Liftable portal frame mechanism

Abstract

The utility model belongs to the technical field of portal frames, and provides a liftable portal frame mechanism which comprises a cross beam, stand columns and a bottom frame. The stand columns are connected to two ends of the beam; the stand columns are inserted into the bottom frame. Positioning blocks protruding out of the surfaces of the stand columns are arranged on the stand columns; a limiting assembly is arranged on the bottom frame. The limiting assembly comprises an elastic module and a limiting block. The elastic module is used for driving the limiting block to be attached to the face, provided with the positioning block, of the stand column. Bolt holes are formed in the stand columns and the bottom frame; when the limiting blocks make contact with the positioning blocks, the stand columns and the bottom frame are fixedly connected through bolts inserted into the bolt holes. The positioning block is arranged on the stand column, the limiting assembly is arranged on the bottom frame, the elastic module is used for driving the limiting block to be attached to the face, provided with the positioning block, of the stand column, it is guaranteed that when the stand column ascends, the positioning block can make contact with the limiting block, the plug pin holes in the stand column and the bottom frame are aligned so that the plug pin can be inserted into the fixed stand column, and operation of workers is facilitated.

Description

Technical Field

[0001] This utility model belongs to the field of gantry technology, specifically a liftable gantry mechanism. Background Technology

[0002] A gantry frame is a support structure that spans an open space, typically consisting of two uprights and a crossbeam. The uprights support the crossbeam, while the crossbeam connects the two uprights to form a frame structure. Gantry frames generally possess high strength and stability, capable of withstanding significant weight and force.

[0003] CN201720875555.X discloses a detachable simple gantry frame, including a crossbar, lifting points, two first uprights, two second uprights, pins, and a base plate. The lifting points are set on the crossbar. The tops of the two first uprights are symmetrically set at both ends of the crossbar. The two first uprights are detachably connected to the crossbar. Several first adjustment holes are symmetrically provided on the two first uprights. The two second uprights are hollow inside and have several second adjustment holes symmetrically provided on them. The first uprights can be inserted into the second uprights. The pins pass through the first and second adjustment holes. The first uprights and the second uprights are connected by pins. The base plate is set at the bottom end of the second uprights.

[0004] In the above technical solution, the first upright is fixed by passing a pin through the first adjustment hole and the second adjustment hole. However, when fixing the first upright, the worker can only judge whether the first adjustment hole and the second adjustment hole are aligned by visual inspection. Only after confirming that the holes are aligned can the pin be inserted into the first adjustment hole and the second adjustment hole, which increases the difficulty of operation. Utility Model Content

[0005] The purpose of this utility model is to solve the above-mentioned problems and provide a liftable gantry mechanism. This gantry mechanism sets a positioning block on the column and a limiting component on the base frame. The limiting block is driven by an elastic module to fit against the side of the column with the positioning block. This ensures that when the column rises, the positioning block can contact the limiting block and align the pin holes on the column and the base frame to insert the pin to fix the column, which facilitates worker operation.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A liftable gantry mechanism includes a crossbeam, a column, and a base frame; the column is connected to both ends of the crossbeam; the column is inserted into the base frame; the column has a positioning block protruding from its surface; the base frame has a limiting component; the limiting component includes an elastic module and a limiting block, the elastic module being used to drive the limiting block to conform to the side of the column with the positioning block; both the column and the base frame have pin holes; when the limiting block and the positioning block are in contact, the column and the base frame are fixedly connected by pins inserted into the pin holes.

[0008] In the liftable gantry mechanism, the elastic module comprises a mounting seat arranged on the base frame and a spring, one end of the limiting block is hinged to the mounting seat, and the other end is attached to one side of the column provided with the positioning block; one end of the spring is connected to the bottom of the limiting block, and the other end is connected to the side wall of the mounting seat.

[0009] In the liftable gantry mechanism, the limiting block is provided with an arc surface, and the end surface of the limiting block attached to the column and the upper surface of the limiting block are connected through the arc surface.

[0010] In the liftable gantry mechanism, the mounting seat is provided with a first threaded hole, the base plate is provided with a second threaded hole matched with the first threaded hole, and the mounting seat is fixed on the base plate by penetrating the first threaded hole and the second threaded hole with a bolt.

[0011] In the liftable gantry mechanism, the cross beam is provided with a lifting ring.

[0012] In the liftable gantry mechanism, the base frame comprises a support seat, a sleeve vertically arranged on the top of the support seat, and a universal wheel arranged at the bottom of the support seat, the column is inserted into the sleeve, and the limiting assembly is arranged on the outer wall of the sleeve.

[0013] In the liftable gantry mechanism, the base frame further comprises a reinforcing rib, one end of the reinforcing rib is connected to the top of the support seat, and the other end is connected to the sleeve.

[0014] In the liftable gantry mechanism, the column is symmetrically arranged at the two ends of the cross beam in a detachable manner.

[0015] Compared with the prior art, the liftable gantry mechanism has the following beneficial effects:

[0016] The positioning block is arranged on the column, the limiting assembly is arranged on the base frame, and the elastic module is used to drive the limiting block to be attached to one side of the column provided with the positioning block, so that the positioning block can be in contact with the limiting block when the column is lifted, and the pin hole on the column and the base frame is aligned to insert the pin into the column for fixation, thereby facilitating the operation of workers. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a perspective view of a liftable gantry mechanism of embodiment 1;

[0018] Figure 2 is Figure 1 A partial enlarged view of the A of the A;

[0019] In the drawings, the reference signs of each figure are:

[0020] 1, crossbeam; 11, lifting ring; 2, stand; 21, positioning block; 3, base frame; 31, support seat; 32, sleeve; 33, universal wheel; 34, reinforcing rib; 4, limiting assembly; 41, elastic module; 411, mounting seat; 4111, first threaded hole; 412, spring; 42, limiting block; 421, arc surface; 5, bolt. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0022] Embodiment 1

[0023] Reference Figures 1-2 A liftable portal frame mechanism, comprising a crossbeam 1, a stand 2 and a base frame 3; the stand 2 is connected at both ends of the crossbeam 1; the stand 2 is inserted into the base frame 3; the stand 2 is provided with a positioning block 21 protruding from the surface of the stand 2; the base frame 3 is provided with a limiting assembly 4; the limiting assembly 4 comprises an elastic module 41 and a limiting block 42, the elastic module 41 is used to drive the limiting block 42 to adhere to one side of the stand 2 provided with the positioning block 21; the stand 2 and the base frame 3 are both provided with bolt holes (not shown in the figure); when the limiting block 42 and the positioning block 21 are in contact, the stand 2 and the base frame 3 are fixedly connected by inserting the bolt 5 into the bolt hole.

[0024] Under this design, the stand 2 is inserted into the base frame 3, the stand 2 is lifted, and under the action of the elastic module 41, the limiting block 42 adheres to one side of the stand 2 provided with the positioning block 21, so that the positioning block 21 will be in contact with the limiting block 42 during the lifting of the stand 2, and the worker can fix the stand 2 by inserting the bolt 5 into the bolt hole, and the stand 2 can be lowered by pulling out the bolt 5; in this way, the worker's operation is facilitated.

[0025] In this embodiment, the elastic module 41 comprises a mounting seat 411 provided on the base frame 3 and a spring 412, one end of the limiting block 42 is hinged to the mounting seat 411, and the other end adheres to one side of the stand 2 provided with the positioning block 21; one end of the spring 412 is connected to the bottom of the limiting block 42, and the other end is connected to the side wall of the mounting seat 411.

[0026] The limiting block 42 is provided with an arc surface 421, and the end surface of the limiting block 42 adhering to the stand 2 and the upper surface of the limiting block 42 are connected by the arc surface 421.

[0027] Specifically, one end of the spring 412 is connected with the bottom of the limiting block 42, the other end is connected with the side wall of the mounting base 411, and the limiting block 42 is adhered to the side of the stand 2 provided with the positioning block 21 by driving of the spring 412, so that the shaking range of the stand 2 during rising can be reduced and it is ensured that the limiting block 42 can contact the positioning block 21.

[0028] Further, an arc surface 421 is arranged on the limiting block 42, and when the stand 2 moves downward, the arc surface 421 is first contacted by the protrusion on the surface of the stand 2, so that the limiting block 42 is pushed away and swings, thereby avoiding the situation that the stand 2 is stuck during downward movement.

[0029] More preferably, the mounting base 411 is provided with a first threaded hole 4111, and the chassis is provided with a second threaded hole (not shown in the figure) matched with the first threaded hole 4111, and the mounting base 411 is fixed on the chassis by passing a bolt through the first threaded hole 4111 and the second threaded hole. The mounting base 411 can be conveniently disassembled and assembled by passing a bolt through the first threaded hole 4111 and the second threaded hole.

[0030] More preferably, the cross beam 1 is provided with a lifting ring 11.

[0031] Specifically, a large mechanical pump is placed in the mechanical pump room, and a very heavy motor is arranged above the pump body. When the motor fails, the motor needs to be moved to a maintenance table. Since the height of the room door in the mechanical pump room is low, the stand 2 is not lifted first, and after the gantry mechanism enters the room, the stand 2 is lifted and fixed, then an external manual or electric hoist is installed on the lifting ring 11, the motor is lifted by the manual or electric hoist installed on the lifting ring 11, then the gantry mechanism is pushed to the motor placement point, and then the manual or electric hoist is controlled to lower the motor to the maintenance table.

[0032] Preferably, the base frame 3 comprises a support base 31, a sleeve 32 vertically arranged on the top of the support base 31, and universal wheels 33 arranged at the bottom of the support base 31, the stand 2 is inserted into the sleeve 32, and the limiting assembly 4 is arranged on the outer wall of the sleeve 32.

[0033] Further, the sleeve 32 is arranged on the top of the support base 31, the stand 2 is inserted into the sleeve 32, and the limiting assembly 4 is arranged on the outer wall of the sleeve 32, so that the limiting block 42 can contact the positioning block 21 when the stand 2 is lifted, and the universal wheels 33 arranged at the bottom of the support base 31 can improve the flexibility of the gantry mechanism during movement.

[0034] In the embodiment, the chassis 3 further comprises a reinforcing rib 34, one end of the reinforcing rib 34 is connected with the top of the support seat 31, and the other end is connected with the sleeve 32. The reinforcing rib 34 can enhance the rigidity and stability of the sleeve 32.

[0035] Preferably, the column 2 is symmetrically arranged at two ends of the cross beam 1 in a detachable manner. The detachable connection manner can fix the column 2 and the cross beam 1 through bolts, so that the column 2 and the cross beam 1 can be conveniently disassembled and assembled.

[0036] The above is only the preferred embodiment of the present application, it should be pointed out that, for those skilled in the technical field, without departing from the principles of the present application, can make a number of improvements or deformation, these improvements or deformation also should be considered as the protection scope of the present application.

Claims

1. A liftable gantry mechanism, characterized in that, The system includes a crossbeam, columns, and a base frame. The columns are connected to both ends of the crossbeam and inserted into the base frame. Each column has a positioning block protruding from its surface. The base frame has a limiting component. The limiting component includes an elastic module and a limiting block. The elastic module drives the limiting block to fit against the side of the column with the positioning block. Both the column and the base frame have pin holes. When the limiting block and the positioning block are in contact, the column and the base frame are fixedly connected by pins inserted into the pin holes.

2. The liftable gantry mechanism according to claim 1, characterized in that, The elastic module includes a mounting base and a spring mounted on the base frame. One end of the limiting block is hinged to the mounting base, and the other end is attached to the side of the column with the positioning block. One end of the spring is connected to the bottom of the limiting block, and the other end is connected to the side wall of the mounting base.

3. The liftable gantry mechanism according to claim 2, characterized in that, The limiting block has an arc-shaped surface, and the end face of the limiting block that fits with the column and the upper surface of the limiting block are connected by the arc-shaped surface.

4. The liftable gantry mechanism according to claim 2, characterized in that, The mounting base is provided with a first threaded hole, and the chassis is provided with a second threaded hole that matches the first threaded hole. The mounting base is fixed to the chassis by bolts passing through the first threaded hole and the second threaded hole.

5. The liftable gantry mechanism according to claim 1, characterized in that, The crossbeam is equipped with lifting rings.

6. The liftable gantry mechanism according to claim 1, characterized in that, The base frame includes a support base, a top sleeve vertically mounted on the support base, and casters mounted at the bottom of the support base. The upright is inserted into the sleeve, and the limiting component is mounted on the outer wall of the sleeve.

7. A liftable gantry mechanism according to claim 6, characterized in that, The base frame also includes reinforcing ribs, one end of which is connected to the top of the support base and the other end is connected to the sleeve.

8. A liftable gantry mechanism according to claim 1, characterized in that, The columns are symmetrically arranged at both ends of the crossbeam in a detachable manner.

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