CN214828582U

CN214828582U - Small tower crane for constructional engineering

Info

Publication number: CN214828582U
Application number: CN202121504057.7U
Authority: CN
Inventors: 杨龙军
Original assignee: Suzhou Pangyuan Construction Machinery Technology Co ltd
Current assignee: Suzhou Pangyuan Construction Machinery Technology Co ltd
Priority date: 2021-07-05
Filing date: 2021-07-05
Publication date: 2021-11-23
Anticipated expiration: 2031-07-05

Abstract

The utility model discloses a small-sized tower crane for construction engineering, which comprises a base, a crane boom is arranged at the center of the upper surface of the base, supporting arms are inserted into four sides of the base, the upper surface of the base is provided with a limiting post penetrating through the base, the upper surface of the supporting arm is screwed with a threaded post, four corners of the base are movably connected with the supporting legs through a first pin shaft seat, four groups of vertical plates are arranged on the surface of the base, a jack is arranged between a third pin shaft seat and a second pin shaft seat, the lower end of the supporting leg is provided with a ball head seat, a ball head is movably connected in the ball head seat, the surface of the ball head is movably connected with a supporting plate through a connecting post, the utility model increases the supporting area of the base and the ground by pulling four groups of supporting arms, has good supporting effect for the uneven ground, and the four groups of supporting arms and the four groups of supporting legs support the periphery of the base, the crane boom is ensured to be in a vertical state, so that the reliability of the tower crane is improved.

Description

Small tower crane for constructional engineering

Technical Field

The utility model relates to a tower machine technical field specifically is a small-size tower machine that building engineering used.

Background

The tower crane is the most common hoisting equipment on the construction site, also known as tower crane, and is lengthened section by section for hoisting construction raw materials such as reinforcing steel bars, wood ridges, concrete, steel pipes and the like. The tower crane is an indispensable device on a construction site. The tower crane generally divide into large-scale tower crane and small-size tower crane, small-size tower crane often does not need the fixed of ground when carrying out the base fixed, only fixes with ground, and mainly used time limit for a project is short, on the low-rise building that requires frequent removal, current small-size tower crane only relies on four group's support arms all around to support when using, and its base fixity is not stable enough, can appear slightly the condition of rocking when the tower crane rotates, has certain security risk, threatens tower crane operating personnel's personal safety. Therefore, a small tower crane for construction engineering is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a small-size tower machine that building engineering used to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a small tower crane for constructional engineering comprises a base, wherein a crane boom is arranged in the center of the upper surface of the base, supporting arms are inserted into four side surfaces of the base, a plurality of groups of limiting holes are formed in the surface of each supporting arm, at least three groups of limiting holes are formed in each limiting hole, and the three groups of limiting holes are uniformly distributed on the surface of each supporting arm;

the upper surface of the base is provided with a limiting post penetrating through the base, the lower end of the limiting post is inserted into a limiting hole, a limiting rod is inserted into the upper end of the limiting post, a tension spring is arranged between the insertion end of the limiting rod and the inner wall of the limiting post, the other end of the limiting rod is provided with a hook, the upper surface of the base is provided with four groups of vertical blocks, the surfaces of the four groups of vertical blocks are provided with circular rings corresponding to the hooks, the upper surface of the support arm is screwed with a threaded post, and the center of the upper end of the threaded post is provided with a cross handle;

the lower end of the threaded column is provided with a supporting plate, four corners of the base are movably connected with the supporting leg through a first pin shaft seat, four groups of vertical plates are arranged on the surface of the base, a second pin shaft seat is arranged on the surface of each vertical plate, a third pin shaft seat is arranged at the upper end of the supporting leg, a jack is arranged between the third pin shaft seat and the second pin shaft seat, and the second pin shaft seat is higher than the third pin shaft seat;

the supporting leg lower extreme is equipped with the bulb seat, swing joint has the bulb in the bulb seat, the bulb surface has the supporting disk through spliced pole swing joint, the fixing support has been cup jointed on the supporting disk surface, be equipped with the spring between supporting disk lower surface and the fixing support inner wall.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model increases the supporting area of the base and the ground by drawing the four groups of supporting arms, and then the screw thread column is screwed to support the supporting plate on the ground, thereby having good supporting effect against uneven ground, the supporting legs are controlled by the jack to rotate by taking the first pin shaft seat as the center, the ball head seat is movably connected with the ball head, the fixed support can be fully contacted with the ground, the stability between the base and the ground is further enhanced, when the crane boom works, the four groups of supporting arms and the four groups of supporting legs support the periphery of the base, the crane boom is ensured to be in a vertical state, thereby improving the reliability of the tower crane, when the crane boom rotates, the elasticity of the spring buffers the supporting legs, the base is prevented from shaking, the crane boom is further rotated stably, the crane boom is prevented from shaking obliquely, after the screw thread column is screwed, the supporting legs are contracted by the jack, and the base can be moved rapidly, time and labor are saved.

Drawings

FIG. 1 is a schematic sectional view of the present invention;

FIG. 2 is a schematic view of the connection structure of the base and four sets of support legs;

FIG. 3 is a schematic structural view of the connection between the supporting leg and the fixing support of the present invention;

fig. 4 is an enlarged schematic structural view of a portion a in fig. 1 according to the present invention.

In the figure: 1. a base; 2. a cargo boom; 3. a support arm; 4. a limiting column; 5. a threaded post; 6. a cross handle; 7. a support plate; 8. a limiting rod; 9. a tension spring; 10. hooking; 11. erecting a block; 12. a circular ring; 13. a first pin shaft seat; 14. supporting legs; 15. a vertical plate; 16. a third pin shaft seat; 17. a second pin shaft seat; 18. a jack; 19. a ball cup seat; 20. a ball head; 21. connecting columns; 22. a support disc; 23. a fixed support; 24. a spring; 25. and a limiting hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a small tower crane for constructional engineering comprises a base 1, wherein a crane boom 2 is installed in the center of the upper surface of the base 1, the base 1 supports the crane boom 2, support arms 3 are inserted into four side surfaces of the base 1, the support arms 3 can slide along the inside of the base 1, a plurality of groups of limiting holes 25 are formed in the surface of each support arm 3, a limiting column 4 penetrating through the base 1 is arranged on the upper surface of the base 1, and the lower end of each limiting column 4 is inserted into each limiting hole 25;

the upper surface of the supporting arm 3 is screwed with a threaded column 5, the lower end of the threaded column 5 is provided with a supporting plate 7, and the supporting plate 7 is in contact with the ground and can support the base 1 through the supporting arm 3;

four corners of the base 1 are movably connected with supporting legs 14 through first pin shaft seats 13, four groups of vertical plates 15 are arranged on the surface of the base 1, second pin shaft seats 17 are arranged on the surfaces of the vertical plates 15, third pin shaft seats 16 are arranged at the upper ends of the supporting legs 14, jacks 18 are arranged between the third pin shaft seats 16 and the second pin shaft seats 17, the supporting legs 14 can be contracted when the jacks 18 are extended, and the supporting legs 14 can be gradually in a vertical state when the jacks 18 are shortened to support the base 1;

the lower end of the supporting leg 14 is provided with a ball head seat 19, a ball head 20 is movably connected in the ball head seat 19, the surface of the ball head 20 is movably connected with a supporting plate 22 through a connecting column 21, and the supporting plate 22 can freely move, so that the lower surface of the supporting plate 22 can be completely contacted with the ground.

Specifically, 5 upper end centers department of screw thread post is equipped with cross handle 6, can be more laborsaving rotate screw thread post 5 through cross handle 6, conveniently adjust the height of 5 lower extreme backup pads 7 of screw thread post.

Specifically, limiting rod 8 is inserted to 4 upper ends of spacing post inside, be equipped with extension spring 9 between the end of inserting of limiting rod 8 and the 4 inner walls of spacing post, the 8 other ends of limiting rod are equipped with

crotch

10, 1 upper surface of base is equipped with four group's upright piece 11, and four group's upright piece 11 surfaces all are equipped with the ring 12 that corresponds with there is crotch 10, and when crotch 10 hung on ring 12, extension spring 9's pulling force can prevent that crotch 10 from droing from ring 12, and then prevents that spacing post 4 from rocking, guarantees the stability that base 1 and support arm 3 are connected.

Specifically, the fixed support 23 is sleeved on the surface of the supporting disc 22, a spring 24 is arranged between the lower surface of the supporting disc 22 and the inner wall of the fixed support 23, and when the base 1 slightly shakes, the spring 24 buffers the base 1.

Specifically, the limiting holes 25 are at least provided with three groups, the three groups of limiting holes 25 are uniformly distributed on the surface of the supporting arm 3, the limiting columns 4 are controlled to be inserted into different limiting holes 25, and the length of the supporting arm 3 extending out of the base 1 can be adjusted.

Specifically, when the device is used, the four groups of limiting columns 4 are pulled out, the four groups of supporting arms 3 are pulled out from the base 1, the four groups of limiting columns 4 are inserted into limiting holes 25 in the supporting arms 3 to fix the supporting arms 3 and the base 1, the limiting rod 8 is pulled to enable hooks 10 on the limiting rod 8 to be hooked in a circular ring 12 to fix the limiting columns 4, the limiting columns 4 are prevented from falling off from the limiting holes 25 due to accidents, the threaded columns 5 are rotated through the cross handle 6, the supporting plate 7 at the lower ends of the threaded columns 5 is contacted with the ground, the four groups of supporting arms 3 can support the front, the back, the left and the right of the base 1 at the moment, the four groups of jacks 18 are sequentially controlled to extend, the corresponding supporting legs 14 rotate by taking the first pin shaft seats 13 as centers, the lower ends of the supporting legs 14 are enabled to be close to the ground continuously until the fixed supports 23 are contacted with the ground, and the four groups of supporting legs 14 are matched with the four groups of supporting arms 3 to support the base 1 in multiple directions, ensuring the stability of the base 1 allows stable operation of the boom 2.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A small-size tower machine that building engineering used, includes base (1), its characterized in that: the crane boom support is characterized in that a crane boom (2) is installed at the center of the upper surface of a base (1), support arms (3) are inserted into four side surfaces of the base (1), a plurality of groups of limiting holes (25) are formed in the surface of each support arm (3), limiting columns (4) penetrating through the base (1) are arranged on the upper surface of the base (1), the lower ends of the limiting columns (4) are inserted into the limiting holes (25), threaded columns (5) are screwed on the upper surface of the support arms (3), a support plate (7) is arranged at the lower ends of the threaded columns (5), four corners of the base (1) are movably connected with support legs (14) through first pin shaft seats (13), four groups of vertical plates (15) are arranged on the surface of the base (1), second pin shaft seats (17) are arranged on the surfaces of the vertical plates (15), third pin shaft seats (16) are arranged at the upper ends of the support legs (14), jacks (18) are installed between the third pin shafts (16) and the second pin shaft seats (17), the supporting leg (14) lower extreme is equipped with bulb seat (19), swing joint has bulb (20) in bulb seat (19), there is supporting disk (22) bulb (20) surface through spliced pole (21) swing joint.

2. A small-sized tower crane for construction engineering as claimed in claim 1, characterized in that: and a cross handle (6) is arranged at the center of the upper end of the threaded column (5).

3. A small-sized tower crane for construction engineering as claimed in claim 1, characterized in that: spacing post (4) upper end is inside to be inserted spacing pole (8), be equipped with extension spring (9) between the end of inserting of spacing pole (8) and spacing post (4) inner wall, the gag lever post (8) other end is equipped with crotch (10), base (1) upper surface is equipped with four groups and founds piece (11), and four groups found piece (11) surfaces all are equipped with and have ring (12) that crotch (10) correspond.

4. A small-sized tower crane for construction engineering as claimed in claim 1, characterized in that: the surface of the supporting disk (22) is sleeved with a fixed support (23), and a spring (24) is arranged between the lower surface of the supporting disk (22) and the inner wall of the fixed support (23).

5. A small-sized tower crane for construction engineering as claimed in claim 1, characterized in that: the limiting holes (25) are at least provided with three groups, and the three groups of limiting holes (25) are uniformly distributed on the surface of the supporting arm (3).