CN218713484U

CN218713484U - Excavator limit for height device

Info

Publication number: CN218713484U
Application number: CN202121719112.4U
Authority: CN
Inventors: 张伟
Original assignee: Sichuan Anward Track Equipment Technology Co ltd
Current assignee: Sichuan Anward Track Equipment Technology Co ltd
Priority date: 2021-07-27
Filing date: 2021-07-27
Publication date: 2023-03-24
Anticipated expiration: 2031-07-27

Abstract

The utility model provides an excavator limit for height device, including limit for height detection device, alarm device and main control system, limit for height detection device, alarm device are connected with the main control system electricity respectively, limit for height detection device includes big arm limit for height detection device and forearm limit for height detection device for detect the lifting height of the big arm of excavator/forearm and send to main control system, main control system basis the lifting height is controlled with the comparative result of predetermineeing the height alarm device sends the alarm suggestion. The height limiting device of the excavator has simple structure, can adjust and control the lifting height as required, can respectively control the lifting height of the large arm/the small arm of the excavator, provides safety guarantee measures for the operation of the large excavator, and has reliable function; the method can be applied to various height-limited scenes and has a wide application range.

Description

Excavator limit for height device

Technical Field

The utility model belongs to the technical field of mechanical equipment technique and specifically relates to an excavator limit for height device is related to.

Background

An excavator is an earth moving machine which excavates materials higher or lower than a bearing surface by using a bucket and loads the materials into a transport vehicle or unloads the materials to a stockyard, is one of the most important engineering machines in engineering construction, is widely applied to construction sites and is widely used in railway maintenance. However, there is a certain limit to the height of the excavator arm during a part of the work, for example, an electric railway line work, a tunnel work, a floor work below the highest extension height of the excavator, and the like. In the past, an excavator driver judges the safety distance between the excavator and an obstacle by visual inspection according to experience and commanders, so that the problem of potential safety hazard exists, and a device capable of limiting the travel of the excavator and giving an alarm is needed to solve the problem.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve not enough among the above-mentioned prior art, provide one kind and can realize spacing and the warning to the excavator stroke, safe, reliable excavator limit for height device provides the safety guarantee measure for the excavator is in the operation of different environment.

In order to realize the technical purpose, the utility model discloses a technical scheme does:

the utility model provides an excavator limit for height device, includes limit for height detection device, alarm device and main control system, limit for height detection device, alarm device are connected with the main control system electricity respectively, limit for height detection device includes big arm limit for height detection device and forearm limit for height detection device for detect the lifting height of excavator big arm/forearm and send to the main control system, the main control system basis lifting height and the comparative result control of predetermineeing the height alarm device sends the alarm suggestion.

Furthermore, the large arm height limit detection device comprises a base fixed on the large arm of the excavator, a limit adjusting soft rod connected with the base through a fixing bolt, and a travel limit switch fixed on a hinged support of the large arm of the excavator; when the large arm of the excavator drives the limiting and adjusting soft rod to rise to the preset height, the limiting and adjusting soft rod is contacted with a contact rod of the travel limit switch, and the travel limit switch is disconnected.

The hydraulic control system further comprises an electromagnetic valve, wherein the electromagnetic valve is connected between an oil inlet pipe and an oil return pipe of the large arm support oil cylinder of the excavator, and the electromagnetic valve is electrically connected with the control host.

Furthermore, forearm limit for height detection device includes ultrasonic sensor, ultrasonic sensor fixes on excavator forearm lift cylinder, ultrasonic sensor is connected with the main control system electricity for detect the distance of excavator forearm apart from the top object.

Furthermore, forearm limit for height detection device still includes nearly electric induction sensor, nearly electric induction sensor fixes on excavator forearm lift cylinder, nearly electric induction sensor is connected with the control host computer electricity for detect the electric field signal around the excavator forearm in real time.

Further, the alarm device is an audible and visual alarm.

Further, the alarm device and the control host are arranged in the cab.

Furthermore, a manual control switch is arranged on the control host machine and can control the alarm device to be turned on and off.

Furthermore, a master control switch is further arranged on the control host and used for controlling the opening and closing of the excavator height limiting device.

Compared with the prior art, the beneficial effects of the utility model are that: the height limiting device of the excavator has simple structure, can adjust and control the lifting height according to the requirement, can respectively control the lifting height of the big arm/the small arm of the excavator, provides safety guarantee measures for the operation of the big excavator, and has reliable function; the method can be applied to various height-limited scenes and has wide application range.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 is a schematic structural view of a height limiting device for a boom of an excavator according to the present invention;

FIG. 2 is an enlarged view of the area indicated by the dashed box in the embodiment of FIG. 1;

FIG. 3 is a first structural diagram of the height limiting device of the excavator forearm according to the present invention;

FIG. 4 is a second structural diagram of the height limiting device of the excavator forearm according to the present invention;

1-large arm of excavator, 2-electromagnetic valve, 3-base, 4-control host, 5-limit adjusting soft rod, 6-travel limit switch, 7-small arm of excavator, 8-ultrasonic sensor, 9-small arm lifting oil cylinder, 10-near electric induction sensor, and 11-alarm device.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

The utility model provides an excavator limit for height device specifically includes limit for height detection device, alarm device 11 and main control system 4, limit for height detection device, alarm device are connected with 4 electricity of main control system respectively, limit for height detection device includes big arm limit for height detection device and forearm limit for height detection device for detect the lifting height of excavator big arm/forearm and send to main control system, main control system basis lifting height and the comparative result control of predetermineeing the height alarm device sends the suggestion of reporting to the police.

Specifically, the method comprises the following steps:

the large arm height limiting detection device comprises a base 3 fixed on a large arm 1 of the excavator, a limit adjusting soft rod 5 connected with the base 3 through a fixing bolt, and a travel limit switch 6 fixed on a hinged support of the large arm 1 of the excavator; when the excavator large arm 1 rises, the limiting regulation soft rod 5 is driven to rise together, when the excavator large arm rises to a preset height, the limiting regulation soft rod is contacted with a contact rod of a travel limit switch, the travel limit switch 6 is disconnected, meanwhile, the control host 4 sends a control signal to the alarm device 11, and the alarm device 11 sends an alarm prompt.

The excavator height limiting device further comprises an electromagnetic valve 2, the electromagnetic valve 2 is connected between an oil inlet pipe and an oil return pipe of a support oil cylinder of the large arm 1 of the excavator, and the electromagnetic valve 2 is electrically connected with the control host. When the hydraulic cylinder is lifted to a preset height, the limit adjusting soft rod is contacted with a contact rod of the travel limit switch, when the travel limit switch 6 is switched off, the electromagnetic valve 2 is synchronously opened, so that hydraulic oil which should enter the hydraulic cylinder returns to the oil tank through the electromagnetic valve, and meanwhile, an oil inlet path and an oil outlet path of the large-arm hydraulic cylinder are also sealed, so that the large arm cannot fall back or rise, and the lifting action of the large arm is automatically cut off; after the excavator boom descends, the alarm is released.

Forearm limit for height detection device is including fixing the ultrasonic sensor 8 on excavator forearm 7 lift cylinder 9, ultrasonic sensor 8 is connected with main control system 4 electricity, ultrasonic sensor is used for detecting the distance of excavator forearm apart from the top object, and when the forearm promoted, when ultrasonic sensor detected the distance of excavator forearm apart from the top object to setting for the scope value, alarm device sent the police dispatch newspaper suggestion, and the operator stops to continue to promote the action, avoids the collision, and the excavator forearm descends the back, and the police dispatch newspaper is relieved.

Further, forearm limit for height detection device still includes fixes nearly electric induction sensor 10 on excavator forearm lift cylinder 9 for electric field signal around the real-time detection, the induction current signal, and through filtering, amplification processing, get into the treater after AD conversion, when nearly electric induction sensor 10 apart from the top contact net to being greater than the alarm valve of settlement, the treater then sends alarm sign signal through radio module, alarm device receives alarm command then sends the alarm suggestion.

Further, the alarm device 11 is an audible and visual alarm, and can emit flashing light and alarm sound to warn at the same time.

Furthermore, the alarm device 11 and the control host 4 are arranged in the cab, when the alarm device gives an alarm prompt, the alarm prompt is ensured to play a role in warning the driver, and the control host is provided with a manual control switch which can control the on and off of the alarm device; the control host is also provided with a master control switch for controlling the opening and closing of the whole set of device, and when the excavator works in a conventional environment, the height limiting device of the excavator can be closed, so that useless work of the device is reduced, energy consumption is reduced, and the service life of the device is prolonged.

The utility model discloses an excavator limit for height device simple structure can adjust control as required and promote the height, for the big quick-witted operation provides the safety guarantee measure, and the function is reliable, and application scope is wide, can effectively solve the potential safety hazard problem that the excavator driver relies on experience, commander's eye measurement to judge the safe distance existence between excavator big/forearm top and the contact net in the past.

Of course, the present invention may have other embodiments, and those skilled in the art may make various corresponding changes and modifications according to the present invention without departing from the spirit and the essence of the present invention, and these corresponding changes and modifications should fall within the protection scope of the appended claims.

Claims

1. The utility model provides an excavator limit for height device which characterized in that: including limit for height detection device, alarm device (11) and main control system (4), limit for height detection device, alarm device are connected with main control system (4) electricity respectively, limit for height detection device includes big arm limit for height detection device and forearm limit for height detection device for detect the lifting height of excavator big arm/forearm and send to main control system (4), main control system (4) basis lifting height and the comparative result control of predetermineeing the height alarm device sends the suggestion of reporting to the police.

2. The excavator height limiting device of claim 1, wherein: the large arm height limit detection device comprises a base (3) fixed on a large arm (1) of the excavator, a limit adjusting soft rod (5) connected with the base (3) through a fixing bolt, and a travel limit switch (6) fixed on a hinged support of the large arm (1) of the excavator; when the large arm (1) of the excavator drives the limit adjusting soft rod (5) to rise to a preset height, the limit adjusting soft rod (5) is contacted with a contact rod of the travel limit switch (6), and the travel limit switch (6) is disconnected.

3. The excavator height limiting device of claim 2, wherein: the hydraulic excavator support cylinder oil inlet and return pipe connecting device is characterized by further comprising an electromagnetic valve (2), wherein the electromagnetic valve (2) is connected between an oil inlet pipe and an oil return pipe of a support cylinder of the excavator large arm (1), and the electromagnetic valve (2) is electrically connected with the control host (4).

4. The excavator height limiting device of claim 1, wherein: the forearm height limit detection device comprises an ultrasonic sensor (8), wherein the ultrasonic sensor (8) is fixed on a lifting oil cylinder (9) of the forearm (7) of the excavator, and the ultrasonic sensor (8) is electrically connected with the control host (4) and used for detecting the distance between the forearm of the excavator and a top object.

5. The excavator height limiting device of claim 1, wherein: the forearm height limit detection device further comprises a near-electric induction sensor (10), the near-electric induction sensor (10) is fixed to the excavator forearm lifting oil cylinder (9), and the near-electric induction sensor (10) is electrically connected with the control host machine and used for detecting electric field signals around the excavator forearm in real time.

6. The excavator height limiting device of any one of claims 1 to 5, wherein: the alarm device (11) is an audible and visual alarm.

7. The excavator height limiting device of claim 6, wherein: the alarm device (11) and the control host (4) are arranged in the cab.

8. The excavator height limiting device of claim 7, wherein: and a manual control switch is arranged on the control host (4) and can control the alarm device to be turned on and off.

9. The excavator height limiting device of claim 7, wherein: and the control host (4) is also provided with a master control switch for controlling the opening and closing of the excavator height limiting device.