A cantilever tilt adjustment mechanism for a cantilever crane

Abstract

The utility model discloses a cantilever tilt adjustment mechanism for a cantilever crane, belonging to the technical field of crane cantilever, comprising: a column, one side of the column is fixedly connected with a fixed plate, and the top of the column is fixedly installed with a rotating frame; a cantilever, the rotation of the cantilever is installed on the outside of the rotating frame; a hydraulic cylinder, a lower plate is fixedly installed at the bottom of the hydraulic cylinder, the lower plate is hinged to one side of the fixed plate, an upper plate is fixedly connected to the output end of the hydraulic cylinder, and the upper plate is hinged to one side of the cantilever; a locking mechanism, the locking mechanism comprises a fixed cylinder fixedly connected to the top of the lower plate and a connecting column fixedly connected to the bottom of the upper plate, the connecting column is slidably connected in the fixed cylinder, and both sides of the fixed cylinder are slidably connected with a card plate, and both sides of the connecting column are provided with a plurality of card slots. The utility model can stably support the cantilever after the cantilever tilt is adjusted through the provided locking mechanism, thereby ensuring the safety of use.

Description

Technical Field

[0001] The utility model relates to the technical field of crane cantilevers, in particular to a cantilever upward tilt adjustment mechanism for a cantilever crane. Background Art

[0002] The working strength of the cantilever crane is light. The crane consists of a column, a slewing arm slewing drive device and an electric hoist. The lower end of the column is fixed to the concrete foundation by anchor bolts. The cycloidal pinwheel reducer drives the slewing arm to slew. The electric hoist runs straight left and right on the slewing arm I-beam and lifts heavy objects. The crane jib is a hollow steel structure with light weight, large span, large lifting capacity, economical and durable. With the development of industry, cantilever cranes are widely used in production activities to save labor costs.

[0003] The patent document with publication number CN213923814U discloses a cantilever upward tilt adjustment mechanism for a cantilever crane, comprising a hydraulic lifting column, a rotating seat, an adjustment seat and a cantilever, wherein a fixed plate is welded to the bottom of the hydraulic lifting column, and a rotating seat is welded to the telescopic end of the hydraulic lifting column, a storage groove is opened in the center of the rotating seat, and a rotating component is provided on the inner periphery of the storage groove, an adjustment seat is provided above the rotating seat, a support plate is welded to the top of the adjustment seat, an adjustment component is provided at the bottom of the bent portion of the support plate, and a counterweight is welded to one side of the adjustment seat.

[0004] In the above technical solution, the upward tilt angle of the cantilever is adjusted by a cylinder. However, in the subsequent process of supporting the cantilever, the load borne by the cantilever will also be directly transmitted to the cylinder, so that the cylinder is borne by a large continuous load, which will affect the stability of the support and pose a safety hazard. Therefore, we propose a cantilever upward tilt adjustment mechanism for a cantilever crane to solve this problem. Utility Model Content

[0005] The utility model aims to provide a cantilever upward tilt adjustment mechanism for a cantilever crane to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A cantilever upward tilt adjustment mechanism for a cantilever crane, comprising:

[0008] A column, one side of which is fixedly connected with a fixing plate, and a rotating frame is fixedly installed on the top of the column;

[0009] a cantilever, the cantilever being rotatably mounted on the outside of the rotating frame;

[0010] A hydraulic cylinder, wherein a lower plate is fixedly mounted on the bottom of the hydraulic cylinder, the lower plate is hinged to one side of the fixed plate, and an upper plate is fixedly connected to the output end of the hydraulic cylinder, the upper plate is hinged to one side of the cantilever;

[0011] A locking mechanism, the locking mechanism includes a fixed cylinder fixedly connected to the top of the lower plate and a connecting column fixedly connected to the bottom of the upper plate, the connecting column is slidably connected in the fixed cylinder, and both sides of the fixed cylinder are slidably connected with a clamping plate, and both sides of the connecting column are provided with multiple clamping grooves, and the two clamping plates are movably clamped in the corresponding clamping grooves.

[0012] Preferably, a sliding ring is slidably sleeved on the outer side of the fixed cylinder, inclined rods are fixedly connected to both sides of the top of the sliding ring, an inclined hole is opened at the bottom of the clamping plate, and the two inclined rods are slidably connected in the corresponding inclined holes respectively.

[0013] Preferably, the locking mechanism is arranged in two groups, a same connecting ring is fixedly connected between the two sliding rings, a same fixing frame is fixedly installed on the outer sides of the two fixing cylinders, an electric push rod is fixedly installed on the top front side of the fixing frame, and the output end of the electric push rod is fixedly connected to the bottom of the connecting ring.

[0014] Preferably, a positioning spring is fixedly connected to the top of the oblique rod, a side plate is fixedly connected to the top of the positioning spring, and the side plate is fixedly connected to the outer side of the corresponding fixing cylinder.

[0015] Preferably, the bottom of the column is fixedly connected to a fixing seat, and the outer side of the fixing seat is provided with a chamfer.

[0016] Preferably, a through hole is provided at the top of the cantilever, the rotating frame is arranged in the through hole, and a fixing column is fixedly installed inside the rotating frame, circular holes are provided on the front and rear inner walls of the through hole, the two fixing columns are rotatably connected in the corresponding circular holes, and two limiting rings are fixedly sleeved on the outer side of the fixing column, and the two limiting rings are movably abutted against the front and rear sides of the cantilever respectively.

[0017] Preferably, a groove is provided at the top of the cantilever, and track grooves are provided at the front and rear sides of the cantilever.

[0018] In the utility model, a cantilever upward tilt adjustment mechanism for a cantilever crane is described, which drives the connecting ring to move upward by starting the electric push rod, and the connecting ring drives two sliding rings to move upward synchronously, and the sliding ring cooperates with the two clamping plates to make the clamping plates disengage from the clamping grooves, thereby releasing the fixation of the connecting column, and then starts the hydraulic cylinder to control its output end to extend and retract, thereby driving the upper plate to move, thereby driving the cantilever to rotate, so as to achieve the adjustment of the cantilever upward tilt;

[0019] In the utility model, the cantilever upward tilt adjustment mechanism for a cantilever crane controls the connection ring to move downward by starting the electric push rod, thereby driving the connection ring and the sliding ring to move downward, and driving the card plate to move in the opposite direction, so that the card plate is inserted into the corresponding card slot to support the connection column, thereby achieving stable support for the cantilever;

[0020] The utility model has a reasonable structural design, and the locking mechanism is arranged so as to stably support the cantilever after the upward tilt of the cantilever is adjusted, thereby ensuring the safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a three-dimensional structural schematic diagram of a cantilever upward tilt adjustment mechanism for a cantilever crane proposed by the utility model;

[0022] Figure 2 This is a schematic cross-sectional structure diagram of a cantilever upward tilt adjustment mechanism for a cantilever crane proposed by the utility model;

[0023] Figure 3 This is a three-dimensional structural schematic diagram of the locking mechanism proposed by the utility model;

[0024] Figure 4 It is a partial three-dimensional structural schematic diagram of the locking mechanism proposed by the utility model;

[0025] Figure 5 This is a partial cross-sectional structural schematic diagram of the locking mechanism proposed by the utility model.

[0026] In the figure: 1, column; 2, fixed plate; 3, cantilever; 4, rotating frame; 5, fixed column; 6, upper plate; 7, connecting column; 8, slot; 9, sliding ring; 10, fixed cylinder; 11, hydraulic cylinder; 12, electric push rod; 13, lower plate; 14, fixed frame; 15, connecting ring; 16, side plate; 17, positioning spring; 18, inclined rod; 19, clamping plate. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0028] Reference Figure 1-5 , a cantilever upward tilt adjustment mechanism for a cantilever crane, comprising:

[0029] A column 1, a fixed plate 2 is fixedly connected to one side of the column 1, and a rotating frame 4 is fixedly installed on the top of the column 1;

[0030] A cantilever 3, the cantilever 3 is rotatably mounted on the outside of a rotating frame 4;

[0031] A hydraulic cylinder 11, a lower plate 13 is fixedly installed at the bottom of the hydraulic cylinder 11, the lower plate 13 is hinged to one side of the fixed plate 2, an upper plate 6 is fixedly connected to the output end of the hydraulic cylinder 11, and the upper plate 6 is hinged to one side of the cantilever 3;

[0032] The locking mechanism includes a fixed cylinder 10 fixedly connected to the top of the lower plate 13 and a connecting column 7 fixedly connected to the bottom of the upper plate 6. The connecting column 7 is slidably connected in the fixed cylinder 10, and both sides of the fixed cylinder 10 are slidably connected with a clamping plate 19. Both sides of the connecting column 7 are provided with multiple clamping grooves 8, and the two clamping plates 19 are movably clamped in the corresponding clamping grooves 8 respectively.

[0033] In this embodiment, a sliding ring 9 is slidably sleeved on the outer side of the fixed cylinder 10, and inclined rods 18 are fixedly connected to both sides of the top of the sliding ring 9. An inclined hole is opened at the bottom of the clamping plate 19, and the two inclined rods 18 are respectively slidably connected in the corresponding inclined holes, thereby facilitating the two clamping plates 19 to move away from each other.

[0034] In this embodiment, the locking mechanism is provided in two groups, a same connecting ring 15 is fixedly connected between the two sliding rings 9, a same fixing frame 14 is fixedly installed on the outer sides of the two fixing cylinders 10, an electric push rod 12 is fixedly installed on the top front side of the fixing frame 14, and the output end of the electric push rod 12 is fixedly connected to the bottom of the connecting ring 15, thereby facilitating the movement of the connecting ring 15 and the two sliding rings 9.

[0035] In this embodiment, the top of the inclined rod 18 is fixedly connected to a positioning spring 17, and the top of the positioning spring 17 is fixedly connected to a side plate 16. The side plate 16 is fixedly connected to the outer side of the corresponding fixed tube 10, thereby assisting in positioning the inclined rod 18 and preventing the clamping plate 19 from shifting when the electric push rod 12 fails.

[0036] In this embodiment, the bottom of the column 1 is fixedly connected to a fixing seat, and the outer side of the fixing seat is provided with a chamfer.

[0037] In this embodiment, a through hole is opened at the top of the cantilever 3, the rotating frame 4 is arranged in the through hole, and a fixing column 5 is fixedly installed inside the rotating frame 4, and circular holes are opened on the inner walls on the front and rear sides of the through hole. The two fixing columns 5 are respectively rotatably connected in the corresponding circular holes, and two limiting rings are fixedly sleeved on the outer side of the fixing column 5, and the two limiting rings are respectively movably abutted against the front and rear sides of the cantilever 3.

[0038] In this embodiment, a groove is formed at the top of the cantilever 3 , and track grooves are formed at the front and rear sides of the cantilever 3 .

[0039] In this embodiment, when in use, the electric push rod 12 is started to drive the connecting ring 15 to move upward, and the connecting ring 15 drives the two sliding rings 9 to move upward synchronously. The sliding ring 9 cooperates with the two clamping plates 19 to make the clamping plate 19 disengage from the clamping slot 8, thereby releasing the fixation of the connecting column 7, and then the hydraulic cylinder 11 is started to control its output end to extend and retract, thereby driving the upper plate 6 to move, thereby driving the cantilever 3 to rotate, so as to adjust the upward tilt of the cantilever 3, and the electric push rod 12 is started to control the connecting ring 15 to move downward, thereby driving the connecting ring 15 and the sliding ring 9 to move downward, and driving the clamping plate 19 to move in the opposite direction, so that the clamping plate 19 is clamped into the corresponding clamping slot 8 to support the connecting column 7, thereby achieving stable support for the cantilever 3.

[0040] The above is a detailed introduction to a cantilever tilt adjustment mechanism for a cantilever crane provided by the utility model. This article uses specific embodiments to explain the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A cantilever tilt adjustment mechanism for a cantilever crane, characterized in that: include: A column (1), one side of the column (1) is fixedly connected to a fixing plate (2), and a rotating frame (4) is fixedly installed on the top of the column (1); A cantilever (3), wherein the cantilever (3) is rotatably mounted on the outside of the rotating frame (4); A hydraulic cylinder (11), wherein a lower plate (13) is fixedly mounted on the bottom of the hydraulic cylinder (11), wherein the lower plate (13) is hinged to one side of the fixed plate (2), and an upper plate (6) is fixedly connected to the output end of the hydraulic cylinder (11), wherein the upper plate (6) is hinged to one side of the cantilever (3); A locking mechanism, the locking mechanism comprising a fixed cylinder (10) fixedly connected to the top of the lower plate (13) and a connecting column (7) fixedly connected to the bottom of the upper plate (6), the connecting column (7) being slidably connected in the fixed cylinder (10), and both sides of the fixed cylinder (10) being slidably connected with a clamping plate (19), both sides of the connecting column (7) being provided with a plurality of clamping grooves (8), and two of the clamping plates (19) being movably clamped in the corresponding clamping grooves (8) respectively.

2. The cantilever upward tilt adjustment mechanism for a cantilever crane according to claim 1, characterized in that: The outer side of the fixed cylinder (10) is slidably sleeved with a sliding ring (9), and both sides of the top of the sliding ring (9) are fixedly connected with inclined rods (18). The bottom of the clamping plate (19) is provided with an inclined hole, and the two inclined rods (18) are respectively slidably connected in the corresponding inclined holes.

3. The cantilever upward tilt adjustment mechanism for a cantilever crane according to claim 2, characterized in that: The locking mechanism is arranged in two groups, a same connecting ring (15) is fixedly connected between the two sliding rings (9), a same fixing frame (14) is fixedly installed on the outer sides of the two fixing cylinders (10), an electric push rod (12) is fixedly installed on the top front side of the fixing frame (14), and the output end of the electric push rod (12) is fixedly connected to the bottom of the connecting ring (15).

4. The cantilever upward tilt adjustment mechanism for a cantilever crane according to claim 3, characterized in that: The top of the inclined rod (18) is fixedly connected to a positioning spring (17), the top of the positioning spring (17) is fixedly connected to a side plate (16), and the side plate (16) is fixedly connected to the outer side of the corresponding fixed cylinder (10).

5. The cantilever upward tilt adjustment mechanism for a cantilever crane according to claim 1, characterized in that: The bottom of the column (1) is fixedly connected to a fixing seat, and the outer side of the fixing seat is provided with a chamfer.

6. The cantilever upward tilt adjustment mechanism for a cantilever crane according to claim 1, characterized in that: A through hole is provided at the top of the cantilever (3), the rotating frame (4) is arranged in the through hole, and a fixing column (5) is fixedly installed inside the rotating frame (4), circular holes are provided on the inner walls on both the front and rear sides of the through hole, and the two fixing columns (5) are rotatably connected in the corresponding circular holes, and two limiting rings are fixedly sleeved on the outer sides of the fixing columns (5), and the two limiting rings are movably abutted against the front and rear sides of the cantilever (3).

7. The cantilever upward tilt adjustment mechanism for a cantilever crane according to claim 1, characterized in that: A groove is provided at the top of the cantilever (3), and track grooves are provided at both the front and rear sides of the cantilever (3).

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