Lifting platform car with rotating platform

Abstract

The lifting platform car comprises a driving mechanism and the rotating platform, the driving mechanism comprises a hydraulic cylinder and a piston rod driven by the hydraulic cylinder, the piston rod is in transmission connection with one end of an arm fork, the other end of the arm fork is movably connected with a first supporting body, and the rotating platform comprises the first supporting body and a second supporting body. A plurality of universal balls are arranged between the first supporting body and the second supporting body, the second supporting body rotates relative to the first supporting body, a plurality of rollers are contained in the second supporting body, and the lifting platform truck with the rotating platform further comprises a control circuit. The lifting platform car with the rotating platform has the advantages that the limiting switch A3 is specially arranged, and after the limiting switch A3 located on the rotating platform 200 is activated, the circuit where the relay KM4 is located is switched off. As the relay KM1 is located in the line where the relay KM4 is located, after the limit switch A3 is activated, the function of the whole machine switch A4 is achieved equivalently, and the relay KM1 stops working.

Description

Technical Field

[0001] The utility model belongs to the field of lifting platforms, and in particular relates to a lifting platform vehicle with a rotating platform. Background Art

[0002] The publication number is CN214520069U, the subject name is a utility model patent for a rotary table with a lifting mechanism, and its IPC classification number is B25H1 / 14, B25H1 / 16. Its technical solution discloses "comprising a frame 1, a fixed table 2, and a bottom plate 3 fixedly connected to the bottom of the frame 1, the top of the frame 1 is fixedly connected to a support plate 4, the top of the support plate 4 and the surface of the fixed column 64 are fixedly connected to a fixed sleeve 66, the top of the support plate 4 and the two sides of the driver 62 are fixedly connected to a follower 67, and the surface of the follower 67 is rotatably connected to a driven wheel 68 The surface of the driven wheel 68 is meshed with the surface of the driving wheel 63. The front and back sides of the top of the support plate 4 are fixedly connected with fixed columns 64, and the inside of the fixed column 64 is rotatably connected with a screw rod 65, and the top of the screw rod 65 is rotatably connected to the bottom of the fixed platform 2 through a bearing. The top of the support plate 4 is fixedly connected with a driver 62, and both sides of the driver 62 are rotatably connected with driving wheels 63. The surface of the support plate 4 is provided with a lifting mechanism 6, and the lifting mechanism 6 includes a lifting motor 61. The top of the lifting motor 61 is fixedly connected to the bottom of the support plate 4. The surface of the fixed platform 2 is provided with a rotating mechanism 5".

[0003] It can be seen that the above utility model patent has disclosed a support plate driven by a lifting motor, and a rotating mechanism is arranged on the surface of the fixed platform. However, the technical solution of the above utility model patent does not further extend to the circuit structure of the rotating platform, and does not solve the problem of how to control the lifting through the circuit structure. Utility Model Content

[0004] The utility model aims at the existing technical situation, overcomes the above defects and provides a lifting platform vehicle with a rotating platform.

[0005] The utility model adopts the following technical scheme, a lifting platform vehicle with a rotating platform, including a driving mechanism and a rotating platform, the driving mechanism including a hydraulic cylinder and a piston rod driven by the hydraulic cylinder, the piston rod is connected to one end of an arm fork by transmission, the other end of the arm fork is movably connected to a first support body, the rotating platform includes a first support body and a second support body, a plurality of universal balls are arranged between the first support body and the second support body, the second support body rotates relative to the first support body, the second support body accommodates a plurality of rollers, and the lifting platform vehicle with a rotating platform also includes a control circuit, the control circuit includes:

[0006] The whole machine switch A4, one end of the whole machine switch A4 is connected to the power supply L, and the other end of the whole machine switch A4 is electrically connected to the relay KM1 through the relay KM4;

[0007] Induction switch A1 and time relay T2, one end of the induction switch A1 is connected to the power supply N, and the other end of the induction switch A1 is electrically connected to relay KM3 through relay KM2, one end of the time relay T2 is connected to the power supply N, and the other end of the time relay T2 is electrically connected to relay KM2 through relay KM3, and the output end of the time relay T2 is electrically connected to the hydraulic cylinder 110 through a cable.

[0008] As a further preferred technical solution of the above technical solution, the control circuit further includes a magnetic sensitive switch A2, one end of the magnetic sensitive switch A2 is connected to the power supply N, and the other end of the magnetic sensitive switch A2 is electrically connected to the relay KM3.

[0009] As a further preferred technical solution of the above technical solution, the magnetic sensitive switch A2 is located on the inner side of the second support body.

[0010] As a further preferred technical solution of the above technical solution, the control circuit further includes a limit switch A3, one end of the limit switch A3 is connected to the power supply N, and the other end of the limit switch A3 is electrically connected to the relay KM4.

[0011] As a further preferred technical solution of the above technical solution, the limit switches A3 are located at both ends of the second support body.

[0012] The lifting platform vehicle with a rotating platform disclosed in the utility model has the following beneficial effects:

[0013] 1. Specially configured magnetic sensitive switch A2. After the magnetic sensitive switch A2 located on the rotating platform 200 is activated, the line where the relay KM3 is located is turned off. Since the relay KM3 is located between the relay KM2 and the time relay T2, when the rotating platform 200 accidentally places a magnetic object, the magnetic sensitive switch A2 is activated, and the time relay T2 no longer continues to work, ensuring that even if the time relay T2 automatically delays the preset time, the hydraulic cylinder 110 will not start working normally. Until the magnetic object located on the rotating platform 200 is removed, the magnetic sensitive switch A2 is no longer activated, and the time relay T2 can work normally and automatically delay the preset time.

[0014] 2. A limit switch A3 is specially configured. When the limit switch A3 located on the rotating platform 200 is activated, the circuit where the relay KM4 is located is cut off. Since the relay KM1 is located on the circuit where the relay KM4 is located, when the limit switch A3 is activated, it is equivalent to playing the role of the whole machine switch A4, causing the relay KM1 to stop working. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the main view of this application.

[0016] Figure 2 It is a top view of the rotating platform of the present application.

[0017] Figure 3 It is a schematic diagram of the universal ball of the present application.

[0018] Figure 4 is a schematic diagram of the drum of the present application.

[0019] Figures 5 to 9 They are Figure 1 Partially enlarged images of areas A, B, C, D and E.

[0020] Fig.10 It is a partial schematic diagram of the control circuit of the present application.

[0021] Fig.11 It is a partial schematic diagram of the control circuit of the present application.

[0022] The reference numerals include: 100 - driving mechanism; 110 - hydraulic cylinder; 120 - piston rod; 130 - arm fork; 200 - rotating platform; 201 - first support body; 202 - second support body; 210 - universal ball; 220 - roller; 221 - gap. DETAILED DESCRIPTION

[0023] The utility model discloses a lifting platform vehicle with a rotating platform. Figure 1-11 , the specific implementation methods of the utility model are further described.

[0024] Example 1.

[0025] Preferably, a lifting platform vehicle with a rotating platform is used to lift non-magnetic objects, including a driving mechanism 100, a rotating platform 200 and a control circuit, wherein the driving mechanism 100 includes a hydraulic cylinder 110 and a piston rod 120 driven by the hydraulic cylinder 110, the piston rod 120 is transmission-connected to one end of an arm fork 130, and the other end of the arm fork 130 is movably connected to a first support body 201, and the rotating platform 200 includes a first support body 201 and a second support body 202, and a plurality of universal balls 210 are arranged between the first support body 201 and the second support body 202, so that the second support body 202 rotates relative to the first support body 201, and the second support body 202 accommodates a plurality of rollers 220; wherein the control circuit includes:

[0026] The whole machine switch A4, one end of the whole machine switch A4 is connected to the power supply L, and the other end of the whole machine switch A4 is electrically connected to the relay KM1 through the relay KM4;

[0027] Induction switch A1 and time relay T2, one end of the induction switch A1 is connected to the power supply N, and the other end of the induction switch A1 is electrically connected to relay KM3 through relay KM2, one end of the time relay T2 is connected to the power supply N, and the other end of the time relay T2 is electrically connected to relay KM2 through relay KM3, and the output end of the time relay T2 is electrically connected to the hydraulic cylinder 110 through a cable (not shown in the figure).

[0028] The induction switch A1 is preferably located on the inner side of the second support body 202 , and there may be one or more induction switches A1 .

[0029] The control circuit further includes a magnetic sensitive switch A2, one end of the magnetic sensitive switch A2 is connected to a power source N, and the other end of the magnetic sensitive switch A2 is electrically connected to a relay KM3.

[0030] The magnetically sensitive switch A2 is preferably located on the inner side of the second support body 202 , and there may be one or more magnetically sensitive switches A2 .

[0031] The control circuit further includes a limit switch A3 , one end of the limit switch A3 is connected to a power source N, and the other end of the limit switch A3 is electrically connected to a relay KM4 .

[0032] The limit switches A3 are preferably located at two ends of the second support body 202, and there are preferably two limit switches A3.

[0033] There is a gap 221 between adjacent rollers 220 so that two adjacent rollers 220 do not interfere with each other.

[0034] Among them, the lifting platform vehicle with a rotating platform also includes 2 running wheels.

[0035] The working principle of this embodiment is described below.

[0036] Specifically, after the whole machine switch A4 is manually turned on (closed), the circuit where the relay KM1 is located is turned on, so that the relay KM1 works normally. After the induction switch A1 located on the rotating platform 200 is turned on (closed), the circuit where the relay KM2 is located is turned on, so that the relay KM2 works normally. After the circuit where the relay KM2 is located is turned on, the time relay T2 can work normally. When the time relay T2 automatically delays the preset time (to avoid the hydraulic cylinder 110 working immediately after the induction switch A1 works, to ensure safety), the hydraulic cylinder 110 can start to move normally.

[0037] Furthermore, the present application is designed for lifting non-magnetic objects, and therefore a magnetically sensitive switch A2 is specially configured. After the magnetically sensitive switch A2 located on the rotating platform 200 is activated, the circuit where the relay KM3 is located is turned off. Since the relay KM3 is located between the relay KM2 and the time relay T2, when the rotating platform 200 mistakenly places a magnetic object, the magnetically sensitive switch A2 is activated, and at this time the time relay T2 no longer continues to work, ensuring that even if the time relay T2 automatically delays the preset time, the hydraulic cylinder 110 will not start working normally. Until the magnetic object located on the rotating platform 200 is removed, the magnetically sensitive switch A2 is no longer activated, and at this time the time relay T2 can work normally and automatically delay the preset time.

[0038] Furthermore, in order to improve the overall safety, the control circuit is specially provided with a circuit breaker Q1, a circuit breaker Q2 and an emergency stop switch A5.

[0039] Furthermore, when a non-magnetic object rolls with the roller 220, there is a risk of accidentally falling from the rotating platform 200. Therefore, in order to improve the overall safety, a limit switch A3 is specially configured. After the limit switch A3 located on the rotating platform 200 is activated, the line where the relay KM4 is located is turned off. Since the relay KM1 is located on the line where the relay KM4 is located, when the limit switch A3 is activated, it is equivalent to playing the role of the whole machine switch A4, so that the relay KM1 stops working.

[0040] It is worth mentioning that the technical features such as the specific selection of the magnetic sensitive switch A2 involved in the utility model patent application should be regarded as the prior art. The specific structure, working principle and possible control method and spatial layout method of these technical features can be selected by conventional methods in the field, and should not be regarded as the invention point of the utility model patent. The utility model patent will not be further elaborated.

[0041] For those skilled in the art, it is still possible to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A lifting platform vehicle with a rotating platform, comprising a driving mechanism and a rotating platform, wherein the driving mechanism comprises a hydraulic cylinder and a piston rod driven by the hydraulic cylinder, wherein the piston rod is connected to one end of an arm fork by transmission, and the other end of the arm fork is movably connected to a first support body, wherein the rotating platform comprises a first support body and a second support body, wherein a plurality of universal balls are arranged between the first support body and the second support body, wherein the second support body rotates relative to the first support body, and wherein the second support body accommodates a plurality of rollers, wherein the first support body and the second support body are provided with a plurality of universal balls, wherein the second support body rotates relative to the first support body, and wherein the second support body accommodates a plurality of rollers, wherein the first support body and the second support body are provided with a plurality of universal balls, and wherein the second support body is provided with a plurality of universal balls, and ... The lifting platform vehicle with a rotating platform also includes a control circuit, which includes: The whole machine switch A4, one end of the whole machine switch A4 is connected to the power supply L, and the other end of the whole machine switch A4 is electrically connected to the relay KM1 through the relay KM4; Induction switch A1 and time relay T2, one end of the induction switch A1 is connected to the power supply N, and the other end of the induction switch A1 is electrically connected to relay KM3 through relay KM2, one end of the time relay T2 is connected to the power supply N, and the other end of the time relay T2 is electrically connected to relay KM2 through relay KM3, and the output end of the time relay T2 is electrically connected to the hydraulic cylinder 110 through a cable.

2. The lifting platform vehicle with a rotating platform according to claim 1, characterized in that: The control circuit further includes a magnetic sensitive switch A2 , one end of the magnetic sensitive switch A2 is connected to a power source N, and the other end of the magnetic sensitive switch A2 is electrically connected to a relay KM3 .

3. The lifting platform vehicle with a rotating platform according to claim 2, characterized in that: The magnetic sensitive switch A2 is located on the inner side of the second supporting body.

4. The lifting platform vehicle with a rotating platform according to claim 1, characterized in that: The control circuit also includes a limit switch A3 , one end of the limit switch A3 is connected to a power source N, and the other end of the limit switch A3 is electrically connected to a relay KM4 .

5. The lifting platform vehicle with a rotating platform according to claim 4, characterized in that: The limit switches A3 are located at both ends of the second support body.

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