Bottom beam of tower crane

Abstract

The utility model discloses a bottom beam of a tower crane, which relates to the technical field of bottom beams of cranes and comprises a cross beam, four supporting seats are fixedly connected to the top of the cross beam, half beams are fixedly mounted at four ends of the cross beam, a connecting mechanism is arranged on one side, close to the cross beam, of the top of each half beam, and the cross beam is connected with the connecting mechanism. A reinforcing rod is fixedly installed on the adjacent sides of the two half beams. An inserting plate is inserted into an inserting groove, a sliding clamping plate can be inserted into a T-shaped clamping groove, a first bevel gear can drive a second bevel gear to rotate by rotating a first rotary knob, a threaded sliding plate can be driven to slide through a first screw rod, and therefore through mutual sliding of a first inclined face and a second inclined face, the first inclined face and the second inclined face can be matched with each other. According to the bottom beam convenient to use, the sliding clamping plates on the upper side and the lower side can be jacked open, so that the sliding clamping plates can clamp the interiors of the T-shaped clamping grooves, connection and fixation of the cross beam and the half beam are facilitated, the connection effect is improved, and use of the bottom beam is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of crane bottom beams, in particular to a tower crane bottom beam. Background Art

[0002] Tower crane is also called tower crane. It is a rotating crane with the boom mounted on the top of a tall tower. It has a large working space and is mainly used for vertical and horizontal transportation of materials and installation of building components in house construction. It consists of three parts: metal structure, working mechanism and electrical system. The bottom beam in the crane plays a supporting role for the crane.

[0003] The existing technology has the following problems:

[0004] When the existing bottom beam of a tower crane is in use, it is split into a cross beam and a half beam to facilitate the transportation of the bottom beam, and then assembled into a complete bottom beam. However, the existing connection method between the cross beam and the half beam is relatively cumbersome, and the connection effect is poor. At the same time, the existing bottom beam of a tower crane is not convenient for connecting and fixing the reinforcing rod, which is not conducive to the use of the bottom beam. Utility Model Content

[0005] The utility model provides a bottom beam of a tower crane to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] A bottom beam of a tower crane comprises a cross beam, the top of the cross beam is fixedly connected to four support seats, four ends of the cross beam are fixedly installed with half beams, a connecting mechanism is provided on the top of the half beam close to the cross beam, and a reinforcing rod is fixedly installed on the adjacent sides of two half beams.

[0008] The four ends of the cross beam are fixedly connected with a plug-in plate, a side of the plug-in plate away from the cross beam is provided with a T-shaped slot, an end of the half beam close to the cross beam is provided with a plug-in slot, and the plug-in plate is slidably plugged into the inside of the plug-in slot, and the connecting mechanism includes a knob 1, which is movably connected to the top of the half beam close to the side of the cross beam, a bevel gear 1 is fixedly connected to the bottom of the knob 1, a movable slot is provided on the inside of the half beam close to the cross beam, the bevel gear 1 is movably connected to the inside of the movable slot, the outer surface of the bevel gear 1 is meshedly connected with a bevel gear 2, and the bevel gear 1 is meshedly connected to the inside of the movable slot. A first screw is fixedly connected to a side of the gear 2 close to the cross beam, a side of the first screw away from the bevel gear 2 penetrates into the interior of the plug-in slot and a threaded slide is threadedly connected to the outer surface, sliding clamps are provided on the upper and lower sides of the threaded slide, and the two sliding clamps are respectively slidably clamped on the upper and lower sides of the T-shaped clamping slot, and the ends of the two sliding clamps away from the cross beam are slidably connected to two guide slide columns that penetrate up and down, and the upper and lower ends of the guide slide columns are respectively fixedly connected to the upper and lower sides of the inner wall of the plug-in slot, and a return spring is fixedly connected to the side of the sliding clamp away from the threaded slide.

[0009] A further improvement of the technical solution of the utility model is that: inclined surfaces 1 are arranged at both upper and lower ends of the side of the threaded slide plate close to the cross beam, and inclined surface 2 is arranged at the side of the sliding clamp plate away from the cross beam.

[0010] A further improvement of the technical solution of the utility model is that the sliding card plate includes a sliding push plate, which is slidably connected to the outer surface of the guide slide column, and a sliding groove 1 is opened inside the sliding push plate near the side of the cross beam, and an oblique sliding plate is slidably connected inside the sliding groove 1.

[0011] A further improvement of the technical solution of the utility model is that: the side of the oblique slide close to the threaded slide is fixedly connected to a first spring, the side of the oblique slide away from the threaded slide is fixedly connected to an oblique push plate, the movement of the oblique push plate away from the oblique slide passes through to the outside of the sliding push plate and is fixedly connected to a sliding pressure plate.

[0012] A further improvement of the technical solution of the utility model is that: the reinforcing rod includes a connecting rod, which is fixedly connected to an adjacent side of two half-beams, and grooves are provided at both ends of the connecting rod on a side away from the half-beam, and knob 2 is movably connected inside the groove, and a second screw is fixedly connected to a side of knob 2 close to the half-beam, and sliding grooves 2 are provided at both ends of the connecting rod, and the side of the second screw away from knob 2 penetrates into the interior of sliding groove 2 and the outer surface is threadedly connected to a limiting slide.

[0013] A further improvement of the technical solution of the utility model is that: both ends of the limit slide are slidably connected with sliding guide rods, both ends of the sliding guide rods are fixedly connected to the inner wall of the sliding groove 2, the side of the limit slide away from the knob 2 is fixedly connected with a fixed plug plate, and both sides of the half beam close to the two adjacent reinforcing rods are provided with fixed slots, and the end of the fixed plug plate away from the sliding guide rod penetrates into the interior of the fixed slot.

[0014] A further improvement of the technical solution of the utility model is that: the fixed plug plate includes a push plate, the push plate is fixedly connected to the side of the limiting slide away from the knob 2, a sliding groove 3 is opened inside the push plate, a tightening column is slidably connected inside the sliding groove 3, and a second spring is fixedly connected to one end of the tightening column close to the limiting slide.

[0015] A further improvement of the technical solution of the utility model is that: one end of the tightening column away from the second spring passes through the outside of the end of the pushing plate away from the limiting slide and is fixedly connected with the tightening plate, both ends of the tightening plate are slidably connected with right-angle pressure plates, the inner side of the right-angle pressure plate is movably connected with a pushing rod, and the end of the pushing rod away from the tightening plate is movably connected to the side of the pushing plate away from the limiting slide.

[0016] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0017] 1. The utility model provides a bottom beam of a tower crane. Through the mutual cooperation among a knob 1, a bevel gear 1, a bevel gear 2, a first screw rod, a threaded slide plate, a sliding card plate, a guide slide column and a reset spring, a plug-in plate is inserted into a plug-in slot, so that the sliding card plate can be inserted into a T-shaped card slot. By rotating the knob 1, the bevel gear 1 can drive the bevel gear 2 to rotate, and the threaded slide plate can be driven to slide by the first screw rod, so that the sliding card plates on the upper and lower sides can be pushed open by the mutual sliding of the inclined surface 1 and the inclined surface 2, so that the sliding card plates can clamp the inside of the T-shaped card slot, which is convenient for connecting and fixing the cross beam and the half beam, improving the connection effect, and facilitating the use of the bottom beam.

[0018] 2. The utility model provides a bottom beam of a tower crane. The reinforcing rod is placed between two half beams through the mutual cooperation between a connecting rod, a second knob, a second screw rod, a limiting slide plate, a sliding guide rod, and a fixed plug plate. By rotating the second knob, the second screw rod can drive the limiting slide plate to slide, and the fixed plug plate can be inserted into the interior of the fixed slot to fix the reinforcing rod, making the installation of the reinforcing rod more convenient and making the use of the bottom beam more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a cross-sectional structural diagram of the connection mechanism of the utility model;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the sliding card plate of the utility model;

[0022] Figure 4 It is a schematic diagram of the cross-sectional structure of the reinforcing rod of the utility model;

[0023] Figure 5 It is a schematic diagram of the cross-sectional structure of the fixed plug board of the utility model.

[0024] In the figure: 1, cross beam; 11, plug-in board; 2, support seat; 3, half beam; 4, connecting mechanism; 41, knob one; 42, bevel gear one; 43, bevel gear two; 44, first screw rod; 45, threaded slide plate; 46, sliding card plate; 461, sliding push plate; 462, oblique slide plate; 463, first spring; 464, oblique push plate; 465, sliding pressure plate; 47, guide slide column; 48, reset spring; 5, reinforcing rod; 51, connecting rod; 52, knob two; 53, second screw rod; 54, limit slide plate; 55, sliding guide rod; 56, fixed plug plate; 561, push plate; 562, tightening column; 563, second spring; 564, tightening plate; 565, right-angle pressure plate; 566, push rod. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods:

[0026] like Figure 1-2As shown, the utility model provides a bottom beam of a tower crane, including a cross beam 1, four supporting seats 2 are fixedly connected to the top of the cross beam 1, half beams 3 are fixedly installed at the four ends of the cross beam 1, a connecting mechanism 4 is arranged on the top side of the half beam 3 close to the cross beam 1, a reinforcing rod 5 is fixedly installed on the adjacent side of the two half beams 3, a plug-in plate 11 is fixedly connected to the four ends of the cross beam 1, a T-shaped slot is provided on the side of the plug-in plate 11 away from the cross beam 1, a plug-in slot is provided at one end of the half beam 3 close to the cross beam 1, the plug-in plate 11 is slidably plugged into the inside of the plug-in slot, the connecting mechanism 4 includes a knob 41, the knob 41 is movably connected to the top side of the half beam 3 close to the cross beam 1, a bevel gear 42 is fixedly connected to the bottom of the knob 41, a movable slot is provided on the inside of the half beam 3 close to the cross beam 1, and the bevel gear 42 is movably connected to the inside of the movable slot The outer surface of the bevel gear 1 42 is meshedly connected with the bevel gear 2 43, and the side of the bevel gear 2 43 close to the cross beam 1 is fixedly connected with the first screw rod 44, and the side of the first screw rod 44 away from the bevel gear 2 43 penetrates into the interior of the plug-in slot and is threadedly connected with a threaded slide plate 45 on the outer surface, and sliding clamps 46 are provided on the upper and lower sides of the threaded slide plate 45, and the two sliding clamps 46 are respectively slidably clamped on the upper and lower sides of the T-shaped clamping slot, and the two sliding clamps 46 are slidably connected with two guide slides 47 that penetrate up and down at one end away from the cross beam 1, and the upper and lower ends of the guide slides 47 are respectively fixedly connected to the upper and lower sides of the inner wall of the plug-in slot, and the sliding clamps 46 are fixedly connected to the inner wall of the plug-in slot at the upper and lower sides, and the sliding clamps 46 are fixedly connected to the return spring 48 on the side of the sliding clamps 46 away from the threaded slide plate 45, and the upper and lower ends of the threaded slide plate 45 are arranged on the side close to the cross beam 1. The side of the sliding clamps 46 away from the cross beam 1 is arranged on the side of the sliding clamps 46

[0027] When the bottom beam is in use, the plug-in plate 11 is inserted into the inside of the plug-in slot, so that the sliding card plate 46 can be inserted into the T-shaped card slot, and by rotating the knob 1 41, the bevel gear 1 42 can drive the bevel gear 2 43 to rotate, and the first screw rod 44 can drive the threaded slide plate 45 to slide, so that the sliding card plates 46 on the upper and lower sides can slide along the guide slide column 47 through the mutual sliding of the inclined surface 1 and the inclined surface 2, and the reset spring 48 is squeezed, so that the sliding card plate 46 can clamp the inside of the T-shaped card slot, which is convenient for connecting and fixing the cross beam 1 and the half beam 3, improving the connection effect, and facilitating the use of the bottom beam.

[0028] like Figure 3As shown, the utility model provides a bottom beam of a tower crane, wherein a sliding card plate 46 comprises a sliding push plate 461, which is slidably connected to the outer surface of a guide slide column 47, a sliding groove 1 is provided inside the sliding push plate 461 near the cross beam 1, an oblique slide plate 462 is slidably connected inside the sliding groove 1, a first spring 463 is fixedly connected to the side of the oblique slide plate 462 near the threaded slide plate 45, an oblique push plate 464 is fixedly connected to the side of the oblique slide plate 462 away from the threaded slide plate 45, and the movement of the oblique push plate 464 away from the oblique slide plate 462 passes through the outside of the sliding push plate 461 and is fixedly connected to a sliding pressure plate 465;

[0029] When the inside of the T-shaped slot is clamped by the sliding clamping plate 46, the sliding pressure plate 465 will be pushed against the inner wall of the T-shaped slot by the sliding push plate 461, and at the same time, it will slide into the inside of the sliding slot through the inclined push plate 464, and the first spring 463 can be squeezed through the inclined slide plate 462, which makes it convenient to pull the sliding pressure plate 465 to press the inner wall of the T-shaped slot, so that the fixing effect is better.

[0030] like Figure 4 As shown, the utility model provides a bottom beam of a tower crane, and the reinforcing rod 5 includes a connecting rod 51, which is fixedly connected to one adjacent side of two half beams 3, and grooves are provided at both ends of the connecting rod 51 on the side away from the half beam 3, and a knob 2 52 is movably connected inside the groove, and a second screw rod 53 is fixedly connected to the side of the knob 2 52 close to the half beam 3, and a sliding groove 2 is provided at both ends of the connecting rod 51, and the side of the second screw 53 away from the knob 2 52 penetrates into the inside of the sliding groove 2 and is threadedly connected to a limiting slide plate 54 on the outer surface, and both ends of the limiting slide plate 54 are slidably connected to sliding guide rods 55, and both ends of the sliding guide rod 55 are fixedly connected to the inner wall of the sliding groove 2, and a fixed plug plate 56 is fixedly connected to the side of the limiting slide plate 54 away from the knob 2 52, and fixed slots are provided on both sides of the half beam 3 close to the two adjacent reinforcing rods 5, and one end of the fixed plug plate 56 away from the sliding guide rod 55 penetrates into the inside of the fixed slot;

[0031] When connecting the reinforcing rod 5, the reinforcing rod 5 is placed between the two half beams 3. By rotating the second knob 52, the second screw rod 53 can be driven to rotate, and the limiting slide plate 54 can slide along the sliding guide rod 55 in the sliding groove 2, so that the fixed plug plate 56 can be inserted into the interior of the fixed slot, and the reinforcing rod 5 can be fixed, making the installation of the reinforcing rod 5 more convenient and the use of the bottom beam more convenient.

[0032] like Figure 5As shown, the utility model provides a bottom beam of a tower crane, the fixed plug plate 56 includes a pushing plate 561, the pushing plate 561 is fixedly connected to the side of the limiting slide plate 54 away from the knob 2 52, a sliding groove 3 is provided inside the pushing plate 561, a tightening column 562 is slidably connected inside the sliding groove 3, an end of the tightening column 562 close to the limiting slide plate 54 is fixedly connected to the second spring 563, an end of the tightening column 562 away from the second spring 563 penetrates to the outside of the end of the pushing plate 561 away from the limiting slide plate 54 and is fixedly connected to the tightening plate 564, both ends of the tightening plate 564 are slidably connected to a right-angle pressing plate 565, the inner side of the right-angle pressing plate 565 is movably connected to a pushing rod 566, and an end of the pushing rod 566 away from the tightening plate 564 is movably connected to a side of the pushing plate 561 away from the limiting slide plate 54;

[0033] When the reinforcing rod 5 is fixed by the fixing plug plate 56, under the push of the pushing plate 561, the tightening plate 564 can tighten the inner wall of the fixing slot, and at the same time, the tightening column 562 will slide into the inside of the sliding slot three and can squeeze the second spring 563, which is convenient for pushing the right-angle pressure plate 565 to tighten the inner walls on both sides of the fixing slot through the pushing rod 566, so that the fixing effect of the reinforcing rod 5 is better.

[0034] The following is a detailed description of the working principle of the tower crane bottom beam.

[0035] like Figure 1-5 As shown, when the bottom beam is in use, the plug-in plate 11 is inserted into the inside of the plug-in slot, so that the sliding card plate 46 can be inserted into the T-shaped card slot, and by rotating the knob 1 41, the bevel gear 1 42 can drive the bevel gear 2 43 to rotate, and the first screw 44 can drive the threaded slide plate 45 to slide, so that the sliding card plate 46 can be pushed to clamp the inside of the T-shaped card slot, which is convenient for connecting and fixing the cross beam 1 and the half beam 3. After that, the reinforcing rod 5 is placed between the two half beams 3, and by rotating the knob 2 52, the second screw 53 can be driven to drive the limiting slide plate 54 to slide along the sliding guide rod 55, so that the fixed plug-in plate 56 can be inserted into the inside of the fixed slot, and the reinforcing rod 5 can be fixed, thereby improving the overall strength of the bottom beam, and the crane main frame can be connected only through the support seat 2, which is convenient for the use of the bottom beam.

[0036] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A tower crane bottom beam, comprising a cross beam (1), the top of the cross beam (1) being fixedly connected to four support seats (2), characterized in that: Half beams (3) are fixedly mounted on the four ends of the cross beam (1); a connection mechanism (4) is provided on the top of the half beam (3) close to the cross beam (1); and a reinforcing rod (5) is fixedly mounted on the adjacent sides of two half beams (3); The four ends of the cross beam (1) are all fixedly connected with a plug-in plate (11), a T-shaped slot is provided on a side of the plug-in plate (11) away from the cross beam (1), a plug-in slot is provided on an end of the half beam (3) close to the cross beam (1), the plug-in plate (11) is slidably plugged into the inside of the plug-in slot, the connecting mechanism (4) comprises a knob (41), the knob (41) is movably connected to a side of the top of the half beam (3) close to the cross beam (1), a bevel gear (42) is fixedly connected to the bottom of the knob (41), a movable slot is provided on a side of the inside of the half beam (3) close to the cross beam (1), the bevel gear (42) is movably connected to the inside of the movable slot, and the outer surface of the bevel gear (42) is meshingly connected to a bevel gear (43), The side of the bevel gear 2 (43) close to the cross beam (1) is fixedly connected with a first screw rod (44); the side of the first screw rod (44) away from the bevel gear 2 (43) penetrates into the interior of the plug-in slot and is threadedly connected with a threaded slide plate (45) on the outer surface; sliding clamps (46) are provided on the upper and lower sides of the threaded slide plate (45); the two sliding clamps (46) are respectively slidably clamped on the upper and lower sides of the T-shaped clamping slot; the ends of the two sliding clamps (46) away from the cross beam (1) are slidably connected with two guide slide columns (47) penetrating from top to bottom; the upper and lower ends of the guide slide columns (47) are respectively fixedly connected to the upper and lower sides of the inner wall of the plug-in slot; the side of the sliding clamp plate (46) away from the threaded slide plate (45) is fixedly connected with a return spring (48).

2. A tower crane bottom beam according to claim 1, characterized in that: The threaded slide plate (45) is provided with inclined surfaces 1 at both upper and lower ends on a side close to the cross beam (1), and the sliding clamping plate (46) is provided with inclined surfaces 2 on a side away from the cross beam (1).

3. The bottom beam of a tower crane according to claim 1, characterized in that: The sliding card plate (46) comprises a sliding push plate (461), wherein the sliding push plate (461) is slidably connected to the outer surface of the guide slide column (47), a sliding groove 1 is provided inside the sliding push plate (461) near the side of the cross beam (1), and an oblique sliding plate (462) is slidably connected inside the sliding groove 1.

4. A tower crane bottom beam according to claim 3, characterized in that: The side of the inclined slide plate (462) close to the threaded slide plate (45) is fixedly connected to a first spring (463), and the side of the inclined slide plate (462) away from the threaded slide plate (45) is fixedly connected to an inclined push plate (464). The movement of the inclined push plate (464) away from the inclined slide plate (462) passes through the outside of the sliding push plate (461) and is fixedly connected to a sliding pressure plate (465).

5. The bottom beam of a tower crane according to claim 1, characterized in that: The reinforcing rod (5) comprises a connecting rod (51), wherein the connecting rod (51) is fixedly connected to one side adjacent to the two half beams (3), and grooves are provided at both ends of the connecting rod (51) on the side away from the half beam (3), and a second knob (52) is movably connected inside the groove, and a second screw rod (53) is fixedly connected to the side of the second knob (52) close to the half beam (3), and a second sliding groove is provided at both ends of the connecting rod (51), and the side of the second screw rod (53) away from the second knob (52) penetrates into the interior of the second sliding groove and the outer surface is threadedly connected to a limiting slide plate (54).

6. A tower crane bottom beam according to claim 5, characterized in that: Both ends of the limit slide plate (54) are slidably connected to sliding guide rods (55), and both ends of the sliding guide rod (55) are fixedly connected to the inner wall of the second sliding groove. The side of the limit slide plate (54) away from the second knob (52) is fixedly connected to a fixed plug plate (56), and both sides of the half beam (3) close to the two adjacent reinforcing rods (5) are provided with fixed slots, and one end of the fixed plug plate (56) away from the sliding guide rod (55) penetrates into the interior of the fixed slot.

7. A tower crane bottom beam according to claim 6, characterized in that: The fixed plug plate (56) comprises a push plate (561), the push plate (561) is fixedly connected to the side of the limiting slide plate (54) away from the second knob (52), a sliding groove (3) is provided inside the push plate (561), a tightening column (562) is slidably connected inside the sliding groove (3), and a second spring (563) is fixedly connected to one end of the tightening column (562) close to the limiting slide plate (54).

8. The bottom beam of a tower crane according to claim 7, characterized in that: One end of the clamping column (562) away from the second spring (563) passes through the outside of one end of the pushing plate (561) away from the limiting slide (54) and is fixedly connected to the clamping plate (564), both ends of the clamping plate (564) are slidably connected to a right-angle pressure plate (565), and the inner side of the right-angle pressure plate (565) is movably connected to a pushing rod (566), and one end of the pushing rod (566) away from the clamping plate (564) is movably connected to a side of the pushing plate (561) away from the limiting slide (54).

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