Liftable gantry crane
By introducing lifting and moving units into the gantry crane and utilizing a dual-shaft motor and worm gear structure, the problems of narrow applicability and swaying of the crane are solved, enabling height adjustment and stable movement of the hook, thus improving safety and applicability.
Patent Information
- Application Number
- CN202520182534.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-06
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-02-06
AI Technical Summary
Existing gantry cranes lack lifting capabilities, their maximum lifting capacity cannot be varied, their applicable range is narrow, and they are prone to displacement and swaying during movement, posing safety hazards.
A liftable gantry crane including a lifting unit and a moving unit was designed. The lifting of the hook is achieved by driving the threaded rod with a dual-axis motor. The position of the crane is stabilized by a worm gear structure and a hydraulic system, so as to achieve height adjustment and stable movement of the hook.
The adjustable hook height expands its applicability, enabling it to work in low-ceilinged spaces and maintain stability during lifting, thus avoiding swaying and safety hazards.
Smart Images
Figure CN223674182U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to gantry crane technology field especially relates to a liftable gantry crane. BACKGROUND
[0002] The gantry crane is a deformation of the bridge crane, the gantry crane is commonly known as gantry crane, and the gantery crane is a pictographic expression of the portal crane. In fact, it is the portal crane. The gantry crane is generally used for project installation, such as large equipment, but requires a wide site. The gantry crane can be used for suspension rail. The gantry rail is a special railway track. It can suspend the gantry crane at both ends. This structure enables the gantry crane to pass through the railway track from one end to the other end.
[0003] The existing gantry crane generally does not have a lifting function. The maximum range of lifting cannot be changed. Therefore, the application range is relatively narrow. When moving, manpower is needed to push. Only the brake function of the universal wheel is used for positioning. The brake pad slips during the lifting process. The gantry crane is easy to displace, which causes shaking when lifting and easily causes accidents. UTILITY MODEL CONTENT
[0004] The utility model discloses a liftable gantry crane, which aims to solve the technical problem that the maximum range of lifting cannot be changed, cannot enter a lower space for work, and therefore the application range is relatively narrow.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:
[0006] A liftable gantry crane comprises a lifting unit and a moving unit.
[0007] The lifting unit comprises a gantry hook, a gantry top plate is fixedly installed at the top of the gantry hook, a supporting inclined plate is fixedly installed at the bottom of the gantry top plate, a cylinder is fixedly installed at the bottom of the gantry top plate, a threaded rod is fixedly installed at the bottom of the cylinder, a threaded sleeve is screwedly installed in the threaded rod, and a double-shaft motor output end is fixedly installed at the bottom of the threaded sleeve.
[0008] The moving unit comprises a shell, a worm is rotatably installed in the shell, a worm wheel is meshedly installed on the outer wall of the worm, a ratchet wheel is arranged in the worm wheel, the ratchet wheel of the worm wheel is fixedly installed on the outer wall of the rotating rod of the moving wheel, a bearing is rotatably installed on the outer wall of the rotating rod, a damping cylinder is fixedly installed at the top of the bearing, a damping spring is sleeved on the outer wall of the damping cylinder, and a hydraulic cylinder is fixedly installed at the top of the damping cylinder.
[0009] In a preferred scheme, the double-shaft motor is fixedly installed on the inner wall of the shell, and the threaded sleeve is rotatably installed in the shell.
[0010] In a preferred scheme, the support inclined plate is fixedly installed on the cylinder at the other end away from the gantry top plate, and the fixed end of the hydraulic cylinder is fixedly installed on the top of the shell.
[0011] In a preferred scheme, a through-hole sliding groove is formed in the shell, and the rotating rod of the moving wheel is slidingly installed in the shell through the through-hole sliding groove.
[0012] In a preferred scheme, one end of the damping spring is fixedly installed on the top of the bearing, and the other end of the damping spring is fixedly installed on the bottom of the hydraulic cylinder.
[0013] In a preferred scheme, the damping cylinder is filled with damping oil, and the top of the worm is fixedly installed on the output shaft of the double-shaft motor.
[0014] As can be seen from the above, the lifting gantry has the following technical effects.
[0015] Firstly, when the lifting device is used, the output shaft of the double-shaft motor drives the threaded sleeve to rotate, thereby driving the threaded rod and the cylinder to move upwards, so as to lift or lower the gantry hook, thereby adjusting the maximum lifting range of the gantry hook, and enabling the gantry to enter a low space, so as to adapt to more working environments.
[0016] Secondly, the output shaft of the double-shaft motor drives the worm to rotate, thereby driving the worm gear to rotate, and when the worm gear rotates in the forward direction, the internal ratchet limit will drive the rotating rod to rotate, and at the same time, the moving wheel is driven to rotate, thereby driving the gantry hook to move, and after the device is moved to a specified position, the hydraulic cylinder is used to pull the bearing upwards, so that the worm gear moves upwards, and when the worm gear moves upwards, it will rotate in the opposite direction under the cooperation of the worm, at this time, the ratchet will not block the rotation of the worm gear, the moving wheel is retracted, the shell is in contact with the ground, thereby stabilizing the position of the device, and the gantry is more stable during lifting. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 The utility model provides a front view structure schematic diagram.
[0018] Figure 2 The utility model provides a front view structure schematic diagram. Figure 1 The structure schematic diagram after removing part and rotating a certain angle.
[0019] Figure 3 The utility model provides a front view structure schematic diagram. Figure 2 The structure schematic diagram of A place of enlargement in the middle.
[0020] Figure 4 The utility model provides a front view structure schematic diagram.
[0021] In the drawings: 100, lifting unit; 200, moving unit; 101, gantry hook; 102, gantry top plate; 103, support inclined plate; 104, cylinder; 105, threaded rod; 106, threaded sleeve; 107, double-shaft motor; 201, shell; 202, moving wheel; 203, worm; 204, worm gear; 205, bearing; 206, damping cylinder; 207, shock-absorbing spring; 208, hydraulic cylinder. DETAILED DESCRIPTION
[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments.
[0023] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" 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 a limitation on the present application.
[0024] Reference Figures 1-4 A liftable gantry crane, comprising a lifting unit 100 and a moving unit 200:
[0025] The lifting unit 100 comprises a gantry hook 101, the gantry hook 101 is fixedly installed at the top of the gantry top plate 102, the gantry top plate 102 is fixedly installed at the bottom of the support inclined plate 103, the support inclined plate 103 can provide auxiliary support force to avoid deformation of the cylinder 104, the gantry top plate 102 is fixedly installed at the bottom of the cylinder 104, the cylinder 104 is fixedly installed at the bottom of the threaded rod 105, the threaded rod 105 is internally screwed with the threaded sleeve 106, the threaded sleeve 106 is rotated to drive the threaded rod 105 to move up and down, thereby providing lifting function, the threaded sleeve 106 is fixedly installed at the bottom of the double-shaft motor 107 output end;
[0026] The mobile unit 200 comprises a shell 201, a worm 203 is rotatably installed inside the shell 201, a worm wheel 204 is installed on the outer wall of the worm 203 in engagement, a ratchet wheel is arranged inside the worm wheel 204, the ratchet wheel of the worm wheel 204 is fixedly installed on the rotating rod of the mobile wheel 202, the ratchet teeth of the ratchet wheel are fixedly installed on the worm wheel 204, the ratchet wheel is fixedly installed on the rotating rod, the arrangement of the ratchet wheel enables the worm wheel 204 to drive the rotating rod to rotate in the forward direction and to rotate by itself in the reverse direction, which is not shown in the existing structure diagram, the rotating rod is rotatably installed on the outer wall of the bearing 205, the damping cylinder 206 is fixedly installed on the top of the bearing 205, the damping spring 207 is sleeved on the outer wall of the damping cylinder 206, and the hydraulic cylinder 208 is fixedly installed on the top of the damping cylinder 206.
[0027] In the embodiment, the gantry hook 101 can be lifted or lowered in height, so that the maximum lifting range of the gantry hook 101 can be adjusted, and the gantry can enter a low space, so that more working environments can be adapted. The mobile wheel 202 is retracted by 108, the shell 201 is in contact with the ground, so that the position of the device is stable, and the gantry is more stable during lifting.
[0028] In a preferred embodiment, the double-shaft motor 107 is fixedly installed on the inner wall of the shell 201, and the threaded sleeve 106 is rotatably installed in the shell 201.
[0029] In the embodiment, the position of the double-shaft motor 107 is stabilized to avoid rotation of the double-shaft motor 107 during operation.
[0030] In a preferred embodiment, the other end of the supporting inclined plate 103 away from the gantry top plate 102 is fixedly installed on the cylinder 104, and the fixed end of the hydraulic cylinder 208 is fixedly installed on the top of the shell 201.
[0031] In the embodiment, the supporting inclined plate 103 provides auxiliary supporting force to avoid deformation of the cylinder 104.
[0032] In a preferred embodiment, a through-hole sliding groove is formed in the shell 201, and the rotating rod of the mobile wheel 202 is slidably installed in the shell 201 through the through-hole sliding groove.
[0033] In the embodiment, the rotating rod of the mobile wheel 202 can slide up and down through the through-hole sliding groove of the shell 201.
[0034] In a preferred embodiment, one end of the damping spring 207 is fixedly installed on the top of the bearing 205, and the other end of the damping spring 207 is fixedly installed on the bottom of the hydraulic cylinder 208.
[0035] In the embodiment, the two ends of the damping spring 207 are stabilized to stabilize the rebound direction of the damping spring 207 and avoid deformation of the damping spring 207.
[0036] In a preferred embodiment, the damping cylinder 206 is filled with damping oil, and the top of the worm 203 is fixedly installed with the bottom output shaft of the double-shaft motor 107.
[0037] In this embodiment, the damping oil can provide adhesion to form a damping effect to realize damping of the moving wheel 202 in cooperation with the damping spring 207 by driving the worm 203 to rotate by the output shaft at the bottom of the double-shaft motor 107.
[0038] Working principle: when in use, first, when lifting the device, the threaded sleeve 106 is driven to rotate by the top output shaft of the double-shaft motor 107, thereby driving the threaded rod 105 and the cylinder 104 to move upwards, thereby lifting the gantry hook 101, and the height of the gantry hook 101 can be raised or lowered, so as to adjust the maximum lifting range of the gantry hook 101, so that the gantry can enter a low space, thereby adapting to more working environments.
[0039] The worm 203 is driven to rotate by the output shaft at the bottom of the double-shaft motor 107, thereby driving the worm gear 204 to rotate, and when the worm gear 204 rotates in the forward direction, the internal ratchet limit will drive the rotating rod to rotate, and at the same time drive the moving wheel 202 to rotate, thereby driving the gantry hook 101 to move, after the device is moved to a specified position, the bearing 205 is pulled upwards by the hydraulic cylinder 208, so that the worm gear 204 moves upwards, and when the worm gear 204 moves upwards, it will rotate in the opposite direction under the cooperation of the worm 203, at this time the ratchet will not block the rotation of the worm gear 204, and the moving wheel 202 is retracted by 108, the outer shell 201 is in contact with the ground, thereby stabilizing the position of the device.
[0040] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Substitution can be substitution of part of the structure, device, method step, or complete technical solution. According to the technical solution and the inventive concept of the present application, equivalent substitution or change should be covered within the protection scope of the present application.
Claims
1. A liftable gantry crane, comprising a lifting unit (100) and a moving unit (200), characterized in that: the lifting unit (100) comprises a gantry hook (101), a gantry top plate (102) is fixedly installed on the top of the gantry hook (101), a support inclined plate (103) is fixedly installed on the bottom of the gantry top plate (102), a cylinder (104) is fixedly installed on the bottom of the gantry top plate (102), a threaded rod (105) is fixedly installed on the bottom of the cylinder (104), a threaded sleeve (106) is internally screwed on the threaded rod (105), and a double-shaft motor (107) output end is fixedly installed on the bottom of the threaded sleeve (106); the moving unit (200) comprises a shell (201), a worm (203) is rotatably installed in the shell (201), a worm wheel (204) is meshingly installed on the outer wall of the worm (203), a ratchet is arranged in the worm wheel (204), the ratchet of the worm wheel (204) is fixedly installed on the outer wall of a rotating rod of a moving wheel (202), a bearing (205) is rotatably installed on the outer wall of the rotating rod, a damping cylinder (206) is fixedly installed on the top of the bearing (205), a shock-absorbing spring (207) is sleeved on the outer wall of the damping cylinder (206), and a hydraulic cylinder (208) is fixedly installed on the top of the damping cylinder (206).
2. The elevatable gantry cradle of claim 1, wherein, The double-shaft motor (107) is fixedly installed on the inner wall of the shell (201), and the threaded sleeve (106) is rotatably installed in the shell (201).
3. The elevatable gantry cradle of claim 1, wherein, The other end of the support inclined plate (103) away from the gantry top plate (102) is fixedly installed on the cylinder (104), and the fixed end of the hydraulic cylinder (208) is fixedly installed on the top of the shell (201).
4. The elevatable gantry cradle of claim 1, wherein, A through-hole sliding groove is formed in the shell (201), and the rotating rod of the moving wheel (202) is slidably installed in the shell (201) through the through-hole sliding groove.
5. The elevating gantry cradle of claim 1 wherein, One end of the shock-absorbing spring (207) is fixedly installed on the top of the bearing (205), and the other end of the shock-absorbing spring (207) is fixedly installed on the bottom of the hydraulic cylinder (208).
6. The elevating gantry yoke of claim 1 wherein, The damping cylinder (206) is filled with damping oil, and the top of the worm (203) is fixedly installed on the bottom output shaft of the double-shaft motor (107).