An amphibious transport chassis and flood relief robot

Abstract

The application provides an amphibious carrying chassis and a drainage robot, and relates to the technical field of the drainage robot.The amphibious carrying chassis comprises a chassis body, a transmission box, a driving motor, a transmission mechanism, a transmission sealing mechanism and a wheel set assembly.The amphibious carrying chassis can be applied to the drainage robot, and when the robot is performing water operation, the transmission box separates the driving motor, the driving wheel, the transmission mechanism, the passive wheel and the like from water outside, and blocks the penetration of the water outside into the transmission box through the transmission sealing mechanism, so that the sealing of the transmission part of the chassis is realized, and the chassis can walk in water for a long time.In addition, the transmission sealing mechanism can realize the transmission of power through the cooperation of the stepped sleeve, the first bearing, the second bearing and the transmission shaft, and can realize the static sealing and dynamic sealing under water through the cooperation of the stepped sleeve, the sealing sleeve, the blocking sleeve, the transmission shaft, the sealing element and the space for injecting lubricating grease.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flood drainage robots, in particular to a amphibious carrying chassis and a flood drainage robot. BACKGROUND

[0002] When a flood disaster occurs, it is necessary to use a flood drainage device to drain the accumulated water in low-lying areas in time to avoid safety hazards. The use of conventional flood drainage equipment (such as traditional water pumps) for flood drainage operation is low in efficiency, and the operation personnel need to perform water operation, which is low in safety. With the development of high-end equipment manufacturing industry, flood drainage robots have appeared on the market. The pump body is moved by the flood drainage robot to keep the pump body in the accumulated water area, which greatly improves the efficiency of the flood drainage operation and is also high in safety. However, the current flood drainage robot has poor sealing of the chassis transmission part. In the long-term operation process, water will seep into the machine body from the transmission part, and the water entering the machine body will damage some devices in the machine body, causing the flood drainage robot to malfunction. SUMMARY

[0003] The purpose of the present application is to provide an amphibious carrying chassis and a flood drainage robot, which realizes the sealing of the chassis transmission part.

[0004] In order to achieve the above purpose, the technical solution adopted by the present application is as follows:

[0005] An amphibious carrying chassis, comprising:

[0006] a chassis body;

[0007] a transmission box arranged on the chassis body;

[0008] a drive motor located inside the transmission box;

[0009] an output shaft of the drive motor is provided with a drive wheel, and the drive wheel is located inside the transmission box;

[0010] a transmission mechanism located inside the transmission box;

[0011] a transmission sealing mechanism assembled on one side of the transmission box, the transmission sealing mechanism comprising a transmission shaft, one end of the transmission shaft being located inside the transmission box, the other end of the transmission shaft being located outside the transmission box, one end of the transmission shaft being provided with a driven wheel, and the drive wheel being power-connected to the driven wheel through the transmission mechanism;

[0012] the transmission sealing mechanism is used to block the water from the outside from penetrating into the transmission box;

[0013] a wheel set assembly is arranged at the other end of the transmission shaft.

[0014] Preferably, the transmission sealing mechanism further comprises a stepped sleeve, a first bearing, a sealing sleeve, a blocking sleeve, a second bearing and an inner spacer sleeve;

[0015] The inner wall of the stepped sleeve is provided with a first step, which extends along the radial direction of the stepped sleeve;

[0016] The first bearing is arranged inside the stepped sleeve at a position outside the first step, and the inner side of the outer ring of the first bearing abuts against the side wall of the first step;

[0017] The transmission shaft is provided with a second step, and the transmission shaft is arranged inside the stepped sleeve, the inner ring of the first bearing is assembled with the transmission shaft, and the outer side of the inner ring of the first bearing abuts against the side wall of the second step;

[0018] One end of the sealing sleeve is located between the stepped sleeve and the transmission shaft, the sealing sleeve is assembled with the stepped sleeve, a first static seal is arranged between the sealing sleeve and the stepped sleeve, and the outer side of the outer ring of the first bearing abuts against the end face of one end of the sealing sleeve;

[0019] One end of the sealing sleeve is provided with a third step;

[0020] One end of the blocking sleeve is located between the sealing sleeve and the transmission shaft, the blocking sleeve is assembled with the sealing sleeve, and a dynamic seal is arranged between the end face of one end of the blocking sleeve, the third step and the transmission shaft;

[0021] The second bearing is arranged inside the stepped sleeve at a position inside the first step, and the outer side of the outer ring of the second bearing abuts against the side wall of the first step;

[0022] The inner spacer sleeve is assembled on the transmission shaft, the inner ring of the second bearing is assembled with the transmission shaft, the inner spacer sleeve is located between the first bearing and the second bearing, the inner side of the inner ring of the first bearing abuts against the outer end face of the inner spacer sleeve, and the outer side of the inner ring of the second bearing abuts against the inner end face of the inner spacer sleeve;

[0023] A space for injecting lubricating grease is left between the inner spacer sleeve and the first step, and an oil injection channel is connected to the space;

[0024] An assembly hole is formed in one side of the transmission box body, and the transmission shaft passes through the assembly hole;

[0025] The inner side of the stepped sleeve is provided with a first assembly disc, the first assembly disc is assembled with one side of the transmission box body, and a second static seal is arranged between the first assembly disc and the transmission box body;

[0026] The other end of the transmission shaft is provided with a second assembly disc, and the second assembly disc is assembled with the wheel set assembly.

[0027] Preferably, the oil injection channel is located inside the transmission shaft, one end of the oil injection channel communicates with the space, the other end of the oil injection channel is located at the end face of the transmission shaft, and the other end of the oil injection channel is provided with a pressure injection oil cup.

[0028] Preferably, the first static seal is provided as an O-ring.

[0029] Preferably, the second static seal is provided as an O-ring.

[0030] Preferably, the dynamic seal is provided as a rotating seal ring for shafts.

[0031] Preferably, the transmission mechanism is provided as a chain, and the drive wheel and the driven wheel are provided as sprockets.

[0032] Preferably, the transmission box is internally provided with a chain tensioning mechanism for tensioning the chain.

[0033] Preferably, the drive motor is provided as a hydraulic motor.

[0034] A drainage robot is provided with the amphibious chassis described above.

[0035] The beneficial technical effects of the present application are:

[0036] The amphibious chassis of the present application can be applied to a drainage robot. When the robot is performing water-related operations, the transmission box isolates the drive motor, the drive wheel, the transmission mechanism, the driven wheel, etc. from the water outside, and blocks the water outside from penetrating into the transmission box through the transmission sealing mechanism. In this way, the transmission part of the chassis is sealed, so that the chassis can walk in water for a long time. In addition, the transmission sealing mechanism can realize power transmission through the cooperation of the stepped sleeve, the first bearing, the second bearing and the transmission shaft. At the same time, through the cooperation of the stepped sleeve, the sealing sleeve, the plugging sleeve, the transmission shaft, the sealing member and the space filled with lubricating grease, static sealing and dynamic sealing under water can be realized. The transmission sealing mechanism has a compact structure, a small diameter and a small occupied assembly space. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 is a front view of the drainage robot of the present application;

[0038] Figure 2 is Figure 1 is a sectional view along A-A;

[0039] Figure 3 is Figure 2 is an enlarged view of part B;

[0040] Figure 4Part structure schematic view of amphibious carrying chassis in the embodiment of the present application

[0041] Figure 5 Perspective view of transmission sealing mechanism in the embodiment of the present application

[0042] Figure 6 Front view of transmission sealing mechanism in the embodiment of the present application

[0043] Figure 7 C-C section view in the embodiment of the present application Figure 6 D-D section view in the embodiment of the present application

[0044] Figure 8 D-D section view in the embodiment of the present application Figure 6 D-D section view in the embodiment of the present application DETAILED DESCRIPTION

[0045] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to specific embodiments and drawings. Some but not all of the embodiments of the present application will be shown in the drawings. In fact, various embodiments of the present application can be implemented in many different forms, and should not be interpreted as being limited to the embodiments described herein; on the contrary, these embodiments are provided to meet the applicable legal requirements.

[0046] In the description of the present application, it should be noted that the terms "inner", "outer", "upper", "lower", "front", "back" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance.

[0047] In the embodiments of the present application, an amphibious carrying chassis and a flood-fighting robot are provided, please refer to Figures 1 to 8 .

[0048] An amphibious carrying chassis comprises a chassis body 1, a transmission box 2, a drive motor 3, a transmission mechanism 4, a transmission sealing mechanism 5 and a wheel group assembly 7.

[0049] The transmission box 2 is arranged at the edge position of the bottom of the chassis body 1. Specifically, one transmission box 2 is arranged at each edge position of the bottom of the chassis body 1.

[0050] The drive motor 3, the drive wheel 61, the transmission mechanism 4 and the passive wheel 62 are arranged inside the transmission box 2. Each transmission box 2 is arranged with one drive motor 3, one drive wheel 61, two transmission mechanisms 4 and two passive wheels 62. The output shaft of the drive motor 3 is provided with the drive wheel 61, and the drive wheel 61 is provided with two drive wheel plates, one of which is connected to one passive wheel 62 through the transmission mechanism 4, and the other is connected to the other passive wheel 62 through the transmission mechanism 4. In this way, the same side two passive wheels 62 are driven to rotate by one drive motor 3 through one drive wheel 61.

[0051] The transmission mechanism 4 in the embodiment is provided as a chain, and the drive wheel 61 and the passive wheel 62 are provided as sprockets. The drive motor 3 is provided as a cycloid hydraulic motor, and the output shaft of the drive motor 3 transmits power to the transmission shaft 53 through the sprocket and the chain. A chain tensioning mechanism 41 is arranged inside the transmission box 2, which is used to tension the chain to prevent the chain from falling off the sprocket.

[0052] The transmission sealing mechanism 5 is assembled on one side of the transmission box 2. The transmission sealing mechanism includes a transmission shaft 53, one end of which is located inside the transmission box 2, and the other end of which is located outside the transmission box 2. One end of the transmission shaft 53 is provided with the passive wheel 62, and the drive wheel 61 is connected to the passive wheel 62 through the transmission mechanism 4.

[0053] The transmission sealing mechanism 5 is used to block the penetration of water from the outside to the inside of the transmission box 2.

[0054] The transmission sealing mechanism 5 further includes a stepped sleeve 51, a first bearing 521, a sealing sleeve 54, a blocking sleeve 55, a second bearing 522 and an inner spacer sleeve 56.

[0055] The inner wall of the stepped sleeve 51 is provided with a first step 511 extending along the radial direction of the stepped sleeve 51. The first step 511 realizes the axial positioning of the inner side of the outer ring of the first bearing 521 and the outer side of the outer ring of the second bearing 522.

[0056] The first bearing 521 is provided as a double-row angular contact ball bearing, and is arranged inside the stepped sleeve 51 at the outer side of the first step 511. The inner side of the outer ring of the first bearing 521 abuts against the side wall of the first step 511. In this way, the first step 511 realizes the axial positioning of the inner side of the outer ring of the first bearing 521.

[0057] The second step 531 is arranged on the transmission shaft 53 near the outer side, the transmission shaft 53 is assembled into the stepped sleeve 51 from the outer side of the stepped sleeve 51, the transmission shaft 53 is assembled into the inner ring of the first bearing 521, and the inner ring of the first bearing 521 is abutted against the side wall of the second step 531. The axial position of the inner ring of the first bearing 521 is limited by the second step 531.

[0058] One end of the sealing sleeve 54 is located between the stepped sleeve 51 and the transmission shaft 53, the other end of the sealing sleeve 54 is assembled and connected to the outer side of the stepped sleeve 51 through the screw 513, the first static seal 571 is arranged between the sealing sleeve 54 and the stepped sleeve 51, and the outer side of the outer ring of the first bearing 521 is abutted against the end face of one end of the sealing sleeve 54. The axial position of the outer ring of the first bearing 521 is limited by the end face of one end of the sealing sleeve 54. The static seal between the sealing sleeve 54 and the stepped sleeve 51 is realized by the first static seal 571. The first static seal 571 is an O-ring.

[0059] One end of the sealing sleeve 54 is provided with the third step 541.

[0060] One end of the sealing sleeve 54 is provided with the third step 541.

[0061] The second bearing 522 is a deep groove ball bearing, the second bearing 522 is arranged in the stepped sleeve 51 and located at the inner side of the first step 511, and the outer side of the outer ring of the second bearing 522 is abutted against the side wall of the first step 511. Thus, the axial position of the outer side of the outer ring of the second bearing 522 is limited by the first step 511.

[0062] The inner spacer sleeve 56 is assembled on the transmission shaft 53, the transmission shaft 53 is assembled into the inner ring of the second bearing 522, the inner spacer sleeve 56 is located between the first bearing 521 and the second bearing 522, the inner side of the inner ring of the first bearing 521 is abutted against the outer end face of the inner spacer sleeve 56, and the outer side of the inner ring of the second bearing 522 is abutted against the inner end face of the inner spacer sleeve 56. The axial position of the inner side of the inner ring of the first bearing 521 and the outer side of the inner ring of the second bearing 522 is limited by the inner spacer sleeve 56.

[0063] The space 59 for injecting lubricating grease is left between the inner spacer sleeve 56 and the first step 511, and the oil injection channel 591 is connected to the space 59.

[0064] The oil injection channel 591 can be located inside the transmission shaft 53, one end of the oil injection channel 591 communicates with the space 59, the other end of the oil injection channel 591 is located at the outer side end face of the transmission shaft 53, and the other end of the oil injection channel 591 is provided with a straight-through type pressure injection oil cup 592. In this way, without disassembling each component, the straight-through type pressure injection oil cup 592 can be used to inject lubricating grease into the space 59.

[0065] The space 59 is injected with lubricating grease, which is used to lubricate the first bearing 521 and the second bearing 522, and when a small amount of water penetrates to the position of the first bearing 521 at the dynamic sealing position, the lubricating grease can block the water from continuing to penetrate to the position of the second bearing 522. In addition, when the space 59 is filled with lubricating grease, the water that penetrates to the position of the first bearing 521 can be squeezed out of the dynamic sealing position by the lubricating grease.

[0066] The transmission shaft 53 is matched with the stepped sleeve 51 through the first bearing 521 and the second bearing 522, and the space 59 between the first bearing 521 and the second bearing 522 is injected with lubricating grease. The transmission shaft 53 is matched with the two bearings to make the stability of the rotating operation higher, and when the transmission shaft 53 is subjected to external load, the runout problem of the transmission shaft 53 can be effectively alleviated through the gap between the bearings and the oil resistance of the lubricating grease in the space 59.

[0067] The transmission sealing mechanism 5 is assembled with the transmission box body 2 and the wheel set assembly 7 in the following manner:

[0068] An assembly hole 21 is formed on one side of the transmission box body 2, and the transmission shaft 53 passes through the assembly hole 21.

[0069] The inner side of the stepped sleeve 51 is provided with a first assembly disc 5121, the first assembly disc 5121 is assembled with one side of the transmission box body 2, and a second static seal 572 is arranged between the first assembly disc 5121 and the transmission box body 2. Specifically, the second static seal 572 is arranged on the radial side of one end of the first assembly disc 5121, and the one end of the first assembly disc 5121 is located in the assembly hole of the transmission box body 2. The static seal between the first assembly disc 5121 and the assembly hole is realized through the second static seal 572. The second static seal 572 is an O-ring.

[0070] One end of the transmission shaft 53 is assembled with the driven wheel 62, and a limiting sleeve 8 is arranged between the driven wheel 62 and the second bearing 522. The one end face of the limiting sleeve 8 realizes the axial limiting of the outer side of the inner ring of the second bearing 522. In addition, the side wall of the transmission box body 2 realizes the axial limiting of the outer side of the outer ring of the second bearing 522.

[0071] The wheel set assembly 7 is arranged at the other end of the transmission shaft 53. Specifically, the other end of the transmission shaft 53 is provided with a second assembly disc 5122, and the second assembly disc 5122 is assembled with the wheel set assembly 7.

[0072] The passive wheel 62 in the transmission case 2 is assembled with one end of the transmission shaft 53, and the passive wheel 62 rotates to drive the transmission shaft 53 to rotate, and then drives the wheel set assembly 7 to rotate, so as to realize power transmission and drive the chassis to travel.

[0073] The wheel set assembly 7 in the embodiment includes a wheel hub 71 and a tire 72, and the tire 72 is assembled on the circumferential side of the wheel hub 71, and the second assembly disc 5122 is assembled with the wheel hub 71.

[0074] A drainage robot is provided with the amphibious chassis described above in the embodiment, and the water pump body 9 is arranged on the chassis. The chassis travels in water to drive the water pump body 9 to be in a waterlogged area, and the water pump body 9 performs a drainage operation.

[0075] So far, the embodiment has been described in detail in combination with the drawings. According to the above description, those skilled in the art should have a clear understanding of the amphibious chassis. The amphibious chassis can be applied to a drainage robot. When the robot performs a water operation, the transmission case 2 separates the driving motor 3, the driving wheel 61, the transmission mechanism 4, the passive wheel 62, and the like from water outside, and blocks water outside from penetrating into the transmission case 2 through the transmission sealing mechanism 5, so as to realize sealing of the transmission part of the chassis, so that the chassis can travel in water for a long time. In addition, the transmission sealing mechanism 5 can realize power transmission through the cooperation of the stepped sleeve 51, the first bearing 521, the second bearing 522, and the transmission shaft 53, and can realize static sealing and dynamic sealing under water through the cooperation of the stepped sleeve 51, the sealing sleeve 54, the blocking sleeve 55, the transmission shaft 53, the sealing element (the first static sealing element 571, the second static sealing element 572, and the dynamic sealing element 58), and the space 59 filled with lubricating grease. The transmission sealing mechanism 5 has a compact structure, a small diameter, and a small occupied assembly space.

[0076] The above-described specific embodiments further illustrate the purpose, technical solutions, and beneficial effects of the present application. It should be understood that the above-described specific embodiments are only for the specific embodiments of the present application and are not used to limit the present application. Any modification, equivalent replacement, improvement, and the like made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. An amphibious transport chassis, characterized in that: include: Chassis body; The transmission box is arranged on the chassis body; A driving motor is located inside the transmission housing; The output shaft of the driving motor is provided with a driving wheel, and the driving wheel is located inside the transmission housing; A transmission mechanism is located inside the transmission housing; A transmission sealing mechanism is assembled on one side of the transmission housing, the transmission sealing mechanism includes a transmission shaft, one end of the transmission shaft is located inside the transmission housing, the other end of the transmission shaft is located outside the transmission housing, a driven wheel is provided at one end of the transmission shaft, and the driving wheel is connected to the driven wheel through the power of the transmission mechanism; The transmission sealing mechanism is used to prevent external water from penetrating into the interior of the transmission housing; a wheel assembly, arranged at the other end of the transmission shaft; The transmission sealing mechanism further includes a stepped sleeve, a first bearing, a sealing sleeve, a blocking sleeve, a second bearing and an inner spacer sleeve; The inner wall of the stepped sleeve is provided with a first step, and the first step extends in the radial direction of the stepped sleeve; The first bearing is arranged inside the stepped sleeve at an outer side of the first step, and the inner side of the outer ring of the first bearing abuts against the side wall of the first step; A second step is provided on the transmission shaft, the transmission shaft is located inside the stepped sleeve, the transmission shaft is assembled with the inner ring of the first bearing, and the outer side of the inner ring of the first bearing abuts against the side wall of the second step; One end of the sealing sleeve is located between the stepped sleeve and the transmission shaft, the sealing sleeve is fitted and connected to the stepped sleeve, a first static seal is provided between the sealing sleeve and the stepped sleeve, and the outer side of the outer ring of the first bearing abuts against the end surface of one end of the sealing sleeve; A third step is provided at one end of the sealing sleeve; One end of the blocking sleeve is located between the sealing sleeve and the transmission shaft, the blocking sleeve is assembled and connected to the sealing sleeve, and a dynamic seal is provided between the end surface of one end of the blocking sleeve, the third step and the transmission shaft; The second bearing is arranged inside the stepped sleeve at an inner side of the first step, and the outer side of the outer ring of the second bearing abuts against the side wall of the first step; The inner spacer is assembled on the transmission shaft, the transmission shaft is assembled with the inner ring of the second bearing, the inner spacer is located between the first bearing and the second bearing, the inner side of the inner ring of the first bearing abuts against the outer end surface of the inner spacer, and the outer side of the inner ring of the second bearing abuts against the inner end surface of the inner spacer; A space for injecting grease is reserved between the inner spacer and the first step, and the space is connected to an oil injection channel; Grease is injected into the space. Firstly, it is used to lubricate the first bearing and the second bearing. Secondly, if a small amount of water penetrates into the first bearing, the grease can prevent the water from further penetrating into the second bearing. Thirdly, when the space is fully filled with grease, the water that has penetrated into the first bearing is squeezed out from the driven seal by the grease. A mounting hole is provided on one side of the transmission housing, and the transmission shaft passes through the mounting hole; A first assembly disk is provided on the inner side of the stepped sleeve, the first assembly disk is assembled to one side of the transmission housing, and a second static seal is provided between the first assembly disk and the transmission housing; The other end of the transmission shaft is provided with a second assembly disk, and the second assembly disk is assembled with the wheel assembly.

2. The amphibious transport chassis according to claim 1, characterized in that: The oil injection channel is located inside the transmission shaft, one end of the oil injection channel is connected to the space, the other end of the oil injection channel is located on the end surface of the transmission shaft, and a pressure oil injection cup is provided at the other end of the oil injection channel.

3. The amphibious transport chassis according to claim 1, characterized in that: The first static seal is configured as an O-ring.

4. The amphibious transport chassis according to claim 1, characterized in that: The second static seal is configured as an O-ring.

5. The amphibious transport chassis according to claim 1, characterized in that: The dynamic seal is configured as a shaft rotating seal ring.

6. The amphibious transport chassis according to any one of claims 1 to 5, characterized in that: The transmission mechanism is configured as a chain, and the driving wheel and the driven wheel are configured as sprockets.

7. The amphibious transport chassis according to claim 6, characterized in that: A chain tensioning mechanism is provided inside the transmission box, and the chain tensioning mechanism is used to tension the chain.

8. The amphibious transport chassis according to any one of claims 1 to 5, characterized in that: The drive motor is configured as a hydraulic motor.

9. A drainage robot, comprising the amphibious transport chassis according to any one of claims 1 to 8.

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