, at the moment, the circuit is in a closed state, and the voice audible and visual alarm is connected. If the bottom of the carriage sinks due to long-term overweight carrying or frequent heavy object smashing, the carriage is folded for over win and is pressed downwards, the long stroke of the product pushes the sliding block 10 to compress along the downward reset spring 17 of the limiting slide way 8 along with the downward pressing of the hemispherical head ejector rod, and the internal circuit of the machine body is still kept in the original state, so that the product is protected to be intact, and the function of the product is also ensured to be accurate and reliable. The waterproof plug 23 and the round-diameter rectangular sealing ring provided with the telescopic sealing sleeve 5 can prevent dust, and can also avoid the problem of water inflow of an electric appliance caused by severe wading in a working environment and high-pressure cleaning of an automobile body, so that the reliability of the product is ensured.

Claims

1. The long-stroke alarm sensor for the dump truck is characterized in that an installing support (30) covers an opening above a machine body (1), a guide sleeve (2) is in threaded connection with the installing support (30) through an installing thread (3) arranged at the lower end and penetrates through the installing support (30), a bushing (4) is embedded in an upper end hole of the guide sleeve (2), the lower end of a hemispherical head ejector rod (6) enters the machine body (1) through the bushing (4) and an inner hole of the guide sleeve (2), is placed in an upper limiting hole (11) at the upper end of a sliding block (10), and is clamped and fixed through an E-shaped clamping ring (7); two ends of the telescopic sealing sleeve (5) are respectively embedded at the lower end of the hemispherical head ejector rod (6) and the top end of the guide sleeve, and the part of the hemispherical head ejector rod (6) which leaks out of the guide sleeve (2) is wrapped; the hemispherical head ejector rod (6) and the sliding block (10) are positioned in a limiting slide way (8) in the machine body (1), the upper end of a return spring (17) is placed in and abuts against a limiting lower hole (12) at the lower end of the sliding block (10), and the lower end of the return spring (17) is embedded in a limiting clamping groove (9) at the bottom of the limiting slide way (8); two rectangular holes (13) and a side round hole (14) positioned between the two rectangular holes (13) are arranged on the side surface of the sliding block (10), two corner parts of the moving contact (15) are arranged in the two rectangular holes (13), one end of a return spring (17) is arranged in the side round hole (14), and the other end of the return spring is propped against the inner side of the moving contact (15); a positioning bracket (19), wherein the positioning bracket (19) is provided with a contact surface for the movable contact (15) to slide, and a positive pole fixed contact (24) and a negative pole fixed contact (24) are arranged on the contact surface; when the carriage rises, the hemispherical head ejector rod (6) is released, the sliding block (10) is pushed to the upper limit position by the reset spring (17), the movable contact (15) connects the positive and negative static contacts (24), and when the hemispherical head ejector rod (6) is pressed down by the carriage, the sliding block (10) drives the movable contact (15) to move down, and the positive and negative static contacts (24) are disconnected.

2. The long-stroke alarm sensor of the dump truck according to claim 1, wherein the positive and negative leads (25) are connected with the tail ends of the positive and negative stationary contacts (24) and extend through the wire clamping groove (21) and then penetrate out of the machine body through the waterproof plug (23) at the bottom end of the machine body (1) to be connected with an alarm on an external vehicle.

3. The long-stroke alarm sensor of the dump truck as claimed in claim 1, wherein a cover plate (29) for sealing the inner cavity of the body is arranged on one side of the body, the cover plate (29) covers the rectangular groove (26), a rectangular sealing ring (27) is arranged in the groove (26), locking columns (28) are arranged at four corners of the groove (26), and the locking columns (28) are embedded into four corners of the cover plate (29) to be locked on the body (1).