CN103434941B - folding crane - Google Patents

Abstract

The present invention discloses a kind of folding crane, comprise main support, hanger, lifting appliance, at least one pair of leg and folding supporting mechanism, described main support is stretching structure, the upper end pivot joint of described main support also supports one end of described hanger, lifting appliance described in the other end carry of described hanger, the lower end of described main support and one end pivot joint of described leg, one end of described supporting mechanism is articulated on described main support, and the other end of described supporting mechanism is articulated on described leg.Folding hanging function of the present invention saves a large amount of parking spaces, is conducive to carrying, and significantly enhances alerting ability and the convenience of use.

Description

folding crane

technical field

The invention relates to a crane, in particular to a folding crane which has a folding function, saves storage space and is convenient to carry.

Background technique

In production and life, it is often necessary to move goods from a low place to a high place, or unload them from a high place to a low place, but manual handling is time-consuming and laborious, and the work efficiency is very low. Therefore, the goods are usually transported by elevator or crane to ascend or descend. Existing lifts are generally used for large-scale goods, which are relatively large in volume and weight, and are generally difficult to move or move. Although they can transport or move large-scale goods, they are suitable for use in factories. However, for unloading or loading places Frequent changes, but difficult to carry manually, these lifts with poor flexibility and portability are obviously not suitable for use; and the above-mentioned lifts are large in size, take up a lot of space, and are very inconvenient to store.

Based on the above deficiencies, there is a need for a folding lift that has a folding function, saves storage space, and is easy to carry.

Contents of the invention

The object of the present invention is to provide a folding crane which has a folding function, saves storage space and is easy to carry.

In order to achieve the above object, the folding crane provided by the present invention includes a main support, a hanger, a lifting device, at least a pair of legs and a folding support mechanism, the main support is in a telescopic structure, and the upper end of the main support is pivoted and supported One end of the hanger, the other end of the hanger is mounted with the lifting device, the lower end of the main bracket is pivotally connected to one end of the leg, and one end of the support mechanism is pivotally connected to the main bracket , the other end of the support mechanism is pivotally connected to the support foot.

Preferably, the support mechanism includes a first support rod, a second support rod and an anti-rotation mechanism, one end of the first support rod is pivotally connected to the main bracket, and the other end of the first support rod is connected to the One end of the second support rod is pivotally connected, the other end of the second support rod is pivotally connected to the support foot, and the anti-rotation mechanism is arranged between the first support rod and the second support rod and opposite to each other. The first support rod and the second support rod are locked. Since the main bracket will be under greater pressure during work, by using the support mechanism to make the first support rod and the second support rod support the main bracket, on the one hand, the main bracket can be strengthened The strength prevents the main bracket from being broken due to huge pressure. On the other hand, the support mechanism can be folded so that it can be folded when not in use to reduce the occupied space and facilitate portability. In addition, by setting the anti-rotation mechanism between the first support rod and the second support rod, and locking the first support rod and the second support rod, the support mechanism can support the The main support will not be accidentally folded during the process, ensuring the stability of the main support when it is supported, and improving the safety of the folding crane.

Specifically, the anti-rotation mechanism includes a positioning member, a positioning nail and an elastic member, one end of the positioning member is pivotally connected to any one of the first support rod and the second support rod, and the positioning member has a hole, the positioning nail passes through the through hole and is fixed on the support rod pivotally connected with the positioning member, the elastic member is arranged between the positioning member and the nail head of the positioning nail, and the positioning The component has a positioning groove with two ends open, and the positioning groove accommodates the two ends of the first support rod and the second support rod which are pivotally connected to each other. Since a positioning groove is provided on the positioning member, when the two ends of the first support rod and the second support rod are pivotally connected to each other overlap, the positioning groove is used to accommodate the first support rod and the second support rod at the same time. support rod, so that the relative pivot between the first support rod and the second support rod is restricted by the positioning groove; and the elastic force provided by the elastic member to the positioning member is used to make the positioning The component is kept contained outside the first support rod and the second support rod, so as to achieve the purpose of locking. When it needs to be folded, it only needs to move the positioning part, and the structure is simple and the operation is convenient.

More specifically, the positioning member includes a plate, the two side edges of the plate extend vertically from the two side plates, and the positioning groove is formed between the two side plates and the plate.

More specifically, the first support rod is provided with a positioning protrusion, and the end of the second support rod is provided with a limiting area. When the first support rod is unfolded relative to the second support rod, the positioning The protrusion interferes with the side wall of the limiting area. The cooperation between the positioning protrusion and the limiting area can limit the deployment angle of the second support rod and the first support rod, so as to prevent them from being opened excessively, and also play a positioning role for the support feet.

Preferably, the main support is a straight ladder that stretches up and down.

Preferably, the folding crane further includes a pair of rollers, and the rollers are arranged at the lower end of the main bracket. The rollers can reduce the friction between the main support and the ground, so that the folding crane can quickly transfer the hoisted goods, which greatly enhances the flexibility of movement.

Preferably, the folding crane further includes auxiliary wheels, and the auxiliary wheels are arranged at the other end of the legs. The rollers can reduce the friction between the feet and the ground, further enhancing the mobility of the folding crane.

Preferably, a support is provided at the upper end of the main bracket, and the support has a pivot portion and a bearing portion, and the two side walls of the pivot portion extend horizontally and are integrally connected with the bearing portion. Using the pivot joint, the hanger can rotate around the pivot shaft of the pivot joint, so that it can be folded relative to the main bracket to achieve the purpose of folding; and by setting the bearing part, when the When the hanger is opened relative to the main bracket, the bearing part can prevent the hanger from continuing to rotate and effectively carry the hanger, thereby providing a strong support for the hanger and preventing the cargo from being overweight and crushed. disconnect the hanger.

Preferably, the folding crane further includes a battery box for supplying power to the lifting device, and the battery box is arranged on the hanger. By arranging the battery box, the lifting device can be supplied with power at any place. Therefore, it can get rid of the restrictions of fixed power supply and wires, further improve the mobility of the folding crane, and make it more convenient to use.

Compared with the prior art, because the present invention pivotally connects and supports the hanger to the upper end of the main bracket, the hanger can rotate relative to the main bracket and approach each other, thereby realizing folding; By pivotally connecting the legs to the lower end of the main bracket, and pivoting the support mechanism between the main bracket and the legs, and the support mechanism is in a foldable form, the legs can be positioned relative to the When the main bracket is folded, the support mechanism can also be folded along with the legs; in addition, because the main bracket is a telescopic structure, the main bracket can be further folded, therefore, the hanger, the main bracket , After the legs and supporting mechanism are folded, the folding crane realizes a high degree of folding, and the folded volume is greatly reduced. On the one hand, it can save a lot of storage space, on the other hand, it is convenient for carrying, and greatly enhances the flexibility of use. sex and convenience.

Description of drawings

Fig. 1 is a structural schematic diagram of the folding crane of the present invention.

Fig. 2 is an exploded schematic view of the folding crane of the present invention.

Fig. 3 is a structural schematic diagram of the support member in the folding crane of the present invention.

Fig. 4 is a structural schematic diagram of the supporting mechanism in the folding crane of the present invention.

Fig. 5 is an exploded schematic view of the supporting mechanism in the folding crane of the present invention.

Fig. 6 is a structural schematic diagram of the positioning member in the folding crane of the present invention.

Fig. 7 is a schematic diagram of the folding state of the folding crane of the present invention.

Fig. 8 is a schematic diagram of a fully folded state of the folding crane of the present invention.

detailed description

In order to describe the technical content, structural features, and achieved effects of the present invention in detail, the following will be described in detail in conjunction with the embodiments and accompanying drawings.

As shown in Figure 1, Figure 2 and Figure 3, the folding crane 100 of the present invention includes a main support 1, a hanger 2, a lifting device 3, a pair of legs 4, a pair of folding support mechanisms 5, a pair of rollers 6, a To training wheel 7 and battery box 8. The main support 1 is a telescopic structure. Specifically, the main support 1 is a straight ladder. The straight ladder has two left and right ladder columns 11 and some cross bars 12 connected between the ladder columns 11. The two ladder columns 11 have multi-section ladders. The adjacent ladder rods are socketed with each other, so that the straight ladder can be stretched up and down. The upper ends of the two ladder columns 11 are respectively provided with supports 13. The hanger 2 is composed of two parallel beams 21. One end of the two beams 21 is pivotally connected with the supports 13. When the hanger 2 is in a horizontal state, the supports 13 The support beam 21; specifically, the support member 13 has a pivot portion 13a and a bearing portion 13b, and the two side walls of the pivot portion 13a extend horizontally and are integrally connected with the bearing portion. Utilizing the pivot joint 13a, the beam 21 can rotate around the pivot shaft of the pivot joint 13a, so that it can be folded relative to the main bracket 1 to achieve the purpose of folding; When opened, the carrying portion 13b can prevent the beam 21 from continuing to rotate and effectively carry the beam 21 , thereby providing a strong support for the beam 21 and preventing the beam 21 from being broken due to the weight of the cargo. The other end of crossbeam 21 is mounted hoisting device 3 devices. The battery box 8 is fixedly arranged between the two beams 21 , and batteries are installed in the battery box 8 so as to supply power to the hoisting device 3 . By setting the battery box 8, the lifting device 3 can be supplied with power when the folding crane 100 is in any place. Therefore, it can break away from the limitation of fixed power supply and wires, further improve the mobility of the folding crane 100, and make it more convenient to use.

Referring to Fig. 1 and Fig. 2 again, one end of the two legs 4 is respectively pivotally connected to the lower ends of the two ladder columns 11. Specifically, the lower ends of the ladder columns 11 are covered with a socket 11a, and the socket 11a extends horizontally out of the pivot joint. At the end, the supporting legs 4 are placed horizontally and one end is pivotally connected to the pivoting end. When the two supporting legs 4 are opened, they form a figure-eight structure. The roller 6 is arranged at the lower end of the ladder post 11 . The rollers 6 can reduce the friction between the main support 1 and the ground, so that the folding crane 100 can quickly transfer the hoisted goods, which greatly enhances the flexibility of movement. The auxiliary wheel 7 is arranged on the other end of the leg 4 . The rollers 6 can reduce the friction between the feet 4 and the ground, further enhancing the mobility of the folding crane 100 .

As shown in FIG. 4 , FIG. 5 and FIG. 6 , one end of the supporting mechanism 5 is pivotally connected to the main frame 1 , and the other end of the supporting mechanism 5 is pivotally connected to the leg 4 . Specifically, a pivot member 12a is fixed on the side of a horizontal bar 12 located at the bottom of the vertical ladder; the support mechanism 5 includes a first support bar 51, a second support bar 52 and an anti-rotation mechanism 53; the first support bar One end of the first support rod 51 is pivotally connected to one end of the pivot member 12a, the other end of the first support rod 51 is pivotally connected to one end of the second support rod 52, and the end of the first support rod 51 and the second support rod 52 are pivotally connected to each other. A part is in an overlapping state; the other end of the second support rod 52 is pivotally connected to the side of the middle part of the support leg 4 . When the two support mechanisms 5 were opened, they were in a figure-eight structure. The anti-rotation mechanism 53 is arranged on the first support rod 51, and the anti-rotation mechanism 53 includes a positioning member 531, a positioning nail 532, an elastic member 533 and a washer 534, and one end of the positioning member 531 is pivotally connected to the first support rod 51 for positioning. The member 531 has a through hole 531a, the positioning nail 532 passes through the through hole 531a and is fixed on the first support rod 51, the gasket 534 is sleeved on the positioning nail 532 and is located between the fixed head member 531 and the positioning nail 532, and the elastic member 533 is sleeved on the positioning nail 532 and disposed between the washer 534 and the nail head of the positioning nail 532 . Because main support 1 can be subjected to greater pressure when working, therefore, by utilizing support mechanism 5, make first support bar 51 and second support bar 52 support main support 1, can strengthen the intensity of main support 1 on the one hand, prevent The main support 1 is broken due to the huge pressure. On the other hand, the support mechanism 5 can be folded, so that it can be folded when not in use to reduce the occupied space and facilitate portability. In addition, by setting the anti-rotation mechanism 53 between the first support rod 51 and the second support rod 52, and locking the first support rod 51 and the second support rod 52, the support mechanism 5 can support the main bracket 1. During the process, it will not be accidentally folded, so as to ensure the stability of the main support 1 when it is supported, and improve the safety of the folding crane 100 in use. More specifically, the first support rod 51 is provided with a positioning protrusion 51a, and the end of the second support rod 52 is provided with a limiting area 52a, when the first support rod 51 is opposite to the second support rod 52 When unfolded, the positioning protrusion 51a interferes with the side wall of the limiting area 52a. The cooperation between the positioning projection 51a and the limiting area 52a can limit the expansion angle of the second support rod 52 and the first support rod 51, thereby preventing them from being opened excessively. Positioning role.

Referring again to Fig. 5 and shown in Fig. 6, the locating member 531 includes a plate 531b, the two side edges of the plate 531b extend vertically from the two side plates 531c, and a positioning groove 531d is formed between the two side plates 531c and the plate 531v, and the positioning groove 531d is open at both ends. One end of the board 531b is provided with an outwardly bent operating portion 531e. The first support rod 51 and the second support rod 52 are flat, with the same structure and size. The width of the positioning groove 531d is slightly larger than the width of the first support rod 51. When the first support rod 51 and the second support rod 52 are partially When overlapping, the positioning groove 531d accommodates the two ends of the first support rod 51 and the second support rod 52 which are pivotally connected to each other. Since the positioning groove 531d is set on the positioning member 531, the first supporting rod 51 and the second supporting rod 52 are accommodated at the same time by using the positioning groove 531d, thereby realizing that the positioning groove 531d restricts the first supporting rod 51 and the second supporting rod 52. and use the elastic force provided by the elastic member 533 to the positioning member 531, so that the positioning member 531 is kept contained outside the first support rod 51 and the second support rod 52, thereby achieving the purpose of locking. When it needs to be folded, it is only necessary to move the operation part 531e. The operation part 531e can conveniently unlock the first support rod 51 and the second support rod 52 manually, and has a simple structure and convenient operation.

Based on the above and in combination with Fig. 7 and Fig. 8, the folding process of the folding crane 100 of the present invention is described in detail below, as follows:

When the folding crane 100 is fully opened, the vertical ladder is in a vertical state and fully extended upwards, the hanger 2 positioned at the upper end of the straight ladder is in a horizontal state, the legs 4 are horizontal and are located on the same side of the hanger 2, and the two legs 4 It is in a figure-eight shape; the first support rod 51 and the second support rod 52 partially overlap and form a straight line, and the positioning groove 531d of the positioning member 531 is contained in the overlapping part of the first support rod 51 and the second support rod 52, and the positioning The protrusion 51a is located in the limiting area 52a; at this time, the first support rod 51 and the second support rod 52 are in a locked state and cannot pivot to each other.

When the foldable crane 100 needs to be folded, the hanger 2 is turned over manually so that the hanger 2 rotates around the pivot point so as to be close to the ladder column 11. When the hanger 2 is rotated to be roughly parallel to the ladder column 11, the hanger 2 Fold completely; then manually move the locating member 531 to rotate the locating member 531; The second support rod 52 swings, and the second support rod 52 drives the first support rod 51 to swing upwards. When the support foot 4 is roughly parallel to the ladder column 11, the support foot 4 is completely folded, and at this time, the first support rod 51 and the second support The rods 52 are folded over each other. At this time, the folding crane 100 can be completely folded.

Because the present invention pivots and supports the hanger 2 on the upper end of the main bracket, therefore, the hanger 2 can rotate relative to the main bracket 1 and approach each other, thereby realizing folding; , and the supporting mechanism 5 is pivotally connected between the main bracket 1 and the supporting leg 4, and the supporting mechanism 5 is in a foldable form, so that the supporting leg 4 can be folded relative to the main bracket 1, and the supporting mechanism 5 can also be folded along with the supporting leg 4 In addition, since the main support 1 is in a telescopic structure, the main support 1 can be further folded. Therefore, after the hanger 2, the main support 1, the legs 4 and the support mechanism 5 are folded, the folding crane 100 realizes a high degree of folding. The size of the rear is greatly reduced, on the one hand, it can save a lot of storage space, on the other hand, it is conducive to carrying, which greatly enhances the flexibility and convenience of use.

The supporting legs 4 and the folded support mechanism 5 of the present invention can also be arranged in two pairs, distributed under the main support 1, so that the main support 1 is supported front, rear, left and right, and the support is more firm and stable. Therefore, the above-mentioned embodiment only cites one of the forms of the present invention, which certainly cannot limit the scope of rights of the present invention. Therefore, equivalent changes made according to the patent scope of the present invention still belong to the scope covered by the present invention.

Claims (8)

1. A folding crane, characterized in that: it comprises a main support, a hanger, a lifting device, at least a pair of legs and a folding support mechanism, the main support is a telescopic structure, and the upper end of the main support is pivoted and supported One end of the hanger, the other end of the hanger is mounted with the lifting device, the lower end of the main bracket is pivotally connected to one end of the leg, and one end of the support mechanism is pivotally connected to the main bracket , the other end of the support mechanism is pivotally connected to the foot; the support mechanism includes a first support rod, a second support rod and an anti-rotation mechanism, and one end of the first support rod is pivotally connected to the main bracket Above, the other end of the first support rod is pivotally connected to one end of the second support rod, the other end of the second support rod is pivotally connected to the foot, and the anti-rotation mechanism is arranged on the first The first support rod and the second support rod are locked between a support rod and the second support rod; the anti-rotation mechanism includes a positioning piece, a positioning nail and an elastic piece, and one end of the positioning piece is pivotally connected to the On the first support rod, the positioning member has a through hole, the positioning nail passes through the through hole and is fixed on the first support rod, and the elastic member is arranged on the positioning member and the positioning nail. Between the nail heads, the positioning member has a positioning slot with two ends open, and the positioning slot accommodates the two ends of the first support rod and the second support rod which are pivotally connected to each other. 2. The folding crane according to claim 1, characterized in that: the positioning member includes a plate, the two side edges of the plate extend vertically from the two side plates, and the distance between the two side plates and the plate The positioning grooves are formed between them. 3. The folding crane according to claim 1, characterized in that: the first support rod is provided with a positioning protrusion, and the end of the second support rod is provided with a limiting area, when the first support rod When unfolded relative to the second support rod, the positioning protrusion is in contact with the side wall of the limiting area. 4. The folding crane according to claim 1, characterized in that: the main support is a straight ladder that stretches up and down. 5. The folding crane according to claim 1, characterized in that: the folding crane further comprises a pair of rollers, and the rollers are arranged at the lower end of the main bracket. 6. The folding crane as claimed in claim 1, characterized in that: the folding crane further comprises auxiliary wheels, and the auxiliary wheels are arranged at the other end of the legs. 7. The folding crane according to claim 1, characterized in that: the upper end of the main bracket is provided with a support, the support has a pivot portion and a bearing portion, and the two side walls of the pivot portion are horizontal extending and integrally connected with the bearing part. 8. The folding crane according to claim 1, characterized in that: the folding crane further comprises a battery box for supplying power to the lifting device, and the battery box is arranged on the hanger.