阅读说明：本技术 一种车载可升降工作平台载人保护装置 (Vehicle-mounted liftable work platform manned protection device ) 是由 张宝桥 郭春涛 徐雷 于 2020-12-09 设计创作，主要内容包括：本发明公开一种车载可升降工作平台载人保护装置,属于工程机械和设备技术领域。本发明的一种车载可升降工作平台载人保护装置,包括工作平台以及用于控制工作平台的液压系统,工作平台包括平台本体,平台本体上设置围挡、自锁门以及检测装置,检测装置用于检测工作平台内是否有操作人员,自锁门两端分别通过铰接件和锁扣装置与围挡连接,液压系统根据检测装置的检测信息控制工作平台移动。本发明中自锁门与工作平台围挡共同为操作人员提供机械防护,自锁门设计可实现自动闭锁,使用方便可靠,其中液压系统设置手动截止阀和电磁阀可以确保工作平台内部有人时,地面工作人员无法控制平台移动,避免发生因工作失误或者误操作,而发生高空作业人跌落伤害。(The invention discloses a manned protection device for a vehicle-mounted liftable working platform, and belongs to the technical field of engineering machinery and equipment. The invention discloses a manned protection device for a vehicle-mounted liftable working platform, which comprises the working platform and a hydraulic system for controlling the working platform, wherein the working platform comprises a platform body, an enclosure, a self-locking door and a detection device are arranged on the platform body, the detection device is used for detecting whether an operator is in the working platform, two ends of the self-locking door are respectively connected with the enclosure through a hinge piece and a locking device, and the hydraulic system controls the working platform to move according to detection information of the detection device. The self-locking door and the working platform enclosure together provide mechanical protection for operators, the self-locking door can be automatically locked due to design, the use is convenient and reliable, when a person is in the working platform, the ground workers cannot control the platform to move due to the fact that the hydraulic system is provided with the manual stop valve and the electromagnetic valve, and falling injury of the person working aloft due to working errors or misoperation is avoided.)

1. The utility model provides a manned protection device of on-vehicle liftable work platform which characterized in that: including work platform and be used for control work platform's hydraulic system, work platform includes the platform body, set up on the platform body and enclose fender, from locking door (1) and detection device (8), detection device (8) are used for detecting whether have operating personnel in the work platform, from locking door (1) both ends respectively through articulated elements and locking device with enclose the fender and connect, hydraulic system basis detection device's (8) detection information control work platform removes.

2. The manned protection device of the vehicle-mounted liftable working platform according to claim 1, characterized in that: the locking device comprises a lock body, a locking plate (5) and a lock catch (6), wherein the locking plate (5) and the lock catch (6) are arranged in a matched mode, and the locking plate (5) winds the lock catch (6) to rotate so as to open or close the self-locking door (1).

3. The manned protection device of the vehicle-mounted liftable working platform according to claim 1, characterized in that: articulated elements includes door-hinge, suit and is in epaxial spring (3) and relative setting from top to bottom and through inclined plane mutually support last installing support (2) and lower installing support (4), work as when self-locking door (1) is opened, go up installing support (2), lower installing support (4) and separate gradually and compress spring (3), work as when self-locking door (1) is closed, spring (3) pop out and make go up installing support (2), lower installing support (4) and contact gradually.

4. The manned protection device of the vehicle-mounted liftable working platform according to claim 3, characterized in that: the locking device further comprises an adjusting screw (7), and the adjusting screw (7) is used for adjusting the position of the locking plate (5).

5. The vehicle-mounted liftable working platform manned protection device according to any one of claims 1 to 4, characterized in that: the hydraulic system comprises a chassis operating system (100) and a working platform operating system (200), wherein the chassis operating system (100) and the working platform operating system (200) are respectively connected with an executing mechanism (300) used for controlling the working platform, an electromagnetic valve (110) is arranged on an oil way of the chassis operating system (100), and a manual stop valve (210) is arranged on an oil way of the working platform operating system (200).

6. The manned protection device of the vehicle-mounted liftable working platform according to claim 5, characterized in that: the hydraulic system further comprises an electric control unit, the electric control unit comprises a control module, a power supply module, an execution module and a detection module, the control module is respectively connected with the power supply module, the execution module and the detection module, the detection module utilizes the detection information of the detection device (8) and transmits the detection information to the control module, the control module receives and processes signals of the detection module and transmits the signals to the execution module, and the execution module is used for controlling the opening and closing of the electromagnetic valve (110).

7. The manned protection device of the vehicle-mounted liftable working platform according to claim 6, characterized in that: the detection device (8) is a laser scanner.

8. The manned protection device of the vehicle-mounted liftable working platform according to claim 7, characterized in that: the laser scanners are at least two and are arranged on the platform body in a detachable connection mode.

Technical Field

The invention belongs to the technical field of engineering machinery and equipment, and particularly relates to a manned protection device for a vehicle-mounted liftable working platform.

Background

The vehicle-mounted liftable working platform is a manned platform arranged on the walking equipment and used for conveying workers and tools to an aerial working position. The lifting platform has application in many engineering vehicles, such as high-altitude equipment maintenance and overhaul by using a high-altitude operation vehicle, high-altitude construction and measurement by using a lifting platform of a rock drilling trolley and an anchor rod trolley, and the like.

Because the high-altitude operation has higher danger, the standard requirements on the liftable working platform are strict, and the standard relates to structural strength, falling protection, vehicle stability (preventing overturning) and the like, and specifically refers to the EN280 standard.

Although the standards for designing and producing the liftable working platform are strict, equipment meeting the standard requirements still may be dangerous in actual use, and especially non-special high-altitude lifting platforms, such as rock drilling jumbo and anchor bar jumbo equipped with the liftable working platform and other tunnel and mining construction equipment, are usually provided with two sets of operating systems capable of controlling the lifting and moving of the platform in the platform and on a frame. When the working platform works in a manned mode, if an operator on the ground operates the control system on the ground by mistake, the operator on the aerial platform is very dangerous. A control system cut-off function is designed on one part of equipment, the working platform cannot act after the control system is cut off, and the danger caused by misoperation can be avoided.

In conclusion, how to overcome the defect that the conventional vehicle-mounted liftable working platform protection system is not safe enough is a technical problem to be solved urgently in the prior art.

Disclosure of Invention

1. Technical problem to be solved by the invention

The invention overcomes the defect that the existing vehicle-mounted liftable working platform protection system is not safe enough, and provides a vehicle-mounted liftable working platform manned protection device.

2. Technical scheme

In order to achieve the purpose, the technical scheme provided by the invention is as follows:

the invention discloses a manned protection device for a vehicle-mounted liftable working platform, which comprises the working platform and a hydraulic system for controlling the working platform, wherein the working platform comprises a platform body, an enclosure, a self-locking door and a detection device are arranged on the platform body, the detection device is used for detecting whether an operator is in the working platform, two ends of the self-locking door are respectively connected with the enclosure through a hinge piece and a locking device, and the hydraulic system controls the working platform to move according to detection information of the detection device.

As a further improvement of the present invention, the locking device comprises a lock body, and a locking plate and a locking buckle cooperatively arranged, wherein the locking plate rotates around the locking buckle to open or close the self-locking door.

As a further improvement of the invention, the hinged part comprises a door shaft, a spring sleeved on the door shaft, and an upper mounting bracket and a lower mounting bracket which are arranged oppositely up and down and matched with each other through an inclined surface, when the self-locking door is opened, the upper mounting bracket and the lower mounting bracket are gradually separated and compress the spring, and when the self-locking door is closed, the spring is popped out and the upper mounting bracket and the lower mounting bracket are gradually contacted.

As a further improvement of the present invention, the locking device further comprises an adjusting screw for adjusting the position of the locking plate.

As a further improvement of the invention, the hydraulic system comprises a chassis operating system and a working platform operating system, the chassis operating system and the working platform operating system are respectively connected with an actuating mechanism for controlling the working platform, an electromagnetic valve is arranged on an oil path of the chassis operating system, and a manual stop valve is arranged on an oil path of the working platform operating system.

As a further improvement of the invention, the hydraulic system further comprises an electric control unit, wherein the electric control unit comprises a control module, a power supply module, an execution module and a detection module, the control module is respectively connected with the power supply module, the execution module and the detection module, the detection module detects information by using a detection device and transmits the information to the control module, the control module receives and processes signals of the detection module and transmits the signals to the execution module, and the execution module is used for controlling the opening and closing of the electromagnetic valve.

As a further improvement of the invention, the detection means is a laser scanner.

As a further improvement of the invention, the number of the laser scanners is at least two, and the laser scanners are arranged on the platform body in a detachable connection mode.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the invention has the following remarkable effects:

according to the vehicle-mounted liftable work platform manned protection device, the self-locking door and the work platform enclosure are used together for providing mechanical protection for operators, automatic locking can be realized through the self-locking door design, and the use is convenient and reliable, the ground workers cannot control the platform to move when people are in the work platform due to the arrangement of the manual stop valve and the electromagnetic valve in the hydraulic system, and falling injury of the aerial workers due to work errors or misoperation is avoided; moreover, if operators in the platform need to frequently control the platform to move, the links of manually cutting off the operating system can be reduced, and the use convenience is improved.

Drawings

FIG. 1 is a schematic structural view of a man-carrying protection device of a vehicle-mounted liftable working platform of the invention;

FIG. 2 is a schematic structural diagram of an electronic control unit according to the present invention;

fig. 3 is a schematic diagram of the oil circuit of the hydraulic system of the present invention.

Reference numerals:

1. a self-locking door; 2. installing a bracket; 3. a spring; 4. a lower mounting bracket; 5. a locking plate; 6. locking; 7. adjusting screws; 8. and (4) a detection device.

Detailed Description

For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings and examples.

With reference to fig. 1, the manned protection device for the vehicle-mounted liftable working platform comprises a working platform and a hydraulic system for controlling the working platform, wherein the working platform comprises a platform body, the platform body is provided with an enclosure, a self-locking door 1 and a detection device 8, the detection device 8 is used for detecting whether an operator is on the working platform, two ends of the self-locking door 1 are respectively connected with the enclosure through hinge parts and a locking device, the hydraulic system controls the working platform to move according to detection information of the detection device 8, namely, the chassis operator can control the working platform to move through the hydraulic system.

In the embodiment, the locking device comprises a lock body, and a locking piece 5 and a lock catch 6 which are cooperatively arranged, wherein the locking piece 5 rotates around the lock catch 6 to open or close the self-locking door 1; the articulated elements include door-hinge, suit at epaxial spring 3 of door and relative setting up and through inclined plane mutually supporting last installing support 2 and lower installing support 4 from top to bottom, when self-locking door 1 is opened, go up installing support 2, lower installing support 4 and separate gradually and compression spring 3, when self-locking door 1 closed, spring 3 pops out and makes and go up installing support 2, lower installing support 4 and contact gradually. In addition, the locking device in this embodiment further includes an adjusting screw 7, and the adjusting screw 7 is used for adjusting the position of the locking plate 5.

The manned protection device of the vehicle-mounted liftable working platform takes a cantilever type working platform as an example, and the structure of the manned protection device is shown in fig. 1. Wherein, auto-lock door 1 is interior open design, and the upper and lower installing support of door-hinge is the inclined plane contact cooperation, when the staff need get into work platform, to the inside sliding door of platform, auto-lock door 1 is opened to the inside rotation of work platform, and the inclined plane contact cooperation of upper and lower installing support can become the point contact, and the door can promote in the direction of height, and spring 3 is compressed simultaneously, when the door is opened completely, can promote about 40 mm.

After the working personnel enter the working platform, pushing force or pulling force is not applied to the self-locking door 1 any more, the spring 3 which is compressed previously releases elastic potential energy, and the gravitational potential energy of the lifted self-locking door 1 is released at the same time, so that the self-locking door 1 is rotated and closed; when the door is closed, the door lock positioned on the other side of the door shaft can lock the self-locking door 1 and cannot be opened by self.

When the self-locking door 1 is locked, the lock body and the locking plate 5 which are positioned on the self-locking door 1 rotate around the door shaft, and the spring 3 can release elastic potential energy and the self-locking door 1 gravity potential energy, so that the self-locking door has a certain initial speed, the locking plate 5 which is adjusted by the adjusting screw 7 strikes the lock catch 6, the locking plate 5 can rotate around the lock body pin, the locking plate 5 can upwards bounce, then the locking groove on the locking plate 5 catches the lock catch 6 when the gravity falls, and therefore the automatic locking of the self-locking door 1 is realized.

To sum up, the on-vehicle liftable work platform manned protection device of this embodiment encloses the fender with work platform from lock door 1 and provides mechanical protection for operating personnel jointly, avoids taking place the high altitude risk of falling, and of course, work platform also can provide the protection ceiling for operating personnel, prevents that the high altitude junk from causing the injury to operating personnel.

Referring to fig. 3, as an implementation manner, the hydraulic system in this embodiment includes a chassis operating system 100 and a work platform operating system 200, the chassis operating system 100 and the work platform operating system 200 are respectively connected to an executing mechanism 300 for controlling a work platform, an electromagnetic valve 110 is disposed on an oil path of the chassis operating system 100, and a manual stop valve 210 is disposed on an oil path of the work platform operating system 200.

In this embodiment, the chassis operating system 100 and the working platform operating system 200 are two sets of the same hydraulic control pilot-operated systems for controlling the movement of the working platform, and an operator can control the action of the hydraulic oil cylinder in the actuating mechanism 300 through the pilot-operated handle control valve, so as to realize the actions of lifting, descending, translating and the like of the working platform.

Further, with reference to fig. 2, in this embodiment, the hydraulic system further includes an electronic control unit, the electronic control unit includes a control module, a power supply module, an execution module, and a detection module, the control module is respectively connected to the power supply module, the execution module, and the detection module, the detection module detects information by using the detection device 8 and transmits the information to the control module, the control module receives and processes a signal of the detection module and transmits the signal to the execution module, and the execution module is configured to control the opening and closing of the electromagnetic valve 110.

It should be noted that, in this embodiment, the electromagnetic valve 110 is disposed on the oil path of the chassis operating system 100, and when the electronic control unit detects that the working platform is occupied, the control module outputs an electromagnetic valve power-on signal, and the coil of the electromagnetic valve 110 is powered on, so as to cut off the pilot oil path of the chassis operating system 100, so that the chassis operating system 100 cannot control the movement of the working platform, and only the working platform operating system 200 can control the movement of the platform; when the detection module has no input signal or no human signal, the control module outputs an electric signal, the solenoid valve 110 coil is not powered, the pilot oil circuit is normally open, and the chassis operating system 100 and the working platform operating system 200 can control the working platform to move.

The hydraulic system of this embodiment, when the inside operating personnel of work platform frequently controls the platform and removes, need not to repeat the manual two operating system that cut off/open, convenient to use eliminates the potential safety hazard that probably causes because of ground staff's maloperation simultaneously.

In this embodiment, the work platform operating system 200 retains the manual stop valve 210, when the manual stop valve 210 is opened, the high-pressure oil path of the hydraulic system is directly communicated with the oil return path, the system pressure is zero, and the chassis operating system 100 and the work platform operating system 200 cannot control the movement of the work platform.

When work platform needs long-time high altitude fixed point operation, can open manual stop valve 210, the dual system cuts off simultaneously this moment, and any maloperation can not lead to work platform to remove, and the security is high, and when the platform was removed again to needs, it can to close manual stop valve 210 again.

Further, in the present embodiment, the power supply module is generally a 24V power supply, and mainly supplies power to the control module, the detection module, and the execution module; the control module is generally a programmable controller such as a PLC (programmable logic controller) and the like, receives and processes the signals of the detection module, and determines whether to output the signals to the execution module according to the signals; the execution module is generally a hydraulic system electromagnetic valve, controls the position of a valve core of the electromagnetic valve according to a control module signal, and determines a corresponding function according to the position of the valve core; the detection module is generally a photoelectric sensor, senses and detects whether a person or an object exists in a working range, and provides an input signal for the control module.

In addition, in this embodiment, the detection device 8 is a laser scanner, and in order to further detect the situation inside the working platform, the number of the laser scanners in this embodiment is at least two, and the laser scanners are detachably connected to the platform body, so that the detection device can be installed and replaced.

In the embodiment, the detection module selects a laser scanner to be installed in the working platform, if people exist in the working platform, the laser scanner emits laser to detect the laser, the laser is transmitted to the control module in a people signal form, and the control module outputs an electromagnetic valve power-on signal after receiving the people signal; if no person exists in the platform, the scanner gives an unmanned signal, the control module outputs an electromagnetic valve electrifying-unavailable signal according to the unmanned signal, the scanner can also not generate an input signal, and the control module does not output the electromagnetic valve electrifying signal at the moment.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.