Mast type overhead working truck with emergency descending function

Abstract

The utility model relates to the technical field of mast type overhead working trucks, in particular to a mast type overhead working truck with an emergency descending function, which comprises a chassis, a rotary table, a mast, a case, a fly boom, a working bucket and an emergency device. Crawlers are arranged on two sides of the chassis, a rotary table is mounted on the chassis, masts and a case are fixedly mounted on the rotary table, the masts are in multiple stages, the primary mast is fixedly connected with the rotary table, the subsequent masts are in transmission connection, the final mast is hinged to a fly boom, and the fly boom is hinged to a working bucket. A lifting oil cylinder is arranged between the primary mast and the secondary mast, and a fluctuating oil cylinder is arranged in the fly boom; the lifting oil cylinder is connected with the lifting electromagnetic valve, the lifting electromagnetic valve is matched with the lifting emergency hand pulling valve, the fluctuating oil cylinder is connected with the fluctuating electromagnetic valve, and the fluctuating electromagnetic valve is matched with the fluctuating emergency hand pulling valve. According to the utility model, the emergency device is arranged, so that the mast and the fly jib can be put down if an accident occurs in the operation process, and the personal safety of operators is ensured.

Description

Technical Field

[0001] This utility model relates to the technical field of mast-type aerial work platforms, specifically to a mast-type aerial work platform with an emergency descent function. Background Technology

[0002] Mast-mounted aerial work platforms are a type of aerial work platform. Due to their compact size, they are generally suitable for inspection and maintenance in indoor or confined spaces. The emergence of mast-mounted aerial work platforms has brought convenience to inspection and maintenance in indoor or confined spaces.

[0003] Existing mast-type aerial work platforms are generally equipped with a chassis, on which a turntable drives the mast to rotate. The mast is telescopic and is driven by a combination of hydraulic cylinders and chains. The end of the mast is connected to the work bucket via a boom. The vertical movement of the mast makes it convenient for use in confined spaces.

[0004] Existing mast-type aerial work platforms lack emergency functions. If an unexpected situation occurs during use, such as equipment failure, the workers in the work bucket may face prolonged suspension in the air, posing a significant safety hazard. Therefore, a mast-type aerial work platform that can lower the work bucket to the ground in case of an emergency, thereby ensuring the personal safety of the workers, is an existing problem that needs to be solved. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of the existing technology by providing a mast-type aerial work platform with an emergency descent function, so as to effectively ensure the personal safety of workers in case of unexpected situations during operation.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a mast-type aerial work platform with emergency descent function, comprising a chassis, a turntable, a mast, a boom, and a work bucket; the mast is configured with multiple stages, the primary mast is fixedly connected to the turntable, and the primary mast and the secondary mast are connected by a lifting cylinder; the final stage mast is hinged to one end of the boom, and the other end of the boom is hinged to the work bucket, and an undulating cylinder is provided in the boom; emergency devices are provided on the primary mast and the boom, and the emergency devices cooperate with the lifting cylinder and the undulating cylinder respectively.

[0007] Furthermore, tracks are installed on both sides of the chassis.

[0008] Furthermore, a housing is installed on the rotary table. The housing includes an upper part and a lower part. The lower part is a battery box, in which a power battery is installed. A power unit is set in the upper part. The power unit is connected to a control panel. The control panel is connected to the lifting cylinder and the undulating cylinder respectively.

[0009] Furthermore, a leveling device is installed and fixed on the primary mast, and an audible and visual alarm is installed on the chassis. The leveling device is connected to the control panel, and the control panel is connected to the audible and visual alarm.

[0010] Furthermore, the emergency device includes a lifting solenoid valve, which is mounted on the primary mast and connected to a lifting cylinder. The lifting solenoid valve also cooperates with a lifting emergency hand-operated valve, which is mounted on the primary mast.

[0011] Furthermore, the emergency device includes an undulating solenoid valve, which is mounted on the flying arm. The undulating solenoid valve is connected to the undulating cylinder and cooperates with the undulating emergency hand-operated valve, which is mounted on the final mast.

[0012] The beneficial effects of this utility model are:

[0013] 1. The chassis of this utility model is connected to the tracks on both sides. By setting the tracks, this utility model can adapt to more complex working environments and is easier to use.

[0014] 2. This utility model is equipped with a leveling device to measure the vehicle body angle, which can prevent the vehicle body from tilting excessively during the process and ensure operational safety.

[0015] 3. An emergency device is provided in this utility model. In the event of an accident, the lifting cylinder and the undulating cylinder can be retracted, thereby lowering the mast and the boom to the ground and ensuring the safety of the workers. Attached Figure Description

[0016] Figure 1 This is a front view schematic diagram of the overall structure of this utility model (folded state);

[0017] Figure 2 This is a left-side view of the overall structure of this utility model (in the folded state);

[0018] Figure 3 This is a front view schematic diagram of the overall structure of this utility model (in unfolded state);

[0019] Figure 4 This is a utility model Figure 3 A magnified view of part A in the middle;

[0020] Figure 5 This is a utility model Figure 3 A magnified view of part B in the diagram.

[0021] The names corresponding to each mark in the diagram:

[0022] 1. Chassis; 11. Tracks; 2. Turntable; 3. Engine box; 31. Battery box; 32. Power unit; 33. Control panel; 4. Mast; 41. Primary mast; 42. Secondary mast; 43. Final mast; 44. Leveling device; 45. Lifting cylinder; 5. Flying boom; 51. Elevating cylinder; 6. Working bucket; 7. Emergency device; 71. Lifting solenoid valve; 72. Lifting emergency hand valve; 73. Elevating solenoid valve; 74. Elevating emergency hand valve. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0024] Embodiments of this utility model:

[0025] like Figure 1-5 As shown, in this embodiment, the mast-type aerial work platform vehicle is equipped with a chassis 1, a turntable 2 is installed on the chassis 1, and a housing 3 and a mast 4 are fixedly installed on the turntable 2.

[0026] In this embodiment, the mast 4 is provided with multiple stages, wherein the primary mast 41 is fixedly connected to the turntable 2, the primary mast 41 and the secondary mast 42 are connected by a lifting cylinder 45, the subsequent multi-stage masts are connected by a chain drive, and the final stage mast 43 is hinged to the boom 5, and at the end of the boom 5 it is hinged to the working bucket 6.

[0027] In this embodiment, a lifting solenoid valve 71 is fixedly installed on the primary mast 41. The lifting solenoid valve 71 is connected to the lifting cylinder 45, and a lifting emergency hand-operated valve 72 is provided. The lifting emergency hand-operated valve 72 cooperates with the lifting solenoid valve 71.

[0028] In this embodiment, an undulating solenoid valve 73 is installed on the flying arm 5. The undulating solenoid valve 73 is connected to the undulating cylinder 51, and an undulating emergency hand-operated valve 74 is provided. The undulating emergency hand-operated valve 74 cooperates with the undulating solenoid valve 73.

[0029] In this embodiment, a power unit 32 is provided in the housing 3. The power unit 32 is connected to the control panel 33 and is also connected to the lifting cylinder 45 and the undulating cylinder 51. In this embodiment, the power unit 32 is a hydraulic pump used to control the lifting cylinder 45 and the undulating cylinder 51.

[0030] In another embodiment of this utility model, tracks 11 are installed on both sides of the chassis 1, and a leveling device 44 is installed and fixed on the primary mast 41. In this embodiment, the leveling device 44 is an electronic level. The electronic level is connected to the audible and visual alarm on the chassis 3 through the control panel 33. When the tilt angle is greater than 3°, an alarm is triggered.

[0031] In another embodiment of this utility model, the chassis 3 includes upper and lower parts. A battery box 31 is provided in the lower part, and a power battery is installed in the battery box 31. In this embodiment, the power battery is 48V 330Ah and can work continuously for 10 hours.

[0032] The principle of this utility model is as follows:

[0033] During use, the tracks 11 are installed on the chassis 1, which makes the mast-type aerial work platform vehicle of this utility model move more smoothly and is more convenient for operation in complex environments.

[0034] Before use, the electronic level can detect the angle of the vehicle body. When the detected angle is greater than 3°, the alarm will sound to remind the operator to find a suitable position to ensure the safety of the operation. The electromagnetic level is an existing technology, and the signal transmission and control are also existing mature technologies. Its structure and working principle will not be described in detail.

[0035] In the event of a sudden malfunction during the use of this utility model, the work bucket 6 can be lowered to the ground via the emergency device 7, thereby ensuring the safety of the workers. The emergency device 7 consists of two parts: one part is the lifting emergency hand-operated valve 72, which is used to control the lifting cylinder 45. By pulling the lifting emergency hand-operated valve 72, the lifting cylinder 45 retracts, which can drive the masts at each level to retract. After the masts at each level are retracted, the undulating emergency hand-operated valve 74 is pulled, which causes the undulating cylinder 51 to retract, thereby lowering the work bucket 6 to the ground, thus ensuring the safety of the workers. The solenoid valve and emergency hand-operated valve involved are existing ones, and their working principles will not be described in detail.

[0036] This utility model involves a multi-stage mast. In the process, the primary mast 41 and the secondary mast 42 are driven by a lifting cylinder 45, and the subsequent masts are driven by a chain. The synchronous raising and lowering of each stage of the mast can be achieved by using only one lifting cylinder 45 in conjunction with the chain. The mechanism and working principle involved in this process are existing mature technologies, such as the new type of lifting mast for aerial work platforms disclosed in Chinese utility model patent CN219670058U, which is easy for those skilled in the art to understand and will not be described in detail here.

Claims

1. A mast-type aerial work platform with emergency descent function, comprising a chassis (1), a turntable (2), a mast (4), a boom (5), and a work bucket (6); the mast (4) is provided with multiple stages, the primary mast (41) is fixedly connected to the turntable (2), and the primary mast (41) and the secondary mast (42) are connected by a lifting cylinder (45); the final stage mast (43) is hinged to one end of the boom (5), and the other end of the boom (5) is hinged to the work bucket (6), and an undulating cylinder (51) is provided in the boom (5); characterized in that: Emergency devices (7) are provided on the primary mast (41) and the boom (5), and the emergency devices (7) are respectively coordinated with the lifting cylinder (45) and the undulating cylinder (51).

2. The mast-type aerial work platform with emergency descent function according to claim 1, characterized in that: Tracks (11) are installed on both sides of the chassis.

3. The mast-type aerial work platform with emergency descent function according to claim 1, characterized in that: The rotary table (2) is equipped with a housing (3), which includes an upper part and a lower part. The lower part is a battery box (31), in which a power battery is installed. The upper part is equipped with a power unit (32), which is connected to a control panel (33). The control panel (33) is connected to a lifting cylinder (45) and an undulating cylinder (51).

4. The mast-type aerial work platform with emergency descent function according to claim 3, characterized in that: A leveling device (44) is installed and fixed on the primary mast (41), and an audible and visual alarm is installed on the chassis (3). The leveling device (44) is connected to the control panel (33), and the control panel (33) is connected to the audible and visual alarm.

5. A mast-type aerial work platform with emergency descent function according to claim 1, characterized in that: The emergency device (7) includes a lifting solenoid valve (71), which is installed on the primary mast (41). The lifting solenoid valve (71) is connected to the lifting cylinder (45). The lifting solenoid valve (71) is coordinated with the lifting emergency hand-operated valve (72), which is installed on the primary mast (41).

6. The mast-type aerial work platform with emergency descent function according to claim 1, characterized in that: The emergency device (7) includes an undulating solenoid valve (73), an air-floating solenoid valve is mounted on the flying arm (5), the undulating solenoid valve (73) is connected to the undulating cylinder (51), the undulating solenoid valve (73) cooperates with the undulating emergency hand-operated valve (74), and the undulating emergency hand-operated valve (74) is mounted on the last mast (43).

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