Movable cab

Abstract

The utility model discloses a movable cab which comprises a pair of movable beams which are arranged at the lower end of a crane movable platform in parallel left and right, a walking mechanism is arranged below the movable beams, the upper portion of the walking mechanism is connected with the movable beams in a left-right sliding mode, the cab is arranged on the lower portion of the walking mechanism, and a protruding platform is arranged at the lower end of the cab. A supporting shaft is arranged on the right portion of the protruding platform in a front-back penetrating mode, the supporting shaft is provided with an overhauling escalator in the radial direction, the overhauling escalator is rotationally connected with the protruding platform through the supporting shaft, and a positioning part is arranged on the lower portion of the overhauling escalator and used for adjusting and positioning the posture of the overhauling escalator. The traveling mechanism is arranged to drive the cab to move left and right, and the driving motor is arranged on the front side of each pair of pulley protective plates, so that the driving force of the pulleys and the moving beam is increased, and the phenomenon of movement dislocation caused by slipping of a single pulley is avoided.

Description

Technical Field

[0001] This utility model relates to the field of crane technology, and in particular to a mobile driver's cab. Background Technology

[0002] With the increasing demands of society, lifting equipment is developing towards larger tonnage and larger span. As the lifting range increases, operators need a better field of vision to ensure the safety and precision of lifting operations.

[0003] Existing driver's cabs are typically fixed and located to one side of the lifting point, creating blind spots for the driver or requiring multiple lifting and positioning operations. This results in low work efficiency and increases the risk of accidents. To provide better visibility, some manufacturers have adopted a solution of moving the driver's cab's fixed point forward, extending the cab's fixed position as close as possible to the maximum lifting point. However, this increases the risk of interference between the driver's cab and fixed dock facilities or mobile equipment on the shore.

[0004] The applicant has disclosed a mobile driver's cab (CN 211712471 U), which includes an upper frame and a driver's cab. The driver's cab is connected to a box girder via several flange plates and is fixed with bolts. The box girder is connected to the upper frame via several flange plates and is fixed with bolts. A rubber pad is provided between the flange plates and the box girder. The driver's cab is located on one side of the upper frame, outside the main beam, and below the bottom plate of the main beam. An inclined ladder is provided inside the box girder. The upper frame is connected to the box girder via two support rods. The operator of this utility model is always positioned above the suspended load and can directly see the suspended load, eliminating the visual requirements of the operator from a distance and the influence of obstacles, and avoiding the operator operating the equipment by feel.

[0005] The above application has the following problems:

[0006] 1. Observers cannot make observations and positioning through the mobile driver's cab, which easily leads to blind spots;

[0007] 2. The inability to adjust the size of the driver's cab further increases the risk of interference between the driver's cab and fixed facilities at the dock or mobile equipment on the shore. Utility Model Content

[0008] The purpose of this utility model is to provide a mobile driver's cab, which allows operators to observe crane operations from multiple angles by moving horizontally left and right, thus improving the accuracy of lifting operations; it also allows the maintenance ladder to change its posture, shortening the length of the driver's cab in the left and right direction, and further increasing the mobility of the driver's cab.

[0009] The present invention adopts the following technical solution:

[0010] A mobile operator's cab includes a pair of moving beams arranged parallel to each other on the left and right sides at the lower end of a crane moving platform. A traveling mechanism is arranged below the moving beams, and the upper part of the traveling mechanism is slidably connected to the moving beams on the left and right. An operator's cab is arranged at the lower part of the traveling mechanism. A protruding platform is arranged at the lower end of the operator's cab. A support shaft is arranged along the front and rear of the right side of the protruding platform. A maintenance ladder is arranged radially along the support shaft. The maintenance ladder is rotatably connected to the protruding platform through the support shaft. A positioning part is arranged at the lower part of the maintenance ladder. The positioning part is used to adjust and position the posture of the maintenance ladder.

[0011] Furthermore, the protruding platform has a clearance groove in the middle and the support shaft passes through the front and rear inner sides of the clearance groove. The maintenance ladder includes a pair of support rods arranged in parallel front and rear. One of the support rods is located behind the protruding platform and is rotatably connected to the rear end of the support shaft. The lower part of the front support rod is located in the clearance groove and is rotatably connected to the middle of the support shaft.

[0012] Furthermore, several foot pedals are evenly arranged axially between the two support rods, and the front and rear ends of each foot pedal are fixedly connected to the support rod 9 on the corresponding side, and the lower end of the rear support rod is connected to the positioning part.

[0013] Furthermore, a sliding groove is provided in the middle of the protruding platform located on the left side of the mobile driver's cab; the upper part of the positioning part is provided with the sliding groove, and the lower part is connected to the rear support rod.

[0014] Furthermore, the positioning part includes a long rod fixedly connected to the rear support rod; the long rod extends axially along the support rod to below the protruding platform and is integrally formed with the support rod; a horizontal rod passes through the long rod radially, the horizontal rod is rotatably connected to the long rod, a vertical rod is fixedly passed through the horizontal rod radially, a slider passes through the upper part of the vertical rod, the vertical rod and the slider are slidably connected vertically, and the slider is slidably positioned in a matching translational through groove.

[0015] Furthermore, the left end of the slider is provided with an assist mechanism, which includes a first lifting lug fixedly disposed on the left side of the translational channel. A first rotating shaft passes through the middle of the first lifting lug along the front and back. The front and back ends of the first rotating shaft are respectively rotatably connected to a first driving rod. The two first driving rods are at a set angle, and their outer ends are arranged vertically. A second lifting lug is fixedly disposed on the left end of the slider. A second rotating shaft passes through the middle of the second lifting lug along the front and back. The front and back ends of the second rotating shaft are respectively rotatably connected to a second driving rod. The two second driving rods are at a set angle, and their outer ends are arranged vertically. The outer ends of the first driving rod at the front end and the second driving rod at the front end are respectively provided with a third rotating shaft and a fourth rotating shaft. The outer end of the first driving rod at the front end is rotatably connected to the outer end of the second driving rod at the rear end through the third rotating shaft. The outer end of the first driving rod at the rear end is rotatably connected to the outer end of the second driving rod at the front end through the fourth rotating shaft.

[0016] Furthermore, the rear ends of the third and fourth rotating shafts are respectively fixedly provided with driving blocks, each driving block having a vertical threaded through hole, and the upper and lower threaded through holes are coaxially arranged; a threaded rod is also vertically arranged in the middle of the protruding platform, and the middle part of the threaded rod is rotatably connected to the protruding platform, and the two threaded through holes are threadedly connected to the upper and lower parts of the threaded rod; the threads of the upper and lower parts of the threaded rod have opposite directions.

[0017] Furthermore, a turntable is fixedly installed at the upper end of the threaded rod.

[0018] Furthermore, each movable beam has horizontal grooves on both its front and rear sides, and the cross-section of the movable beam is I-shaped.

[0019] Furthermore, the traveling mechanism includes a rectangular support frame, which includes horizontal braces arranged parallel to each other on the left and right. Pulley guards are hinged to the front and rear sides of the horizontal braces located at the four corners of the support frame. Two pulleys are rotatably connected to the inner side of each pulley guard. The lower side of each pulley is tightly against the inner wall of the lower side of the corresponding horizontal slide groove. A driven gear is provided between the pulley in the rear horizontal slide groove and the rear pulley guard. The driven gear is coaxially fixed to the corresponding pulley and meshes with a driving gear. A drive motor output shaft is coaxially fixed to the driving gear, and the drive motor is fixedly mounted on the front end face of the corresponding pulley guard.

[0020] I. This utility model drives the driver's cab to move left and right by setting up a traveling mechanism, and increases the driving force between the pulleys and the moving beam by setting a drive motor on the front side of each pair of pulley guard plates, thus avoiding the phenomenon of movement misalignment caused by slippage of a single pulley.

[0021] Second, by setting up an assist mechanism, the operator uses a threaded rod to drive the slider to move left and right, thereby realizing the rotation of the maintenance escalator, which reduces the difficulty of operation for the operator and improves the operator's work efficiency. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the crane of this utility model;

[0023] Figure 2 This is a schematic diagram of the clearance groove of this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the vertical rod of this utility model;

[0025] Figure 4 This is a schematic diagram of the slider of this utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the second drive rod of this utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the support rod of this utility model;

[0028] Figure 7 This is a schematic diagram of the drive motor of this utility model;

[0029] Figure 8 This is a schematic diagram of the structure of the horizontal slide groove of this utility model.

[0030] In the diagram, 1. Crane moving platform; 2. Moving beam; 3. Traveling mechanism; 4. Operator's cab; 5. Crane; 6. Protruding platform; 7. Support shaft; 8. Maintenance ladder; 9. Support rod; 10. Clearance slot; 11. Foot pedal; 12. Translation slot; 13. Long rod; 14. Horizontal bar; 15. Vertical bar; 16. Sliding block; 17. First lifting lug; 18. First rotating shaft; 19. First drive rod; 20. Second lifting lug; 21. Second rotating shaft; 22. Second drive rod; 23. Third rotating shaft; 24. Fourth rotating shaft; 25. Drive block; 26. Threaded rod; 27. Horizontal slide; 28. Support frame; 29. ​​Cross brace; 30. Pulley guard plate; 31. Pulley; 32. Driven gear; 33. Drive gear; 34. Drive motor; 35. Turntable; 36. Guardrail. Detailed Implementation

[0031] The present invention will now be described in detail with reference to the accompanying drawings and embodiments:

[0032] like Figures 1 to 8As shown, the mobile driver's cab of this utility model includes a crane 5 mounted on the upper end of a crane mobile platform 1 and a pair of moving beams 2 mounted parallel to each other on the left and right sides of the lower end of the crane mobile platform 1. A traveling mechanism 3 is mounted below the moving beams 2. The upper part of the traveling mechanism 3 is slidably connected to the moving beams 2 on the left and right. A driver's cab 4 is mounted below the traveling mechanism 3. A protruding platform 6 is mounted at the lower end of the driver's cab 4. A support shaft 7 is passed through the right side of the protruding platform 6 along the front and back. A maintenance ladder 8 is mounted radially on the support shaft 7. The maintenance ladder 8 is rotatably connected to the protruding platform 6 through the support shaft 7. A positioning part is mounted at the lower part of the maintenance ladder 8. The positioning part is used to adjust and position the posture of the maintenance ladder 8.

[0033] During operation, after the crane 5 lifts the load to the set height, the operator in the cab 4 needs to adjust the position of the crane 5 left and right to move it above the set position. In order to facilitate the operator's observation and judgment of the lifting point position of the crane 5, the cab 4 needs to move left and right along the moving beam 2 to minimize blind spots for the operator, thereby more accurately operating the movement of the crane 5 and improving the accuracy of lifting and moving the load.

[0034] When crane 5 needs inspection or maintenance, the operator in the driver's cab 4 moves along the protruding platform 6 to the lower part of the maintenance ladder 8, and then climbs up the maintenance ladder 8 to the upper side of the crane moving platform 1 to inspect or maintain crane 5, such as applying wire oil and grease.

[0035] Since the operator's cab 4 is located on the lower left side of the crane 5, and the maintenance ladder 8 is tilted to the right, when the operator's cab 4 moves to the right, the tilted maintenance ladder 8 shortens the distance the operator's cab 4 moves to the right. The operator needs to adjust the posture of the maintenance ladder 8 to make it as close to vertical as possible, so as to make room for the movement of the maintenance ladder 8 and to better observe the dynamics of the crane 5.

[0036] In this embodiment, a clearance groove 10 is provided in the middle of the protruding platform 6, and the support shaft 7 passes through the front and rear inner sides of the clearance groove 10. The maintenance ladder 8 includes a pair of support rods 9 arranged in parallel front and rear. The rear support rod 9 is located on the rear side of the protruding platform 6 and is rotatably connected to the rear end of the support shaft 7. The lower part of the front support rod 9 is located in the clearance groove 10 and is rotatably connected to the middle part of the support shaft 7. In order to facilitate the operator to move upward along the support rod 9, a number of foot pedals 11 are evenly arranged axially between the two support rods 9. The front and rear ends of each foot pedal 11 are fixedly connected to the support rod 9 on the corresponding side, and the lower end of the rear support rod 9 is connected to the positioning part.

[0037] In this embodiment, a translational slot 12 is also provided in the middle of the protruding platform 6 located on the left side of the mobile driver's cab 4; the upper part of the positioning part passes through the translational slot 12, and the lower part is connected to the rear support rod 9; the positioning part includes a long rod 13 fixedly connected to the rear support rod 9; the long rod 13 extends axially along the support rod 9 to the bottom of the protruding platform 6, and is integrally set with the support rod 9; a horizontal rod 14 passes through the long rod 13 radially, the horizontal rod 14 is rotatably connected to the long rod 13, a vertical rod 15 is fixedly passed through the horizontal rod 14 radially, a slider 16 passes through the upper part of the vertical rod 15, the vertical rod 15 and the slider 16 are slidably connected up and down, and the slider 16 is slidably set in the corresponding translational slot 12;

[0038] Before the maintenance ladder 8 needs to be repaired, the slider 16 moves to the left, the slider 16 drives the vertical rod 15 to move to the left, and the horizontal rod 14, which is fixedly connected to the lower end of the vertical rod 15, moves to the left. The front end of the horizontal rod 14 rotates clockwise with the long rod 13 as the radius and the support shaft 7 as the fulcrum. The maintenance ladder 8, which is fixedly connected to the long rod 13, rotates clockwise to the set position. The operator climbs up the maintenance ladder 8 to the upper side of the crane moving platform 1 to repair or maintain the crane 5.

[0039] Before the mobile operator's cab 4 moves, when the slider 16 moves to the right, the slider 16 drives the vertical rod 15 to move to the right, and the horizontal rod 14, which is fixedly connected to the lower end of the vertical rod 15, moves to the right. The front end of the horizontal rod 14 rotates counterclockwise with the long rod 13 as the radius and the support shaft 7 as the fulcrum, and the maintenance ladder 8, which is fixedly connected to the long rod 13, rotates counterclockwise. This makes the maintenance ladder 8 almost vertical, effectively reducing the left and right span of the mobile operator's cab 4, and making room for the movement of the maintenance ladder 8 so as to better observe the dynamics of the crane 5.

[0040] A booster mechanism is provided at the left end of the slider 16. The booster mechanism includes a first lifting lug 17 fixedly installed on the left side of the translation slot 12. A first rotating shaft 18 is inserted through the middle of the first lifting lug 17 along the front and back. A first driving rod 19 is rotatably connected to the front and back ends of the first rotating shaft 18. The two first driving rods 19 are at a set angle, and their outer ends are set. A second lifting lug 20 is fixedly installed on the left end of the slider 16. A second rotating shaft 21 is inserted through the middle of the second lifting lug 20 along the front and back. A second driving rod 22 is rotatably connected to the front and back ends of the second rotating shaft 21. The drive rod 22 is at a set angle, and the outer ends of the two second drive rods 22 are arranged vertically. The outer ends of the first drive rod 19 at the front end and the second drive rod 22 at the front end are respectively provided with a third rotating shaft 23 and a fourth rotating shaft 24. The outer end of the first drive rod 19 at the front end is rotatably connected to the outer end of the second drive rod 22 at the rear end through the third rotating shaft 23. The fourth rotating shaft 24 at the outer end of the first drive rod 19 at the rear end is rotatably connected to the outer end of the second drive rod 22 at the front end. The two first drive rods 19 and the two second drive rods 22 form a rhombus that is rotatably connected end to end.

[0041] When the second rotating shaft 21 moves to the left and closer to the first rotating shaft 18, the second rotating shaft 21 drives the slider 16 to move to the left; when the second rotating shaft 21 moves to the right and away from the first rotating shaft 18, the slider 16 moves to the right.

[0042] Since the second rotating shaft 21 can be controlled to move left and right by driving the third rotating shaft 23 and the fourth rotating shaft 24 to move relative to each other and towards each other, in order to facilitate the operation of the operator, in this embodiment, the rear ends of the third rotating shaft 23 and the fourth rotating shaft 24 are respectively fixedly provided with driving blocks 25, each driving block 25 having a vertical threaded through hole, and the upper and lower threaded through holes are coaxially arranged; a threaded rod 26 is also vertically arranged in the middle of the protruding platform 6, and the middle part of the threaded rod 26 is rotatably connected to the protruding platform 6, and the two threaded through holes are threadedly connected to the upper and lower parts of the threaded rod 26; the threads of the upper and lower parts of the threaded rod 26 have opposite directions of rotation;

[0043] When in use, rotate the threaded rod 26. When the third rotating shaft 23 and the fourth rotating shaft 24 move relative to each other, the third rotating shaft 23 and the fourth rotating shaft 24 gradually approach each other, and the second rotating shaft 21 moves to the right away from the first rotating shaft 18.

[0044] When the threaded rod 26 is rotated in the opposite direction, the third rotating shaft 23 and the fourth rotating shaft 24 move towards each other, and the second rotating shaft 21 drives the slider 16 to move to the left and approach the first rotating shaft 18.

[0045] In this embodiment, a turntable 35 is fixedly installed at the upper end of the threaded rod 26.

[0046] In this embodiment, each movable beam 2 has horizontal grooves 27 on both its front and rear sides, and the cross-section of the movable beam 2 is "I" shaped. The traveling mechanism 3 includes a rectangular support frame 28, which includes horizontal braces 29 arranged in parallel on the left and right sides. The horizontal braces 29 located at the four corners of the support frame 28 are hinged to pulley guard plates 30 on both the front and rear sides. Each pulley guard plate 30 has two pulleys 31 rotatably connected to its inner side. The lower side of each pulley 31 is in close contact with the lower inner wall of the corresponding horizontal groove 27. A driven gear 32 is provided between the pulley 31 in the rear horizontal groove 27 and the rear pulley guard plate 30. The driven gear 32 is coaxially fixed with the corresponding pulley 31, and the driven gear 32 meshes with a driving gear 33. The output shaft of the drive motor 34 is coaxially fixed to the driving gear 33, and the drive motor 34 is fixedly installed on the rear end face of the corresponding pulley guard plate 30.

[0047] To ensure the safety of operators, in this embodiment, guardrails 36 are also fixed to the rear side of the maintenance escalator 8 and the protruding platform 6.

[0048] During operation, before the operator needs to adjust the position of the driver's cab 4 left or right, the operator uses the turntable 35 to rotate the threaded rod 26. The drive block 25, which is threadedly connected to the threaded rod 26, moves towards each other, that is, the third rotating shaft 23 and the fourth rotating shaft 24 move towards each other. The first rotating shaft 18 and the second rotating shaft 21 move relative to each other. The slider 16 moves to the right, and the slider 16 drives the vertical rod 15 to move to the right. The vertical rod 15 drives the long rod 13, which is connected to the horizontal rod 14, to rotate counterclockwise, that is, the maintenance ladder 8 rotates counterclockwise to a near-vertical state, making more space for the left and right movement of the driver's cab 4. The drive motor 34 works at the same time and drives the drive gear 33. The driven gear 32, which meshes with the drive gear 33, rotates, that is, the pulley 31 rotates. The pulley 31 drives the lower support frame 28 to move left and right, and the driver's cab 4, which is connected to the support frame 28, moves left and right to observe the position of the heavy object under the crane 5.

[0049] When crane 5 needs inspection or maintenance, the operator uses turntable 35 to rotate threaded rod 26 in the opposite direction. Drive block 25, which is threadedly connected to threaded rod 26, moves relative to each other, that is, third rotating shaft 23 and fourth rotating shaft 24 move relative to each other. First rotating shaft 18 and second rotating shaft 21 move towards each other. Slider 16 moves to the left. Slider 16 drives vertical rod 15 to move to the left. Vertical rod 15 drives long rod 13, which is connected to horizontal rod 14, to rotate clockwise, that is, maintenance ladder 8 rotates clockwise. This causes maintenance ladder 8 to tilt at a set angle. The operator climbs up maintenance ladder 8 to the upper side of crane moving platform 1 to inspect or maintain crane 5.

Claims

1. A mobile driver's cab, comprising a pair of movable beams arranged parallel to each other on the left and right sides at the lower end of a crane mobile platform, characterized in that: A traveling mechanism is installed below the moving beam. The upper part of the traveling mechanism is slidably connected to the moving beam from left to right. A driver's cab is installed at the lower part of the traveling mechanism. A protruding platform is installed at the lower end of the driver's cab. A support shaft is installed along the front and rear of the right side of the protruding platform. A maintenance ladder is installed radially along the support shaft. The maintenance ladder is rotatably connected to the protruding platform through the support shaft. A positioning part is installed at the lower part of the maintenance ladder. The positioning part is used to adjust and position the posture of the maintenance ladder.

2. The mobile driver's cab according to claim 1, characterized in that: The protruding platform has a clearance groove in the middle, and the support shaft passes through the front and rear inner sides of the clearance groove. The maintenance ladder includes a pair of support rods arranged in parallel front and rear. One of the support rods is located behind the protruding platform and is rotatably connected to the rear end of the support shaft. The lower part of the front support rod is located in the clearance groove and is rotatably connected to the middle of the support shaft.

3. The mobile driver's cab according to claim 2, characterized in that: Several foot pedals are evenly arranged axially between the two support rods. The front and rear ends of each foot pedal are fixedly connected to the support rod on the corresponding side, and the lower end of the rear support rod is connected to the positioning part.

4. The mobile driver's cab according to claim 2, characterized in that: The protruding platform located on the left side of the mobile driver's cab is also provided with a translation slot in the middle; the upper part of the positioning part is provided with the translation slot, and the lower part is connected to the rear support rod.

5. The mobile driver's cab according to claim 4, characterized in that: The positioning part includes a long rod fixedly connected to the rear support rod; the long rod extends axially along the support rod to below the protruding platform and is integrally set with the support rod; a horizontal rod passes through the long rod radially, the horizontal rod is rotatably connected to the long rod, a vertical rod is fixedly passed through the horizontal rod radially, a slider passes through the upper part of the vertical rod, the vertical rod and the slider are slidably connected up and down, and the slider is slidably set in a matching translational through groove.

6. The mobile driver's cab according to claim 5, characterized in that: The slider is provided with an assist mechanism at its left end. The assist mechanism includes a first lifting lug fixedly installed on the left side of the translational channel. A first rotating shaft passes through the middle of the first lifting lug along the front and back. A first driving rod is rotatably connected to the front and back ends of the first rotating shaft. The two first driving rods are at a set angle, and their outer ends are positioned vertically. A second lifting lug is fixed to the left end of the slider. A second rotating shaft passes through the middle of the second lifting lug along the front and back. A second driving rod is rotatably connected to the front and back ends of the second rotating shaft. The two second driving rods are at a set angle, and their outer ends are positioned vertically. A third rotating shaft and a fourth rotating shaft pass through the outer ends of the first driving rod at the front end and the second driving rod at the front end, respectively. The outer end of the first driving rod at the front end is rotatably connected to the outer end of the second driving rod at the rear end via the third rotating shaft. The fourth rotating shaft at the outer end of the first driving rod at the rear end is rotatably connected to the outer end of the second driving rod at the front end.

7. The mobile driver's cab according to claim 6, characterized in that: The third and fourth rotating shafts are respectively fixedly equipped with driving blocks at their rear ends. Each driving block has a vertical threaded through hole, and the upper and lower threaded through holes are coaxially arranged. A threaded rod is also vertically arranged in the middle of the protruding platform, and the middle part of the threaded rod is rotatably connected to the protruding platform. The two threaded through holes are threadedly connected to the upper and lower parts of the threaded rod. The threads of the upper and lower parts of the threaded rod have opposite directions.

8. The mobile driver's cab according to claim 7, characterized in that: A turntable is fixedly installed at the upper end of the threaded rod.

9. The mobile driver's cab according to claim 1, characterized in that: Each of the movable beams has horizontal grooves on both its front and rear sides, and the cross-section of the movable beam is "I" shaped.

10. The mobile driver's cab according to claim 9, characterized in that: The traveling mechanism includes a rectangular support frame, which includes horizontal braces arranged parallel to each other on the left and right. At the four corners of the support frame, pulley guards are hinged to both the front and rear sides of the horizontal braces. Two pulleys are rotatably connected to the inner side of each pulley. The lower side of each pulley is tightly against the inner wall of the corresponding horizontal slide groove. A driven gear is provided between the pulley in the rear horizontal slide groove and the rear pulley guard. The driven gear is coaxially fixed to the corresponding pulley and meshes with a driving gear. A drive motor output shaft is coaxially fixed to the driving gear, and the drive motor is fixedly mounted on the rear end face of the corresponding pulley guard.

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