Support structure of electric hoist crane bracket

Abstract

The utility model provides an electric hoist crane bracket supporting structure, and belongs to the technical field of machinery. The problem that the position of a supporting foot of an existing crane support is inconvenient to adjust is solved. A support comprises a cross beam, a supporting structure is arranged at the end of the cross beam and comprises a connecting pipe vertically formed on the cross beam, a supporting foot arranged below the connecting pipe and a cover plate arranged above the cross beam, the cover plate shields an upper port of the connecting pipe, a threaded rod is vertically arranged in the connecting pipe, and the threaded rod is in threaded connection with the lower end of the connecting pipe. The lower end of the screw extends out of the connecting pipe and is fixedly connected with the supporting foot, a connecting hole is vertically formed in the top of the screw, and a through hole is vertically formed in the cover plate. An approximately L-shaped adjusting rod is arranged above the cover plate, the adjusting rod is composed of a horizontally-arranged holding part and a vertically-arranged connecting part, the lower end of the connecting part penetrates through the through hole and extends into the connecting hole, and the lower end of the connecting part is connected with the inner wall of the connecting hole in a circumferential fit mode through a flat key. The position of the supporting foot is convenient to adjust.

Description

Technical Field

[0001] The utility model belongs to the technical field of machinery and relates to an electric hoist crane, in particular to a bracket supporting structure of the electric hoist crane. Background Art

[0002] An electric hoist crane is a type of lifting machinery that performs cyclic and intermittent motion. Its structure is as disclosed in the Chinese Patent Library as a single-beam lifting equipment for a reducer (application number: 202021491672.4), which includes an I-beam crossbeam, a first bracket, a second bracket, a caster mounting seat, a rotating shaft, casters, a column, a first nut, a screw, a support leg, a slide, a guide wheel, an electric hoist, a motor, a wire rope and a hook. The top of the first bracket is connected to the bottom end of the I-beam crossbeam, the top of the second bracket is connected to the bottom end of the I-beam crossbeam, the tops of the four sets of caster mounting seats are respectively connected to the bottom ends of the first bracket and the second bracket, and the rotating shaft is installed on the caster mounting seat. The casters are rotatably mounted on the caster mounting seat through a rotating shaft, the top ends of the four groups of columns are respectively connected to the bottom ends of the first bracket and the second bracket, the top end of the first nut is connected to the bottom end of the column, the top end of the screw is screwed on the first nut, the top end of the support leg is connected to the bottom end of the screw, a slide groove is provided on the I-beam crossbeam, the slide is slidingly connected to the I-beam crossbeam, multiple groups of guide wheels are rotatably mounted on the slide, the guide wheels are rollingly connected to the slide groove on the I-beam crossbeam, the top end of the electric hoist is connected to the bottom end of the slide, the motor is installed on the electric hoist, the output end of the motor is connected to the power input end of the electric hoist, the wire rope is installed on the electric hoist, and the top end of the hook is connected to the bottom end of the wire rope.

[0003] In the above-mentioned lifting equipment, the position of the support legs is adjusted by manually rotating the screw rod. However, the position of the screw rod for hand grip is extremely low, so the user needs to bend over completely to rotate the screw rod, which is inconvenient to operate. Utility Model Content

[0004] The purpose of the utility model is to solve the above problems in the existing technology and to propose an electric hoist crane support structure that is easy to adjust.

[0005] The purpose of the utility model can be achieved through the following technical solutions: an electric hoist crane bracket support structure, the bracket includes a crossbeam, and the support structure is arranged at the end position of the crossbeam, including a connecting pipe vertically formed on the crossbeam, a support leg arranged below the connecting pipe and a cover plate arranged above the crossbeam, the cover plate blocks the upper port of the connecting pipe, a screw is vertically provided in the connecting pipe, the screw is threadedly connected to the lower end of the connecting pipe, and the lower end of the screw extends out of the connecting pipe and is fixedly connected to the above-mentioned support leg, and is characterized in that a connecting hole is vertically opened at the top of the screw, and a through hole is vertically provided on the cover plate facing the connecting hole; a roughly L-shaped adjusting rod is provided above the cover plate, and the adjusting rod consists of a horizontally arranged gripping part and a vertically arranged connecting part, the lower end of the connecting part passes through the through hole and extends into the connecting hole, and the lower end of the connecting part is circumferentially connected to the inner wall of the connecting hole by a flat key.

[0006] When in use, the user can hold the handle and rotate the adjustment rod to drive the screw to move to adjust the position of the footrest. This can raise the position of the operating screw and reduce the degree of bending over of the user, making the adjustment of the footrest position easier and more convenient.

[0007] In the above-mentioned electric hoist crane bracket support structure, a limiter is also provided in the above-mentioned connecting pipe for supporting the adjustment rod upward. Under the action of the limiter, the adjustment rod can be restricted from moving downward with the screw rod, making it easier to adjust the support leg position.

[0008] In the aforementioned electric hoist crane support structure, the connecting portion comprises an upper section and a lower section. The upper section has a larger outer diameter than the lower section, and the outer side surface of the upper section engages with the inner wall of the through-hole via a circumferential surface. The lower end of the lower section extends into the connecting hole. This design ensures that the adjusting rod smoothly drives the screw, offering advantages such as simple structure and stable operation.

[0009] In the aforementioned electric hoist crane support structure, the limiting element is a retaining ring molded onto the inner wall of the connecting pipe. The retaining ring fits over the lower section, with the bottom surface of the upper section pressing against it. The retaining ring supports the adjustment rod upwards through hard contact, greatly limiting the position of the adjustment rod and making it easier to adjust the support leg position.

[0010] As another solution, in the above-mentioned electric hoist crane support structure, the limiting member is a vertically arranged spring, and the two ends of the spring are respectively pressed against the bottom surface of the upper section and the inner wall of the connecting pipe.

[0011] In the above-mentioned electric hoist crane support structure, the adjusting rod is an integrated structure, which makes its structure extremely stable, thereby driving the screw to rotate more stably.

[0012] In the above-mentioned electric hoist crane support structure, the cover plate extends downward from the through hole to form a circular body, which is sleeved on the outer portion of the upper section and the two are in contact with each other through the circumferential surface to further improve the rotation stability of the adjustment rod.

[0013] Compared with the existing technology, this electric hoist crane bracket support structure has the following advantages:

[0014] 1. When in use, hold the handle and turn the adjustment rod to drive the screw to move to adjust the position of the footrest. This will raise the position of the operating screw and reduce the degree of bending over of the user, making the adjustment of the footrest position easier and more convenient.

[0015] 2. Under the action of the limiter, the adjusting rod can be restricted from moving downward along with the screw, making it easier to adjust the position of the support leg.

[0016] 3. The retaining ring uses hard contact to support the adjustment rod upward, which can greatly limit the position change of the adjustment rod and make it easier to adjust the support foot position. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of an electric hoist crane.

[0018] Figure 2 yes Figure 1 Enlarged schematic diagram of point A in the middle.

[0019] Figure 3 It is a cross-sectional schematic diagram of the support structure.

[0020] In the figure, 1, crossbeam; 1a, connecting pipe; 1b, retaining ring; 2, cover plate; 2a, annular body; 3, screw; 3a, connecting hole; 4, support foot; 5, adjusting rod; 5a, gripping part; 5b, connecting part; 5b1, upper section. DETAILED DESCRIPTION

[0021] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0022] Example 1

[0023] like Figure 1 and Figure 2 As shown, in the electric hoist crane support structure, the support includes a beam 1 at the bottom position, and when in use, the beam 1 is arranged horizontally; the support structure is arranged at the end position of the beam 1, including a connecting pipe 1a vertically formed on the beam 1, a support leg 4 arranged below the connecting pipe 1a and a cover plate 2 arranged above the beam 1.

[0024] in,

[0025] The top and bottom of the connecting pipe 1a are both open.

[0026] The cover plate 2 is horizontally arranged and pressed against the top of the connecting pipe 1a. At this time, the cover plate 2 blocks the upper end of the connecting pipe 1a. Figure 2 and Figure 3 As shown, a screw rod 3 is vertically provided in the connecting tube 1a. The screw rod 3 is threadedly connected to the lower end of the connecting tube 1a, and the lower end of the screw rod 3 extends out of the connecting tube 1a and is fixed to the support leg 4. A connecting hole 3a is vertically provided at the top of the screw rod 3, and the axis of the connecting hole 3a extends vertically. A through hole is vertically penetrated through the cover plate 2, and the through hole is arranged directly opposite the connecting hole 3a. A roughly L-shaped adjustment rod 5 is provided above the cover plate 2. The adjustment rod 5 consists of a horizontally arranged gripping portion 5a and a vertically arranged connecting portion 5b. The lower end of the connecting portion 5b passes through the through hole and extends into the connecting hole 3a. The lower end of the connecting portion 5b is circumferentially connected to the inner wall of the connecting hole 3a by a flat key. Specifically, a key block is vertically fixed to the outer wall of the connecting portion 5b, and a key slot matching the key block is provided on the inner wall of the connecting hole 3a. The upper end of the key slot is open, and the key block is inserted into the key slot.

[0027] When in use, gripping the gripping portion 5a and rotating the adjusting rod 5 can drive the screw 3 to move to adjust the position of the support leg 4. This can raise the position of the operating screw 3 and reduce the degree of bending over of the user, making the position adjustment of the support leg 4 easier and more convenient.

[0028] Further explanation is given that a limiter is provided in the connecting tube 1a for supporting the adjusting rod 5 upwards. Under the action of the limiter, the adjusting rod 5 can be restricted from moving downwards following the screw rod 3, making it easier to adjust the position of the support leg 4.

[0029] In this embodiment,

[0030] like Figure 3 As shown, the connecting portion 5b is divided into a vertically arranged upper section 5b1 and a lower section, with the upper section 5b1 having a larger outer diameter than the lower section. The outer surface of the upper section 5b1 and the inner wall of the through-hole are in contact with each other through a circumferential surface. Further, the cover plate 2 extends downward from the through-hole to form a circular ring 2a, which fits over the upper section 5b1 and engages with each other through a circumferential surface, further enhancing the smooth rotation of the adjusting rod 5. The lower end of the lower section extends into the connecting hole 3a, and the lower section is circumferentially connected to the inner wall of the connecting hole 3a via a flat key. This design ensures that the adjusting rod 5 smoothly drives the screw 3 in rotation, offering advantages such as a simple structure and stable operation.

[0031] The limiting element is a retaining ring 1b molded onto the inner wall of the connecting tube 1a. This ring 1b fits over the lower section, with the bottom surface of the upper section 5b1 pressing against it. The retaining ring 1b provides a hard-contact support for the adjustment rod 5, significantly limiting its positional variation and facilitating adjustment of the support leg 4. The retaining ring 1b and connecting tube 1a are preferably integrally formed.

[0032] In actual products, the adjusting rod 5 is an integrated structure, and preferably the adjusting rod 5 is a cast integral part.

[0033] Example 2

[0034] The structure and principle of the second embodiment are basically the same as those of the first embodiment, except that the limiting member is a vertically arranged spring, and both ends of the spring are pressed against the bottom surface of the upper section 5b1 and the inner wall of the connecting pipe 1a respectively.

[0035] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. An electric hoist crane support structure, the support includes a crossbeam (1), the support structure is arranged at the end position of the crossbeam (1), and includes a connecting pipe (1a) vertically formed on the crossbeam (1), a support leg (4) arranged below the connecting pipe (1a), and a cover plate (2) arranged above the crossbeam (1), the cover plate (2) shielding the upper end of the connecting pipe (1a), a screw rod (3) vertically provided in the connecting pipe (1a), the screw rod (3) being threadedly connected to the lower end of the connecting pipe (1a), and the lower end of the screw rod (3) extending out of the connecting pipe (1a) and fixedly connected to the support leg (4), characterized in that: A connecting hole (3a) is vertically provided at the top of the screw rod (3), and a through hole is vertically provided on the cover plate (2) facing the connecting hole (3a); a roughly L-shaped adjusting rod (5) is provided above the cover plate (2), and the adjusting rod (5) is composed of a horizontally arranged gripping portion (5a) and a vertically arranged connecting portion (5b), the lower end of the connecting portion (5b) passes through the through hole and extends into the connecting hole (3a), and the lower end of the connecting portion (5b) is circumferentially connected to the inner wall of the connecting hole (3a) through a flat key.

2. The electric hoist crane support structure according to claim 1, characterized in that: A limiting member for supporting the adjusting rod (5) upward is also provided in the connecting pipe (1a).

3. The electric hoist crane support structure according to claim 2, characterized in that: The connecting portion (5b) is divided into an upper section (5b1) and a lower section. The outer diameter of the upper section (5b1) is larger than that of the lower section. The outer side surface of the upper section (5b1) and the inner wall of the through hole are in contact with each other through a circumferential surface. The lower end of the lower section extends into the connecting hole (3a).

4. The electric hoist crane support structure according to claim 3, characterized in that: The limiting member is a retaining ring (1b) formed on the inner wall of the connecting pipe (1a), the retaining ring (1b) is sleeved outside the lower section, and the bottom surface of the upper section (5b1) is pressed on the retaining ring (1b).

5. The electric hoist crane support structure according to claim 3, characterized in that: The limiting member is a spring arranged vertically, and both ends of the spring are pressed against the bottom surface of the upper section (5b1) and the inner wall of the connecting pipe (1a) respectively.

6. The electric hoist crane support structure according to claim 1, characterized in that: The adjusting rod (5) is an integrated structure.

7. The electric hoist crane support structure according to claim 3, characterized in that: The cover plate (2) extends downward from the through hole to form a circular ring body (2a), which is sleeved outside the upper section (5b1) and the two are in contact with each other through the circumferential surface.

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