CN102545120A - Hand winch with buffer braking function of tail rope for construction of distribution circuit - Google Patents

Abstract

A hand winch with tail rope buffer braking function for power distribution line construction, including the hand winch installed on the support frame, and the tail rope buffer brake mechanism is also installed on the support frame below the hand winch : The secondary grinding center used for winding the tail rope is fixed on the shaft, and the shaft is rotatably installed on the support frame. A ratchet is integrated on one side of the secondary grinding center, and the ratchet that cooperates with the ratchet is installed on the support frame. superior. The structure of the hand winch mill is as follows: the main grinding center is fixed on the driven shaft, and a set of gear reduction transmission mechanism and a set of gear speed increase transmission mechanism are respectively installed on the driving shaft and the driven shaft. And one side of the main grinding center is integrally provided with a main ratchet, and the main pawl cooperating with the main ratchet is installed on the support frame. The invention has the characteristics of high safety, strong practicability, flexible operation and high line construction efficiency.

Description

Hand winch with tail rope buffer braking function for distribution line construction

technical field

The invention relates to electric power construction equipment, in particular to a shakeable wire tensioner which uses steel wire tail ropes to tighten the cables during the erection and pole construction of large-gear distribution lines.

Background technique

The structure of the existing hand winch has a main grinding center for winding and a set of manual gear transmission mechanism, and the braking mechanism of the main grinding center adopts a hoop structure, which is similar to the braking structure of the existing electric bicycle. . In actual construction, because there is only one main grinding center, the pulling force of the tail rope is large, and the risk factor of the operator of twisting and grinding the tail rope is high, which brings hidden dangers to safe production.

Contents of the invention

The object of the present invention is to provide a hand winch with a tail rope buffering and braking function, which can firmly control the steel wire tail rope and has high safety for power distribution line construction.

The object of the present invention is achieved in the following way: a hand winch with a tail rope buffering and braking function for power distribution line construction, including a hand winch installed on a support frame, a support under the hand winch There is also a tail rope buffer brake mechanism installed on the frame: the secondary grinding center used for winding the tail rope is fixed on the shaft, and the shaft is rotatably installed on the support frame, and a ratchet is integrally arranged on one side of the secondary grinding center, which is integrated with the The ratchet pawl that ratchet cooperates is installed on the support frame.

The structure of the above-mentioned hand winch is as follows: the driving shaft and the driven shaft are rotatably installed on the support frame along the horizontal direction respectively, the left and right sides of the driving shaft are respectively installed with the first manual driving gear and the second manual driving gear, The left and right sides of the driven shaft are respectively equipped with a first driven gear and a second driven gear, the first manual driving gear is meshed with the first driven gear, and the second manual driving Mesh transmission, and the first manual driving gear is the same as the second driven gear, the second manual driving gear is the same as the first driven gear, and the gear ratio between the first manual driving gear and the first driven gear is 3: 1. The main grinding center is installed and fixed on the slave driving shaft, and the main ratchet is integrated on one side of the main grinding center, and the main pawl that cooperates with the main ratchet is installed on the support frame.

The above-mentioned main grinding center and secondary grinding center are cylindrical bodies with concave arc-shaped surfaces.

After the operator winds the steel wire rope through the main grinding center, the steel wire tail rope is pulled to the secondary grinding center of the buffer brake mechanism and wound twice, and the steel wire tail rope is controlled by a special person. Its main function is to prevent the operator who controls the steel wire rope from not being able to control the steel wire tail rope firmly due to various reasons. At this time, the ratchet pawl brake device on the buffer brake mechanism will act as a secondary brake to avoid sudden impact on the work. Injury to persons and equipment.

The present invention disperses the pulling force of the tail rope to make the pulling force of the tail rope smaller, which is easy to operate and control, reduces the safety risk of relevant operators, and effectively improves production efficiency. The secondary grinding center below the main grinding center shares the force borne by the original transmission shaft, thereby reducing the pulling load of the operator.

The beneficial effect of the device is that the device has high safety, and both the main grinding center and the secondary grinding center adopt a ratchet pawl braking mechanism, which has the characteristics of convenient braking operation and quick and effective braking. The cost is low, the practicability is strong, and the operation is flexible (a set of hand-operated gear transmission mechanism is added to the existing hand-operated winch, one set of transmission mechanism is used for wire take-up, and the other set of transmission mechanism is used for wire release) . It saves time and labor, improves the efficiency of line construction, can better overcome the potential risks in the process of using the hand twisted tail rope, and can well meet the construction requirements of transmission and distribution lines. Practical value.

Description of drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a right side view of Fig. 1 .

Fig. 3 is a bottom view of the hand winch part shown in Fig. 1 .

Detailed ways

Figure 1, Figure 2, and Figure 3 show that the hand winch with tail rope buffer braking function used in the construction of this power distribution line includes the hand winch installed on the support frame 101, and the hand winch below the hand winch A tail rope buffer braking mechanism is also installed on the support frame 101: the secondary grinding center 301 used to wind the tail rope is fixed on the shaft, and the shaft is rotatably installed on the support frame 101, and the secondary grinding center side is integrally provided with The ratchet 302 and the ratchet 303 cooperating with the ratchet are installed on the support frame. The structure of the hand winch is as follows: the driving shaft 201 and the driven shaft 203 are respectively rotatably installed on the support frame 101 along the horizontal direction, and the first manual driving gear 202 and the second manual driving gear 202 are respectively installed on the left and right sides of the driving shaft. Driving gear 206, first driven gear 204 and second driven gear 207 are respectively installed on the left and right sides of driven shaft 203, the first manual driving gear 202 is engaged with the first driven gear 204 for transmission, the second hand The driving driving gear 206 is engaged with the second driven gear 207 for transmission, and the first manual driving gear 202 is the same as the second driven gear 207, and the second manual driving gear 206 is the same as the first driven gear 204. The gear ratio of the shaking driving gear 202 to the first driven gear is 3:1; the main grinding center 205 is installed and fixed on the slave driving shaft 203, and the main grinding center side is integrally provided with a main ratchet 208, which is connected with the main ratchet. A cooperating primary pawl 209 is mounted on the support frame 101 . Both the main grinding center 205 and the secondary grinding center 301 are cylindrical bodies with concave arc-shaped surfaces (processed from cylindrical bodies with concave arc-shaped surfaces). Referring to Fig. 1, both ends of the driving shaft are square heads (rectangular or square in cross-section), so that tools such as wrenches can be inserted into them for turning. The buffer brake mechanism is also called buffer brake. Both the driving shaft and the driven shaft can be installed on the support frame through bearings or axle sleeves, specifically between two vertical plates on the support frame. The support frame is made of angle steel or channel steel welded, and the four legs of the support frame are arranged in a square prism.

The construction steps are as follows:

1. The operator installs the hand winch in place.

2. After winding through the main grinding center, the operator winds the steel wire rope on the secondary grinding center of the buffer braking mechanism.

3. The steel wire rope of the main grinding center is wound forward for 4-5 circles.

4. The tail rope of the steel wire rope is pulled down to the secondary grinding center and wound reversely for 2 turns.

5. During the tight rope construction, the tail rope is manually pulled by the operator.

Claims (2)

1. A hand winch with a tail rope buffering and braking function for power distribution line construction, including a hand winch installed on the support frame (101), characterized in that the hand winch below the hand winch Also installed on the support frame (101) is a tail rope buffer braking mechanism: the secondary grinding center (301) used as winding the tail rope is fixed on the shaft, and the shaft is rotatably installed on the support frame (101). A ratchet (302) is integrated on the side, and the ratchet (303) cooperating with the ratchet is installed on the support frame; the structure of the hand winch is: a driving shaft (201) and a driven shaft (203) They are respectively installed rotatably on the support frame (101) along the horizontal direction. The left and right sides of the driving shaft are respectively equipped with the first manual driving gear (202) and the second manual driving gear (206), and the driven shaft (203 ) The first driven gear (204) and the second driven gear (207) are respectively installed on the left and right sides, the first manual driving gear (202) is meshed with the first driven gear (204) The hand-operated driving gear (206) is meshed with the second driven gear (207), and the first hand-operated driving gear (202) is the same as the second driven gear (207), and the second hand-operated driving gear (206) and The first driven gear (204) is the same, the gear ratio of the first hand driven driving gear (202) to the first driven gear is 3:1; the main grinding center (205) is installed and fixed on the slave driving shaft (203), A main ratchet (208) is integrally arranged on one side of the main grinding center, and a main pawl (209) cooperating with the main ratchet is installed on the support frame (101). 2 . The hand winch according to claim 1 , characterized in that, the main grinding center ( 205 ) and the secondary grinding center ( 301 ) are cylindrical bodies with concave arc-shaped surfaces. 3 .

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