CN207538843U - Waterproof cloth trolley steel cable swelling device - Google Patents

Abstract

The utility model discloses a steel rope tensioning device for a waterproof cloth trolley. The main frame is installed on the frame of the waterproof cloth trolley. The pulley mounting base is connected, the movable pulley is installed on the movable pulley mounting base, the two fixed pulley mounting bases are respectively installed on the main frame, the two fixed pulleys are respectively installed on the two fixed pulley mounting bases, and the movable pulley is located on the two fixed pulley mounting bases. Between but different heights, the steel rope goes around the first fixed pulley, the movable pulley and the second fixed pulley in turn. The utility model realizes small self-adaptive adjustment and relatively large manual adjustment of the vertical position of the movable pulley by setting the movable pulley and using the spring and the screw rod, which effectively solves the problem of the steel rope caused by various reasons during the use of the steel rope. The problem of not working properly caused by the change of tightness, and avoiding the risk of steel rope breakage, is safe and reliable to use.

Description

Steel rope tensioning device for tarpaulin trolley

technical field

The utility model relates to an auxiliary device for a waterproof cloth trolley, in particular to a steel rope tensioning device for a waterproof cloth trolley.

Background technique

The tarpaulin trolley is a kind of engineering trolley used for laying waterproof cloth in the tunnel. Its basic principle is: use the winch installed in the middle of the trolley to drive the steel ropes, and the steel ropes are distributed on both sides of the trolley. A waterproof cloth is installed in the middle of the top, and the steel ropes on both sides respectively drive the waterproof cloth to lay on the circular inner wall of the tunnel to both sides and downward. During the working process, the steel rope distributed on both sides of the trolley and driven by the winch pulls the waterproof cloth and moving components, so that the waterproof cloth and moving components move on the tracks on both sides of the trolley.

In practical applications, due to the insufficient precision of the track, the change of the position of the tarpaulin, the tension of the steel rope changes, and the flexibility of the steel rope itself, the tightness of the steel rope itself will eventually change at different times. The steel rope moves with the hoist through friction, and the change in the tightness of the steel rope may cause the friction to change. When the friction between the steel rope and the hoist is small, the steel rope will slip on the hoist, eventually resulting in failure to work .

In the past, the method commonly used to solve the above problems is: hang a counterweight (such as a certain weight of cement block) on the steel rope, and rely on the gravity of the counterweight itself to effectively tighten the steel rope to ensure the friction between the steel rope and the hoist. However, this method makes the counterweight suspended in the air, and the steel rope and the pulley on the counterweight are constantly rubbed, which easily causes the steel rope to break, thereby causing a safety accident.

Utility model content

The purpose of this utility model is to provide a safe and reliable steel rope tensioning device for tarpaulin trolley in order to solve the above problems.

The utility model realizes above-mentioned purpose through following technical scheme:

A steel rope tensioning device for a waterproof cloth trolley, the frame of the waterproof cloth trolley is provided with a steel rope for pulling the waterproof cloth, and the steel rope tensioning device for the waterproof cloth trolley includes a main frame, a screw rod, Nut, spring, movable pulley, movable pulley mount, fixed pulley and fixed pulley mount, the main frame is installed on the frame, the nut is threaded on the vertical screw rod, the One end of the screw rod is connected with one end of the spring, the nut and the spring are respectively located on the upper and lower sides of the horizontal frame of the main frame, the other end of the spring is connected with the movable pulley mounting seat, the The movable pulley is installed on the movable pulley mounting seat, and the two fixed pulley mounting seats arranged horizontally and with the same height are installed on the main frame respectively, and the two fixed pulleys are installed on the two fixed pulleys respectively. On the mounting seat, the movable pulley is located between the two fixed pulleys but at different heights, and the steel rope goes around the first fixed pulley, the movable pulley and the second fixed pulley in sequence.

In the above structure, the main frame is used as the installation basis of the entire steel rope tensioning device, and its specific structure is determined according to actual needs, as long as it meets the requirements of use; the screw rod is used as the installation basis of the spring and cooperates with the nut to realize the tension of the spring. Adjustment; On the one hand, the spring realizes the small self-adaptive adjustment of the vertical position of the movable pulley through its own stress, so as to realize the small self-adaptive adjustment of the tension of the steel rope; Larger adjustment to the vertical position and larger adjustment of the tension of the steel rope; the movable pulley is used to cooperate with the movable pulley mounting seat, spring and screw rod to realize its own vertical position adjustment, so as to realize the tension of the steel rope The fixed pulley and the fixed pulley mounting seat cooperate to realize the positioning and direction changing functions of the steel rope, so as to cooperate with the movable pulley to realize the tension adjustment of the steel rope.

In order to prevent the horizontal selection of the movable pulley from affecting the movement of the steel rope, the mounting seat of the movable pulley is non-circular and is limited by the vertical frame of the main frame so that it cannot rotate in the horizontal direction and can only move up and down; in order to facilitate processing, The mounting seat of the movable pulley is square, and the vertical frame of the main frame encloses to form a central space with a square cross section.

Specifically, the horizontal frame of the main frame is a horizontal steel plate, the vertical frame of the main frame is two double-channel steel, and the two ends of the double-channel steel are respectively welded and connected with the two horizontal steel plates, and the installation of the The horizontal steel plate of the screw rod is provided with a screw rod through hole for the screw rod to pass through, and the lower horizontal steel plate is provided with a steel rope through hole for the steel rope to pass through.

Specifically, two first ear plates are installed on the movable pulley mounting seat, a first pin shaft is installed between the two first ear plates, a first bearing is provided in the middle of the movable pulley, and the The first bearing is sleeved on the first pin shaft; the mounting seat of the fixed pulley is two second ear plates, and the second pin shaft is installed between the two second ear plates, and the middle part of the fixed pulley A second bearing is provided, and the second bearing is sleeved on the second pin shaft.

In order to achieve a better tensioning effect of the steel rope, the diameter of the movable pulley is larger than that of the fixed pulley.

In order to control the vertical movement of the lead screw, a rotating handle for manually rotating the nut is provided on the outside of the nut.

In order to facilitate the rotation of the nut, a gasket is provided between the nut and the main frame.

Specifically, the upper end of the screw rod passes through the cross frame of the main frame and is connected to the nut, the lower end of the screw rod is connected to the spring, the spring is a tension spring, and the two fixed pulleys The mounting bases are installed on both sides of the lower part of the main frame respectively.

The beneficial effects of the utility model are:

The utility model realizes the small-range self-adaptive adjustment and relatively large-scale manual adjustment of the vertical position of the movable pulley by setting the movable pulley and the spring and the screw rod, so that the steel rope of the tarpaulin trolley is tight no matter it is caused by too long use time. Whether the tension is slightly reduced or the tightness of the steel rope is greatly reduced due to the change of the position of the trolley parts, the tightness can be adjusted quickly, which effectively solves the problem of the change in the tightness of the steel rope caused by various reasons during the use of the steel rope. The problem of not working properly, and no counterweight is needed, and the steel rope is in contact with the pulley, which reduces friction and avoids the risk of steel rope breaking, and is safe and reliable to use.

Description of drawings

Fig. 1 is the front view structure diagram of the waterproof cloth trolley adopting the steel rope tensioning device of the waterproof cloth trolley described in the utility model;

Fig. 2 is a front structural schematic diagram of the steel rope tensioning device of the tarpaulin trolley described in the utility model;

Fig. 3 is a right view structural diagram of the steel rope tensioning device of the tarpaulin trolley according to the utility model.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described:

As shown in Figure 1, the frame of the waterproof cloth trolley 1 described in the utility model is provided with a steel rope 8 for pulling the waterproof cloth 5, and a telescopic hydraulic cylinder 3, an air bag 4, and a hydraulic station 2 are also shown in Figure 1 , hoist 6, pulley 7, trackless walking system 10 and the waterproof cloth trolley steel rope tensioning device 9 described in the utility model, wherein the waterproof cloth 5, steel rope 8, telescopic hydraulic cylinder 3, air bag 4, hydraulic station 2, Hoist 6, pulley 7 and walking system 10 all are existing conventional structures of waterproof cloth trolley 1, and waterproof cloth trolley steel rope tensioning device 9 is the new structure of the present utility model; As shown in Figure 2 and Figure 3, this The steel rope tensioning device 9 of the tarpaulin trolley described in the utility model includes a main frame 14, a screw mandrel 11, a nut 12, a gasket 13, an extension spring 15, a movable pulley 18, a movable pulley mounting seat 16, a first ear plate 17, Fixed pulley 24 and second ear plate 22, main frame 14 is installed on the frame of tarpaulin trolley 1, and main frame 14 comprises horizontal frame and vertical frame, and the horizontal frame of main frame 14 is horizontal steel plate, and the vertical frame of main frame 14 The frame is two double-channel steels, and the two double-channel steels encircle to form a central space with a square cross section. The top is provided with a screw hole for the screw rod 11 to pass through, and the lower horizontal steel plate is provided with a steel rope through hole for the steel rope 8 to pass through. The movable pulley mounting seat 16 is square and is supported by the vertical frame of the main frame. The limit makes it unable to rotate in the horizontal direction and can only move up and down. The upper end of the screw mandrel 11 passes through the screw mandrel through hole on the transverse steel plate on the top of the main frame 14 and the gasket on the gasket 13 from bottom to top successively. The hole is connected with the nut 12. The gasket 13 is arranged between the nut 12 and the upper horizontal steel plate of the main frame 14. The nut 12 is set on the vertical screw rod 11 by threads. The rotary handle of 12, the lower end of screw mandrel 11 is connected with the upper end of extension spring 15, and the lower end of extension spring 15 is connected with movable pulley mount 16, and the bottom of movable pulley mount 16 is equipped with two first ear plates 17, two The first pin shaft 19 is installed between the first lugs 17, the middle part of the movable pulley 18 is provided with the first bearing 25, the first bearing 25 is sleeved on the first pin shaft 19, two groups of horizontally arranged and the same height of the second Ear plates 22 are installed on both sides of the bottom of main frame 14 through ear plate bolts 20 and ear plate nuts 21 respectively, and two fixed pulleys 24 are installed on two groups of second ear plates 22 respectively, and each group of second ear plates 22 includes two second lugs 22, a second pin 23 is installed between the two second lugs 22 in each group, the middle part of the fixed pulley 24 is provided with a second bearing 26, and the second bearing 26 is sleeved on On the second bearing pin 23, the heights of the two fixed pulleys 24 are the same, the movable pulley 18 is located between the two fixed pulleys 24 but different in height, the movable pulley 18 is higher than the two fixed pulleys 24, and the steel rope 8 walks around the first A fixed pulley 24, a movable pulley 18 and a second fixed pulley 24, the diameter of the movable pulley 18 is greater than the diameter of the fixed pulley 24.

As shown in Figure 1, Figure 2 and Figure 3, when in use, since the steel rope 8 pulls the waterproof cloth 5 from both sides of the waterproof cloth trolley 1, the utility model adopts two waterproof cloth trolley steel ropes to tighten The device 9 is to respectively connect or weld the main frame 14 of the steel rope tensioning device 9 of the two waterproof cloth trolleys to the position corresponding to the steel ropes 8 on both sides on the frame of the waterproof cloth trolley 1, and the steel ropes on both sides The rope 8 enters the inside of the tensioning device from the first fixed pulley 24 of the steel rope tensioning device 9 of the corresponding tarpaulin trolley, then bypasses the movable pulley 18 to change direction, and leaves the tensioning device from the second fixed pulley 24 . Since the steel rope 8 is longer, and the objects connected by the steel rope 8 are not the same in different positions, the flexibility of the steel rope 8 itself changes, and the friction with the hoist 6 changes. For example, when the tightness of the steel rope 8 changes (generally decreases), the height of the screw 11 can be adjusted by rotating the nut 12, thereby adjusting the height of the movable pulley 18. If the tightness of the steel rope 8 changes little, it can be adjusted by The extension spring 15 in the device is directly self-adaptively adjusted, finally ensuring that the steel rope 8 is always in a tight state.

According to the actual installation position of the main frame 14, the above structure can also be changed as follows:

Movable pulley 18 is lower than two fixed pulleys 24, and nut 12 is installed in the lower end of screw mandrel 11, and tension spring 15 is changed into compression spring and is installed in the upper end of screw mandrel 11, and other structures carry out corresponding adaptive change and get final product; The structure is essentially the same as the above structure, except that the extension spring 15 is changed into a compression spring to adapt to the position change of the movable pulley 18 and the fixed pulley 24.

The above-described embodiments are only preferred embodiments of the present utility model, and are not limitations to the technical solutions of the present utility model. As long as the technical solutions that can be realized on the basis of the above-mentioned embodiments without creative work, all should be regarded as falling into the scope of this invention. within the protection scope of utility model patents.

Claims (9)

1. A steel rope tensioning device for a waterproof cloth trolley, the frame of the waterproof cloth trolley is provided with a steel rope for pulling the waterproof cloth, it is characterized in that: the steel rope tensioning device for the waterproof cloth trolley includes Main frame, screw mandrel, nut, spring, movable pulley, movable pulley mounting seat, fixed pulley and fixed pulley mounting seat, the main frame is installed on the frame, and the nut is threaded on the vertical On the screw mandrel, one end of the screw mandrel is connected with one end of the spring, the nut and the spring are respectively located on the upper and lower sides of the horizontal frame of the main frame, and the other end of the spring is connected with the movable pulley The mounting base is connected, the movable pulley is installed on the movable pulley mounting base, and the two fixed pulley mounting bases arranged horizontally and with the same height are installed on the main frame respectively, and the two fixed pulleys are installed on the main frame respectively. On the mounting bases of the two fixed pulleys, the movable pulleys are located between the two fixed pulleys but have different heights, and the steel ropes go around the first fixed pulley, the movable pulley and the second The fixed pulley. 2. The steel rope tensioning device for tarpaulin trolley according to claim 1, characterized in that: the movable pulley mounting seat is non-circular and is limited by the vertical frame of the main frame so that it cannot move in the horizontal direction. Rotates and can only move up and down. 3. The steel rope tensioning device for tarpaulin trolley according to claim 2, characterized in that: the movable pulley mounting seat is square, and the vertical frame of the main frame encloses to form a central space with a square cross section. 4. The steel rope tensioning device for tarpaulin trolley according to claim 3, characterized in that: the horizontal frame of the main frame is a horizontal steel plate, the vertical frame of the main frame is two double channel steels, and the The two ends of the double-channel steel are respectively welded and connected to the two transverse steel plates. The transverse steel plate on which the screw mandrel is installed is provided with a screw through hole for the screw mandrel to pass through. A steel rope through hole for passing the steel rope is provided. 5. The steel rope tensioning device for tarpaulin trolley according to claim 1, 2, 3 or 4, characterized in that two first ear plates are installed on the movable pulley mounting base, and two of the second A first pin shaft is installed between one ear plate, and the middle part of the movable pulley is provided with a first bearing, and the first bearing is sleeved on the first pin shaft; the fixed pulley mounting seat is two second An ear plate, a second pin shaft is installed between the two second ear plates, a second bearing is provided in the middle of the fixed pulley, and the second bearing is sleeved on the second pin shaft. 6. The steel rope tensioning device for tarpaulin trolley according to claim 5, characterized in that: the diameter of the movable pulley is larger than the diameter of the fixed pulley. 7. The steel rope tensioning device for tarpaulin trolley according to claim 1, 2, 3 or 4, characterized in that: a rotating handle for manually rotating the nut is provided on the outside of the nut. 8. The steel rope tensioning device for tarpaulin trolley according to claim 1, 2, 3 or 4, characterized in that a gasket is provided between the nut and the main frame. 9. The steel rope tensioning device for tarpaulin trolley according to claim 1, 2, 3 or 4, characterized in that: the upper end of the screw rod passes through the horizontal frame of the main frame and is connected to the nut , the lower end of the screw rod is connected to the spring, the spring is a tension spring, and the two fixed pulley mounts are respectively installed on both sides of the lower part of the main frame.