Chassis for aerial work platform

Abstract

The chassis for the aerial work platform comprises a chassis body, rotating wheels, pull ropes and supporting legs, a top groove is formed in the top end of the chassis body, two parallel limiting grooves are formed in the bottom of the top groove, limiting blocks are transversely and slidably connected to the inner sides of the limiting grooves, and the top ends of the limiting blocks are fixedly connected with the bottom of a balance weight disc; fixing rods are welded to the left side wall and the right side wall of the chassis body, the fixing rods are fixedly connected with the two ends of a supporting shaft, a rotating wheel is fixedly installed in the center of the side wall of the supporting shaft, and strip-shaped grooves are formed in the positions, in the parallel direction of the limiting grooves, of the two side walls of the chassis body; a lead screw is transversely and fixedly installed on the inner side of the strip-shaped groove. According to the chassis, the movable balance weight disc and the supporting legs are arranged to adapt to the gravity center positions in different environments, so that the chassis body is more stable.

Description

Technical Field

[0001] The present application relates to the technical field of aerial platforms, and in particular to a chassis for aerial work platforms. Background Art

[0002] Aerial work platform is a kind of equipment used to lift personnel for aerial work. It is widely used in installation, maintenance and climbing operations in industries such as municipal administration, electricity, street lights, advertising, communications, photography, gardening, transportation, docks, airports and ports, large industrial and mining enterprises, etc. The chassis of the aerial work platform is the key supporting and load-bearing structure of the aerial work platform. All parts of the whole machine are directly or indirectly installed on the chassis. In actual work, the chassis not only has to bear the weight of the fork frame, platform, and operator and the dynamic load caused by them, but also has to transmit the force and torque of each assembly.

[0003] Application No. 202020888898.1 discloses a chassis for a mast-type aerial work platform, including a base frame, a motor, a battery, a connection hole, a protective cover and an adjustment leg, etc., and four driven sprockets are driven to rotate by a chain, which reduces the energy loss in the transmission process, improves the transmission efficiency, and reduces the manufacturing cost; the four driven sprockets are symmetrically arranged at the four corners of the chassis, respectively, with good balance and will not cause the chassis to tilt; the motor is connected to the controller for easy control; a protective cover and a protective cover are arranged on the chassis to prevent dust from entering and affecting the work, and at the same time, the internal structure of the chassis is protected to avoid damage, and the motor is used to drive the active sprocket to rotate, and the active sprocket transmits power to the driven sprocket through the chain, driving the wheels connected to the driven sprocket to synchronously turn, move forward, move backward, walk obliquely, etc.; the driven sprocket is fixedly connected to the wheel frame, so that the wheel frame rotates with the rotation of the driven sprocket, so as to achieve the purpose of the motor controlling its movement, and the wheel frame is connected to the wheel through the axle, which will not hinder the rotation of the wheel and affect the forward and backward movement of the wheel.

[0004] However, in use, there are the following defects:

[0005] Although four driven sprockets are set at the four corners of the chassis to ensure the balance of the chassis, and adjustable feet are provided for support, the center of gravity of the chassis will change after the working platform is raised. In addition, if the working platform is tilted and unfolded, the center of gravity will shift. The position of the adjustable feet is relatively fixed and cannot adapt well to different center of gravity positions, resulting in the stability of the device being affected. Utility Model Content

[0006] The purpose of the present application is to provide a chassis for an aerial work platform, which solves the problem raised in the background technology that although four driven sprockets are arranged at the four corners of the chassis to ensure the balance of the chassis, and adjustable legs are provided for support, after the work platform is raised, the center of gravity of the chassis will change. In addition, if the work platform is tilted and unfolded, the center of gravity will shift, and the position of the adjustable legs is relatively fixed, which cannot adapt well to different center of gravity positions, resulting in the stability of the device being affected.

[0007] To achieve the above-mentioned objectives, the present application provides the following technical solutions: a chassis for an aerial work platform, comprising a chassis body, a rotating wheel, a pull rope and a supporting foot, a top groove being provided at the top of the chassis body, and two parallel limit grooves being provided at the bottom of the top groove, a limit block being connected to the inner side of the limit groove for transverse sliding, the top of the limit block being fixedly connected to the bottom of the counterweight plate, and the counterweight plate being connected to the inner bottom of the top groove for transverse sliding, fixing rods being welded to the left and right side walls of the chassis body, the fixing rods being fixedly connected to the two ends of the support shaft, and a rotating wheel being fixedly installed at the center of the side wall of the support shaft, strip grooves being provided on both side walls of the chassis body in a direction parallel to the limit grooves, and a screw rod being fixedly installed transversely on the inner side of the strip grooves.

[0008] In this technical solution, the center of gravity of the chassis can be changed through the top groove, counterweight plate, pull rope, rotating wheel and No. 1 motor. The counterweight plate slides horizontally in the top groove and starts after the No. 1 motor is powered on. The No. 1 motor will drive the rotating wheel to rotate, thereby moving the pull rope on its surface. The pull rope is in a taut state, so it will pull the counterweight plate to move when it moves, thereby changing the center of gravity of the chassis body. When the aerial work platform is raised, the center of gravity of the chassis body will not shift significantly, thereby increasing stability. At the same time, different positions can be selected for support through the strip groove, screw rod, No. 2 motor, hydraulic cylinder and supporting feet. After the No. 2 motor is powered on and started, it will drive the screw rod to rotate together, thereby moving the threaded block horizontally in the strip groove, driving the hydraulic cylinder and the supporting feet to change position, thereby selecting a suitable position for support, so that the center of gravity of the chassis remains stable, and skipping positions that are not suitable for support, thereby improving the practicality of the device.

[0009] As an optional solution to the technical solution of the present application, the left side wall of the counterweight plate is fixedly connected to one end of a pull rope, the other end of the pull rope passes through the left side wall of the top groove and is connected to the rotating wheel on the left side wall of the chassis body, and the other end of the pull rope passes through the bottom of the chassis body and is connected to the rotating wheel on the right side wall of the chassis body and passes through the right side wall of the top groove and is fixedly connected to the right side wall of the counterweight plate.

[0010] As an optional solution of the technical solution of the present application, the surface of the screw rod is threadedly connected with a threaded block, a battery is fixedly installed on the top of the threaded block, a hydraulic cylinder is fixedly installed on the bottom of the threaded block, and a supporting foot is fixedly installed on the bottom of the hydraulic cylinder.

[0011] As an optional solution of the technical solution of the present application, a baffle is fixedly installed on the edge of the chassis body above the strip groove.

[0012] As an optional solution of the technical solution of the present application, a No. 2 motor is fixedly installed at both ends of the left side wall of the chassis body, and the tail end of the transmission shaft of the No. 2 motor is fixedly connected to the left end of the screw rod.

[0013] As an optional solution of the technical solution of the present application, a No. 1 motor is fixedly mounted on one end of the support shaft of the left side wall of the chassis body, and the rear end of the transmission shaft of the No. 1 motor is fixedly connected to the rotating wheel.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present application can change the center of gravity of the chassis through the top groove, counterweight plate, pull rope, rotating wheel and No. 1 motor. The counterweight plate slides horizontally in the top groove and starts after the No. 1 motor is powered on. The No. 1 motor will drive the rotating wheel to rotate, thereby moving the pull rope on its surface. The pull rope is in a taut state, so it will pull the counterweight plate to move when it moves, thereby changing the center of gravity of the chassis body. When the aerial work platform is raised, the center of gravity of the chassis body will not shift significantly, thereby increasing stability.

[0016] 2. The present application can select different positions for support through the bar groove, screw rod, No. 2 motor, hydraulic cylinder and support feet. After the No. 2 motor is powered on and started, it will drive the screw rod to rotate together, so that the threaded block moves laterally in the bar groove, driving the hydraulic cylinder and the support feet to change position, thereby selecting a suitable position for support, keeping the center of gravity of the chassis stable, and skipping positions that are not suitable for support, thereby improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0018] Figure 1 An overall view of a chassis for an aerial work platform for this application;

[0019] Figure 2 A schematic diagram of the bottom structure of a chassis for an aerial work platform for this application;

[0020] Figure 3 This is a front view structural schematic diagram of a chassis for an aerial work platform according to the present application.

[0021] In the figure: 1. chassis body; 2. top groove; 3. limit groove; 4. counterweight plate; 401, limit block; 5. pull rope; 6. rotating wheel; 7. No. 1 motor; 8. strip groove; 9. screw rod; 10. threaded block; 11. battery; 12. hydraulic cylinder; 13. support foot; 14. No. 2 motor; 15. baffle; 16. fixing rod; 17. support shaft. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects of the utility model easier to understand, they are further explained below in conjunction with specific implementation methods.

[0023] like Figure 1 As shown, a chassis for an aerial work platform includes a chassis body 1, a rotating wheel 6, a pull rope 5 and a supporting foot 13. A top groove 2 is formed at the top of the chassis body 1, and two parallel limit grooves 3 are formed at the bottom of the top groove 2.

[0024] like Figure 1 As shown, a threaded block 10 is threadedly connected to the surface of the screw rod 9, a battery 11 is fixedly installed on the top of the threaded block 10, a hydraulic cylinder 12 is fixedly installed on the bottom of the threaded block 10, and a supporting foot 13 is fixedly installed on the bottom of the hydraulic cylinder 12.

[0025] like Figure 1 and Figure 2 As shown, the inner side of the limit slot 3 is slidably connected to the limit block 401, the top of the limit block 401 is fixedly connected to the bottom of the counterweight plate 4, and the counterweight plate 4 is slidably connected to the inner bottom of the top slot 2.

[0026] like Figure 1 and Figure 2 As shown, the left side wall of the counterweight plate 4 is fixedly connected to one end of the pull rope 5, the other end of the pull rope 5 passes through the left side wall of the top groove 2 and is transmission-connected to the rotating wheel 6 on the left side wall of the chassis body 1, and the other end of the pull rope 5 passes through the bottom of the chassis body 1 and is transmission-connected to the rotating wheel 6 on the right side wall of the chassis body 1 and passes through the right side wall of the top groove 2 and is fixedly connected to the right side wall of the counterweight plate 4.

[0027] like Figure 2 and Figure 3 As shown, the left and right side walls of the chassis body 1 are welded with fixing rods 16, the fixing rods 16 are fixedly connected to the two ends of the support shaft 17, and a rotating wheel 6 is fixedly installed in the center of the side wall of the support shaft 17, and strip grooves 8 are opened on both side walls of the chassis body 1 in the direction parallel to the limiting groove 3, and a screw rod 9 is fixedly installed laterally on the inner side of the strip groove 8.

[0028] A baffle 15 is fixedly mounted on the edge of the chassis body 1 above the strip groove 8 .

[0029] A second motor 14 is fixedly mounted on both ends of the left side wall of the chassis body 1 , and the tail end of the transmission shaft of the second motor 14 is fixedly connected to the left end of the screw rod 9 .

[0030] A No. 1 motor 7 is fixedly mounted on one end of a support shaft 17 on the left side wall of the chassis body 1 , and a rear end of a transmission shaft of the No. 1 motor 7 is fixedly connected to the rotating wheel 6 .

[0031] In actual use, the center of gravity of the chassis can be changed through the top groove 2, the counterweight plate 4, the pull rope 5, the rotating wheel 6 and the No. 1 motor 7. The counterweight plate 4 slides horizontally in the top groove 2, and is started after the No. 1 motor 7 is powered on. The No. 1 motor 7 will drive the rotating wheel 6 to rotate, thereby moving the pull rope 5 on its surface. The pull rope 5 is in a taut state, so it will pull the counterweight plate 4 to move during movement, thereby changing the center of gravity of the chassis body 1. After the aerial work platform is raised, the center of gravity of the chassis body 1 will not shift significantly, thereby increasing stability. At the same time, different positions can be selected for support through the strip groove 8, the screw rod 9, the No. 2 motor 14, the hydraulic cylinder 12 and the supporting foot 13. After the No. 2 motor 14 is powered on and started, it will drive the screw rod 9 to rotate together, thereby causing the threaded block 10 to move horizontally in the strip groove 8, driving the hydraulic cylinder 12 and the supporting foot 13 to change position, thereby selecting a suitable position for support, so that the center of gravity of the chassis remains stable, and skipping positions that are not suitable for support, thereby improving the practicality of the device.

Claims

1. A chassis for an aerial work platform, comprising a chassis body (1), a rotating wheel (6), a pull rope (5) and a supporting foot (13), characterized in that: The top of the chassis body (1) is provided with a top groove (2), the bottom of the top groove (2) is provided with two parallel limit grooves (3), the inner side of the limit groove (3) is laterally slidably connected to a limit block (401), the top of the limit block (401) is fixedly connected to the bottom of the counterweight plate (4), and the counterweight plate (4) is laterally slidably connected to the inner bottom of the top groove (2), the left and right side walls of the chassis body (1) are welded with fixed rods (16), the fixed rods (16) are fixedly connected to the two ends of the support shaft (17), and a rotating wheel (6) is fixedly installed in the center of the side wall of the support shaft (17), and the two side walls of the chassis body (1) in the direction parallel to the limit groove (3) are provided with strip grooves (8), and the inner side of the strip groove (8) is laterally fixedly installed with a screw rod (9).

2. A chassis for an aerial work platform according to claim 1, characterized in that: The left side wall of the counterweight plate (4) is fixedly connected to one end of a drawstring (5), the other end of the drawstring (5) passes through the left side wall of the top groove (2) and is transmission-connected to a rotating wheel (6) on the left side wall of the chassis body (1), and the other end of the drawstring (5) passes through the bottom of the chassis body (1) and is transmission-connected to a rotating wheel (6) on the right side wall of the chassis body (1), passes through the right side wall of the top groove (2), and is fixedly connected to the right side wall of the counterweight plate (4).

3. A chassis for an aerial work platform according to claim 1, characterized in that: The surface of the screw rod (9) is threadedly connected to a threaded block (10), a battery (11) is fixedly mounted on the top of the threaded block (10), a hydraulic cylinder (12) is fixedly mounted on the bottom of the threaded block (10), and a supporting foot (13) is fixedly mounted on the bottom of the hydraulic cylinder (12).

4. The chassis for an aerial work platform according to claim 1, characterized in that: A baffle (15) is fixedly mounted on the edge of the chassis body (1) above the strip-shaped groove (8).

5. The chassis for an aerial work platform according to claim 1, characterized in that: A second motor (14) is fixedly mounted at both ends of the left side wall of the chassis body (1), and the rear end of the transmission shaft of the second motor (14) is fixedly connected to the left end of the screw rod (9).

6. The chassis for an aerial work platform according to claim 1, characterized in that: A No. 1 motor (7) is fixedly mounted on one end of a support shaft (17) on the left side wall of the chassis body (1), and a rear end of a transmission shaft of the No. 1 motor (7) is fixedly connected to a rotating wheel (6).

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