CN219489383U - Portable well lid board hoisting accessory of scalable displacement - Google Patents

Abstract

The utility model discloses a portable manhole cover plate lifting device with telescopic variable distance, which comprises a main frame, a supporting leg, and a hoisting device capable of being hoisted on the main frame; the main frame includes a left moving frame, a fixed frame and a right moving frame; Among them, the left moving frame and the right moving frame are all connected with the fixed frame by sliding fit; the main frame is also equipped with a telescopic mechanism for adjusting the distance between the left moving frame and the right moving frame; each supporting leg includes a supporting leg body, a strut , a jack installed on one side of the supporting leg body, and a moving wheel installed on the lower part of the supporting leg body; one end of the strut is hinged to the main frame, and the other end is hinged to the supporting leg body; the left and right sides of the main frame are fixed with a Set of fixed wheels. The utility model can flexibly realize the adjustment of the middle opening through telescopic variable distance, is suitable for hoisting operation of manhole covers with different widths or lengths, is easy to store and unfold, labor-saving and convenient, convenient for transportation and storage, and can be widely popularized and applied.

Description

A portable manhole cover lifting device with telescopic and variable pitch

technical field

The utility model belongs to the technical field of engineering equipment, in particular to a manhole cover opening and covering device.

Background technique

With the continuous development of power grid engineering construction, overhead lines in urban areas are gradually replaced by underground cables. Cable corridors are used as special laying channels for underground cables, and cable trench covers have been widely used in power grid engineering. In order to facilitate the placement of cable wiring pulleys during cable laying and to have enough space for staff to overhaul, the cable manhole cover is generally made into a square shape. Among them, the ordinary concrete cover plate has become the main force of the cable well cover plate because of its simple material, low economic cost, and low manufacturing process requirements. However, it also has the disadvantages of large volume, heavy weight, and difficulty in uncovering/covering.

During the inspection and maintenance of cable lines, due to the lack of special cable manhole cover opening tools, construction personnel must manually open and cover the manhole cover. Especially for cable covers with larger specifications and sizes, multiple people need to work together, which is time-consuming, labor-intensive, extremely inefficient, and has certain hidden dangers to personal and equipment safety.

Aiming at the difficult problem of cable manhole cover cover operation, many units have carried out beneficial exploratory research. State Grid Zhejiang Changshan County Power Supply Company has developed a simple cable cover opening device, which uses a combination of L-shaped brackets and jacks to open the well cover. State Grid Zhejiang Electric Power Company Ningbo Power Supply Company has developed a new cable manhole cover lifting tool, which uses electro-hydraulic devices to lift the manhole cover.

But neither of these two devices can realize convenient movement, nor can it realize the flexible adjustment of the working position and working range, let alone fold and store. The above problems need to be solved urgently.

Contents of the invention

Purpose of the invention: In order to overcome the deficiencies in the prior art, the utility model provides a portable manhole cover lifting device with telescopic variable distance.

Technical solution: The utility model provides a portable manhole cover lifting device with telescopic variable distance, which includes a main frame, supporting legs, and a lifting device that can be hoisted on the main frame;

The main frame includes a left moving frame, a fixed frame and a right moving frame; wherein the left moving frame and the right moving frame are all connected with the fixed frame by sliding fit; the fixed frame is also provided with a winch; the main frame is also provided with There is a telescopic mechanism for adjusting the distance between the left and right moving frames;

Each support leg includes a support leg body, a support rod, a jack installed on one side of the support leg body, and a moving wheel installed at the lower part of the support leg body; one end of the support rod is hinged to the main frame, and the other end is hinged to the support leg body ;

A group of fixed wheels are fixedly arranged on the left and right sides of the main frame.

Preferably, the supporting legs are hinged to the main frame.

Preferably, the fixed frame includes two upper and lower hollow horizontal bars, two vertical bars located between the two hollow horizontal bars, and a second horizontal bar located between the two vertical bars.

Preferably, both the left moving frame and the right moving frame are C-shaped frames.

Preferably, both the jack and the moving wheel are fixed on the corresponding supporting leg body by bolts.

Preferably, the two sets of fixed wheels located on the left and right sides are all fixed on the fixed frame by bolts.

Preferably, the winch is fixed on the fixed frame by bolts.

Preferably, the jack is a jack with a lifting mechanism; the lifting mechanism is a lifting mechanism with a self-locking function.

Preferably, the hoisting device can be hoisted on the hook of the winch;

The hoisting device includes a cross arm and a suspension hook; wherein the suspension hook is mounted on the cross arm.

Further preferably, one end of the strut is detachably hinged to the main frame through a latch.

Further preferably, the other end of the strut is detachably hinged to the supporting leg body through a latch.

Further preferably, the telescopic mechanism includes two elevators;

The bases of the two lifts are symmetrically installed on the left and right sides of the fixed frame;

The screw nuts of the two elevators are respectively connected to the left moving frame and the right moving frame by bolts.

Preferably, the telescoping mechanism further includes a motor and a pulley fixed on the fixed frame;

The pulleys are connected with the worm shafts of the elevators through a synchronous belt transmission.

Preferably, the elevator is a screw elevator.

Preferably, the bases of the two lifts are fixed on the fixed frame by bolts.

Preferably, the pulley is connected to the motor by a key.

Preferably, the elevator and its corresponding worm shaft are keyed.

Beneficial effects: Compared with the prior art, the utility model provides a portable manhole cover lifting device with telescopic variable distance, which provides a gantry lifting type manhole cover lifting device. For support (each support leg falls on the well circle), moving the device along the well circle can realize the movement of the well cover plate, taking into account both stability and flexibility, effectively improving the convenience of cable well operation, and can be widely used in various application scenarios .

At the same time, based on the structure and structure of the utility model, the portable manhole cover lifting device with telescopic variable distance can flexibly realize the adjustment of the middle opening through the telescopic variable distance, so that it can be flexibly applied to different models with different widths or lengths. The manhole cover lifting operation has higher versatility and flexibility.

Furthermore, the utility model adopts front and rear foldable support legs, on the one hand, it is easy to directly push and move to different work places, and it is stable during operation and convenient to move; / While getting on and off the construction vehicle conveniently, the device can be folded and stored and unfolded on the ground on the basis of load-bearing support. It is labor-saving, convenient and easy to operate (only 1-2 people are needed for the entire equipment operation), which greatly improves the safety of the operation. , with high ease of use and flexibility.

On the whole, the portable manhole cover lifting device with telescopic and variable distance provided by the utility model can flexibly realize the adjustment of the middle opening through the telescopic variable distance, and is suitable for the lifting operation of manhole covers with different widths or lengths. It is easy to store, easy to unfold, and easy to move. The hoisted items such as cable manhole covers are also easy to move directly, labor-saving and convenient, easy to transport and store, high flexibility, good ease of use, and meet the flexibility and diversity of the cable manhole cover maintenance work site, which can be widely popularized and applied.

Description of drawings

Fig. 1 is a schematic front view of the structure of a portable manhole cover lifting device with telescopic variable distance provided by the embodiment;

Fig. 2 is a schematic left view of the structure of Fig. 1;

Fig. 3 is a schematic top view of the structure of Fig. 1;

Fig. 4 is the schematic assembly diagram of the structure of the left mobile frame, the fixed frame and the right mobile frame in Fig. 1;

Fig. 5 is the schematic diagram that the portable manhole cover board hoisting device of telescopic variable distance provided by the embodiment is in an extended state;

Fig. 6 is a schematic structural diagram of a portable manhole cover lifting device with telescopic variable distance provided by the embodiment in a folded storage state;

Fig. 7 is a schematic diagram of the telescopic variable distance portable manhole cover lifting device provided by the embodiment when it is folded and stored on the engineering vehicle;

Fig. 8 is a schematic structural diagram of the telescopic variable distance portable manhole cover lifting device provided by the embodiment in an operation or operation ready state.

Detailed ways

The technical scheme of the utility model will be further described in detail below through the embodiments and in conjunction with the accompanying drawings.

A portable manhole cover plate lifting device with telescopic variable distance provided in this embodiment, as shown in Figure 1, Figure 2, Figure 3, Figure 5 and Figure 6, it includes a main frame 4, support legs 3, and can be hoisted on The hoisting device 11 of the main frame 4;

The main frame 4 includes a left movable frame 15, a fixed frame 16 and a right movable frame 17; wherein the left movable frame 15 and the right movable frame 17 are all connected with the fixed frame 16 by slipping; the fixed frame 16 is also provided with a winch 10. The main frame 4 is also provided with a telescopic mechanism 7 for adjusting/adjusting the distance between the left moving frame 15 and the right moving frame 17;

Each support leg 3 all comprises a support leg body, a strut 5, a jack 2 installed on one side of the support leg body, and a moving wheel 1 installed at the bottom of the support leg body; wherein one end of the strut 5 is hinged to the bottom of the main frame 4 , the other end is hinged to the side wall of the supporting leg body;

A set of fixed wheels 6 are fixedly arranged on both left and right sides of the main frame 4 .

In this embodiment, the supporting legs 3 are hinged to the main frame 4 .

At the same time in this embodiment, as shown in Figure 3 and Figure 4, the fixed frame 16 includes two hollow cross bars 161 up and down, and two vertical bars 162 between the two hollow cross bars 161, and two vertical bars located between the two hollow cross bars 161. A second cross bar 163 between the first vertical bars 162. In some preferred embodiments, both the left moving frame 15 and the right moving frame 17 are C-shaped frames.

In this embodiment, specifically, as shown in FIG. 5 , the supporting leg 3 on the left side is hinged to the left moving frame 15 ; the supporting leg 3 on the right side is hinged to the right moving frame 17 .

In this embodiment, specifically, as shown in FIG. 3 , the bases of the two elevators 14 are symmetrically installed on the two vertical bars 162 of the fixed frame 16 from left to right; the motor 9 and the pulley 8 are fixedly arranged on the fixed frame 16 on the second crossbar 163.

In this embodiment, specifically, the two hollow cross bars 161 of the fixing frame 16 are made of hollow tubes. As shown in Figure 5, when the telescopic mechanism 7 shrinks, the left mobile frame 15 and the right mobile frame 17 are pulled closer by the left and right elevators 14, and more parts of the left mobile frame 15 and the right mobile frame 17 are gradually slid/stuffed into the two sides. In the hollow tube of root hollow cross bar 161; Slip out the hollow tubes of the two hollow cross bars 161 to achieve the effect of flexibly adjusting the opening (the middle opening, that is, the opening between the supporting legs).

In this embodiment, specifically, both the jack 2 and the moving wheel 1 are fixed on the corresponding supporting leg bodies by bolts. The two groups of fixed wheels 6 located on the left and right sides are all fixed on the fixed frame 16 by bolts. The winch 10 is fixed on the fixed frame 16 by bolts. In some preferred embodiments, as shown in FIG. 1 , FIG. 5 , FIG. 6 and FIG. 7 , the two sets of fixed wheels 6 located on the left and right sides are all fixed on the fixed frame 16 in the same direction (in the same direction) by bolts.

In this embodiment, the jack 2 is a jack with a lifting mechanism; the lifting mechanism is a lifting mechanism with a self-locking function.

In this embodiment, as shown in FIG. 1 and FIG. 5 , the hoisting device 11 can be hoisted (that is, hung) on the hook of the winch 10 . Specifically in this embodiment, the hoisting device 11 includes a cross arm 13 and two hooks 12 ; wherein the two hooks 12 are hung (or suspended) on both ends of the cross arm 13 .

In this embodiment, the strut 5 is a detachable strut 5 . Specifically, one end of the strut 5 is detachably hinged to the main frame 4 through a latch; the other end of the strut 5 is detachably hinged to the side wall of the supporting leg body through a latch. In this embodiment, as shown in FIG. 5 , one end of each strut 5 is detachably hinged to the bottom of the left moving frame 15 or the right moving frame 17 of the main frame 4 through a latch.

In this embodiment, as specifically shown in FIG. 3 , the telescopic mechanism 7 includes two elevators 14; The base is symmetrically installed on the left and right sides of the fixed frame 16, that is, on the two vertical rods 162; Screw mandrel is threadedly connected with right moving frame 17 and left moving frame 15 respectively.

In this embodiment, the telescoping mechanism 7 further includes a motor 9 and a pulley 8 fixed on the fixed frame 16; the pulley 8 is connected to the worm shafts of the elevators 14 through a synchronous belt transmission.

Specifically in this embodiment, as shown in Figure 3, the motor 9 and the pulley 8 are fixedly arranged on the second cross bar 163 of the fixed frame 16; 8 and the transmission of the synchronous belt drive/drive two elevators 14; that is: the motor 9 drives the pulley 8 to rotate, and the belt pulley 8 drives the elevator 14 to work through the transmission of the synchronous belt. The synchronous belt is wound around the pulley 8 and On the worm shaft of the elevator 14.

In some preferred embodiments, the lifter 14 is a screw lifter, such as a SWL screw lifter.

In this embodiment, the bases of the two elevators 14 are fixed on the fixed frame 16 by bolts. In some preferred embodiments, the pulley 8 is keyed to the motor 9 . In certain preferred embodiments, the elevator 14 and its corresponding worm shaft are keyed.

Taking the above-mentioned embodiment as an example, the working principle/workflow of the portable manhole cover lifting device with telescopic and variable distance provided by this embodiment is explained as follows:

When storing, remove the hoisting device 11, put away the jack 2, and start the telescopic mechanism 7 to make the lifting device of the portable manhole cover shrink to the shortest, push it to the tipping platform of the engineering vehicle, when the fixed wheel 6 on the right has been placed When on the platform, remove the pin on the support rod 5 corresponding to the right support leg 3, and continue to push up the platform, the right support leg 3 will automatically fold and go on the platform with the thrust until the left fixed wheel 6 is on the platform Platform, at this time, remove the latch on the support bar 5 corresponding to the left support leg 3, and turn the left support leg 3 onto the platform, so far, as shown in Figure 6 and Figure 7, the portable well cover lifting device can be The whole is folded and stored on the dump platform of the engineering vehicle.

When working/working or preparing for operation, move the portable manhole cover plate lifting device to the top of the manhole cover to be lifted, the moving wheel 1 corresponding to each supporting leg is located on the well ring, and put down the jack 2 corresponding to each supporting leg (the flat plate at the lower end of the jack) landing), so that the corresponding mobile wheels 1 of each support leg are off the ground, and the lifting operation can be carried out at this moment, and the operation is stable. The portable manhole cover lifting device with telescopic and variable distance provided by the utility model can be applied to the lifting operation of cover plates of different lengths/widths, such as the lifting of covers with a length of 1000-1740mm, and the device is easy to store and transport, and only needs 1-2 people can complete the operation.

When needing to move, then pack up the jack 2 corresponding to each support leg, make the moving wheel 1 corresponding to each support leg touch the ground, and then move or run.

When adjustment is required, for manhole covers of different widths/lengths, the telescopic mechanism 7 is activated, and the motor 9 drives/drives the pulley 8 and the timing belt, and then drives/transmits the two elevators 14 to work to draw in or open the left moving frame 15 and move the frame 17 to the right, so that the opening gear between the left and right sides of the device is adjusted to a suitable width/length, and the adapted cross arm 13 and hook 12 can be hoisted, that is, the cross arm 13 and the hanging The width of the two hooks 12 mounted on the cross arm 13 can be adapted/adapted to the width between the two corresponding hoisting holes on the manhole cover to be lifted (the corresponding adapted cross arm can be replaced as required during the period), as shown in Figure 1 As shown in Figure 5, the telescopic variable distance and opening adjustment of the portable manhole cover lifting device can be realized, which can flexibly meet the flexible and diverse application requirements of the cable manhole cover maintenance operation site, and has high versatility and ease of use.

The struts described herein may also be referred to as detachable struts. The "/" mentioned in the text means or.

What the utility model protects is the shape, structure and/or structure of the portable manhole cover plate lifting device provided with telescopic and variable distance. The above examples do not limit the utility model. Within the range, the various changes and modifications carried out all fall within the protection scope of the present utility model.

Claims (10)

1. A portable manhole cover lifting device with telescopic variable pitch, characterized in that: it comprises a main frame (4), supporting legs (3), and a hoisting device (11) that can be hoisted on the main frame (4); Described main frame (4) comprises left mobile frame (15), fixed frame (16) and right mobile frame (17); Wherein left mobile frame (15) and right mobile frame (17), all with fixed frame (16) sliding fit connection; the fixed frame (16) is also provided with a winch (10); the main frame (4) is also provided with a spacer for adjusting the distance between the left mobile frame (15) and the right mobile frame (17) telescopic mechanism (7); Each support leg (3) all comprises a support leg body, a strut (5), a jack (2) installed on one side of the support leg body, and a moving wheel (1) installed at the bottom of the support leg body; wherein the strut (5 ) is hinged with the main frame (4), and the other end is hinged with the supporting leg body; A group of fixed wheels (6) are fixedly arranged on the left and right sides of the main frame (4). 2. The telescopic variable distance portable manhole cover lifting device according to claim 1, characterized in that: the supporting legs (3) are hinged to the main frame (4); and/or Described fixed frame (16) comprises two hollow horizontal bars (161) up and down, and two vertical bars (162) between two hollow horizontal bars (161), and are positioned at two vertical bars (162) the second crossbar (163); and/or Both the left moving frame (15) and the right moving frame (17) are C-shaped frames. 3. The telescopic and variable-pitch portable well cover lifting device according to claim 1, characterized in that: the jack (2) and the moving wheel (1) are all fixed on the corresponding support leg body by bolts; and / or The two groups of fixed wheels (6) located on the left and right sides are all fixed on the fixed frame (16) by bolts; and/or The winch (10) is fixed on the fixed frame (16) by bolts. 4. The telescopic and variable distance portable manhole cover lifting device according to claim 1, characterized in that: the jack (2) is a jack with a lifting mechanism; the lifting mechanism is a lifting mechanism with a self-locking function. 5. The telescopic variable distance portable manhole cover lifting device according to claim 1, characterized in that: the lifting device (11) can be hoisted on the hook of the winch (10); The hoisting device (11) includes a cross arm (13) and a hook (12); wherein the hook (12) is hung on the cross arm (13). 6. The telescopic variable distance portable manhole cover lifting device according to claim 1, characterized in that: one end of the strut (5) is detachably hinged to the main frame (4) through a latch; and/or The other end of the strut (5) is detachably hinged to the supporting leg body through a latch. 7. The telescopic variable distance portable manhole cover lifting device according to claim 1, characterized in that: the telescopic mechanism (7) includes two elevators (14); The bases of the two elevators (14) are symmetrically installed on the left and right sides of the fixed frame (16); The screw nuts of the two elevators (14) are connected with the left moving frame (15) and the right moving frame (17) by bolts respectively. 8. The telescopic variable distance portable manhole cover lifting device according to claim 7, characterized in that: the telescopic mechanism (7) also includes a motor (9) and a pulley fixed on the fixed frame (16) (8); The pulley (8) is connected with the worm shafts of each elevator (14) through a synchronous belt drive. 9. The telescopic and variable distance portable manhole cover lifting device according to claim 7, characterized in that: the lifter (14) is a screw lifter. 10. The portable manhole cover hoisting device of telescopic and variable distance according to claim 8, characterized in that: the bases of the two lifts (14) are all fixedly installed on the fixed frame (16) by bolts; and/or The pulley (8) is keyed to the motor (9); and/or The elevator (14) and its corresponding worm shaft are keyed.