CN213731517U - Labor-saving threading and stripping structure for pull rod connecting pin shaft - Google Patents

Abstract

The utility model discloses a labor-saving wearing and releasing structure for a pull rod connecting pin shaft, which belongs to the field of hydroelectric engineering and provides a more labor-saving wearing and releasing structure for the pull rod connecting pin shaft, comprising a pull rod, a connecting pin shaft for connecting the pull rod and a shaft moving device, wherein the shaft moving device comprises a fixed frame, a hand wheel and a screw rod; the hand wheel driving device is characterized by further comprising a driving gear shaft and a driven gear, wherein a driving gear is arranged on the driving gear shaft, the driving gear shaft is coaxial with and fixedly connected with the hand wheel, the driven gear is coaxial with and fixedly connected with the screw rod, the driving gear is in meshing transmission with the driven gear, and the tooth number of the driving gear is smaller than that of the driven gear; the screw rod can be driven to rotate by rotating the hand wheel. The utility model discloses a set up the gear drive substructure that drive gear axle and driven gear constitute, realized laborsaving purpose through utilizing gear drive.

Description

Labor-saving threading and stripping structure for pull rod connecting pin shaft

Technical Field

The utility model relates to a water and electricity engineering technical field especially relates to a laborsaving structure of wearing to take off for pull rod connecting pin axle.

Background

The pull rod is one of important component parts for connecting the hoist and the gate.

The gate, one of the important components of the hydraulic structure, is used for closing the orifices of the hydraulic structure and can fully or partially open the orifices as required to adjust the upstream and downstream water levels and the discharge flow. The types of gates are many, and can be generally classified according to the working properties of the gates: a working gate, an accident gate and an overhaul gate; the method can be divided into the following parts according to the setting parts: open top type gate, down-the-hole gate; according to the structural formula, the method can be divided into: planar gates, radial gates, arched gates, and the like.

The hoist, generally mainly driven by electricity, is used for opening and closing gates, trash racks and the like, and is generally divided into a fixed hoist and a movable hoist. The fixed hoist comprises a winch hoist, a screw hoist, a hydraulic hoist and a chain hoist; the movable hoist comprises a portal hoist, a trolley hoist, a bridge hoist and the like.

In the prior hydroelectric engineering, the connection between a pull rod and a pull rod, the connection between the pull rod and a hoist lifting head, the connection between the pull rod and a gate lifting lug and the like are generally directly connected by a light pin shaft in a dismounting way; however, with the appearance of a batch of large and huge hydroelectric equipment in recent years, the hoisting load carried by a single pull rod is increased, such as about 7000kN, and even larger; at the moment, the diameter requirement on the pin shaft is larger, so that the self weight of the pin shaft is increased, and the weight of one pin shaft reaches 500kg and above; due to the fact that the weight of the pin shaft is too large, great difficulty and trouble are brought to daily overhauling and maintenance of the pull rod, such as installation and disassembly.

A "pull-in and pull-out structure of a connecting pin for a tie rod" is disclosed in patent publication No. CN204225046U, hereinafter referred to as document 1; the corresponding position of the connecting pin shaft is provided with a shaft moving device for disassembling the connecting pin shaft; therefore, when the connecting pin shaft needs to be disassembled, the disassembly and the assembly of the connecting pin shaft become very convenient only by rotating the hand wheel on the shaft moving device, and the working efficiency can be improved. However, in the above-mentioned threading and unthreading structure, the operator operates to directly rotate the screw rod through the hand wheel, so the operating force required in the actual operation process is often great, and the operator is relatively hard to actually operate.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem provide a laborsaving structure of wearing to take off that is used for pull rod connecting pin axle more laborsaving.

The utility model provides a technical scheme that its technical problem adopted is: the labor-saving penetrating and releasing structure for the pull rod connecting pin shaft comprises a pull rod, a connecting pin shaft for connecting the pull rod and a shaft moving device, wherein the shaft moving device comprises a fixed frame, a hand wheel and a screw rod; the fixed frame is relatively fixed with the pull rod after being installed; the hand wheel is rotatably arranged on the fixing frame; a screw hole is arranged in the axial direction of the connecting pin shaft and is in threaded fit with the screw; the hand wheel driving device is characterized by further comprising a driving gear shaft and a driven gear, wherein a driving gear is arranged on the driving gear shaft, the driving gear shaft is coaxial with and fixedly connected with the hand wheel, the driven gear is coaxial with and fixedly connected with the screw rod, the driving gear is in meshing transmission with the driven gear, and the tooth number of the driving gear is smaller than that of the driven gear; the screw rod can be driven to rotate by rotating the hand wheel.

Further, the method comprises the following steps: the fixed frame is fixedly arranged on the pull rod.

Further, the method comprises the following steps: the length of the screw is not shorter than that of the connecting pin shaft.

Further, the method comprises the following steps: the screw hole comprises a threaded section and a smooth section, and the threaded section is positioned at one side close to the hand wheel; the thread section is in thread fit with the screw; the smooth section is in clearance fit with the screw.

Further, the method comprises the following steps: the thread section is arranged on one mounting block; the smooth section is arranged on the connecting pin shaft; the mounting block is detachably mounted on the connecting pin shaft, and a screw hole is formed after the threaded section is coaxially matched with the smooth section.

The utility model has the advantages that: this patent is based on document 1 and realizes the purpose of saving labor by using gear transmission by adding a gear transmission pair structure composed of a driving gear shaft and a driven gear. Therefore, the operation force required in the actual operation process is more labor-saving than that of the structure in the document 1, so that the actual operation of an operator is more convenient; under the condition of not adopting other tools, one person can freely insert and remove the pin into the pull rod device, thereby reducing the labor intensity and improving the field labor condition.

Drawings

FIG. 1 is a schematic view of the structure of the tie bar when connected;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is an enlarged view of a portion B of FIG. 2;

FIG. 4 is a cross-sectional view of section A-A of FIG. 3;

labeled as: the device comprises a pull rod 1, a connecting pin shaft 2, a shaft moving device 3, a fixing frame 31, a hand wheel 32, a screw 33, a screw hole 4, a threaded section 41, a smooth section 42, a mounting block 5, a driving gear shaft 6, a driving gear 61 and a driven gear 7.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

It should be noted that, if the present invention relates to directional indication terms, such as the terms of direction and orientation, above, below, left, right, front and back, for facilitating the description of the relative position relationship between the components, the absolute position that is not the relative position relationship between the related components and the components is specifically referred to, and is only used for explaining the relative position relationship and the motion condition between the components in a certain specific attitude, and if the specific attitude changes, the directional indication changes accordingly. In the present invention, the terms "a" and "an" refer to a plurality of items, such as "a plurality of items" and "a plurality of items".

As shown in fig. 1 to fig. 4, the labor-saving threading and detaching structure for a pull rod connecting pin shaft of the present invention comprises a pull rod 1, a connecting pin shaft 2 for connecting the pull rod 1, and a shaft moving device 3, wherein the shaft moving device 3 comprises a fixing frame 31, a hand wheel 32, and a screw 33; the fixed frame 31 is fixed relative to the pull rod 1 after being installed; the hand wheel 32 is rotatably arranged on the fixed frame 31; a screw hole 4 is arranged in the axial direction of the connecting pin shaft 2, and the screw hole 4 is in threaded fit with the screw rod 33; the method is characterized in that: the hand wheel driving device is characterized by further comprising a driving gear shaft 6 and a driven gear 7, wherein a driving gear 61 is arranged on the driving gear shaft 6, the driving gear shaft 6 is coaxial and fixedly connected with the hand wheel 32, the driven gear 7 is coaxial and fixedly connected with the screw 33, the driving gear 61 is in meshing transmission with the driven gear 7, and the number of teeth of the driving gear 61 is smaller than that of the driven gear 7; the screw 33 is rotated by turning the hand wheel 32.

The utility model discloses an on literature 1's basis, realize the laborsaving rotation transmission between hand wheel 32 and the screw rod 33 through the gear drive substructure that increases drive gear axle 6 and driven gear 7 and constitute to hand wheel 32 and the driven structure of the direct fixed connection of screw rod 33 in replacing literature 1, and then realized laborsaving purpose through utilizing gear drive. For manual drive hand wheel 32 rotates during operating personnel's actual operation promptly, then directly drive gear shaft 6 synchronous rotation to on will rotating the transmission to screw rod 33 with the help of the meshing of drive gear 61 on the drive gear shaft 6 and driven gear 7, be less than driven gear 7's number of teeth through the number of teeth that sets up drive gear 61 like this, can reach laborsaving driven purpose.

In addition, other combinations in the present invention are substantially the same as those in document 1, and are specifically described below.

More specifically, the fixed frame 31 is fixed relative to the position of the pull rod 1 after being installed; the fixing frame 31 can be generally fixedly arranged on the wall corresponding to the pull rod; of course, it is more preferable to fixedly mount the fixing bracket 31 directly on the drawbar 1.

More specifically, when the connecting pin 2 is usually disassembled, the connecting pin 2 needs to be completely installed in the pin hole of the pull rod 1 or completely removed from the pin hole; it is therefore generally required that the length of the threaded rod 33 is not shorter than the length of the connecting pin 2, so that the connecting pin 2 can be completely removed. Of course, generally, the screw 33 cannot go deep into the pin hole on the pull rod 1; otherwise, not only the dismounting work of the pull rod 1 is more troublesome, but also the dismounting of the connecting pin shaft 2 is inconvenient.

More specifically, the threaded engagement between the threaded hole 4 of the connecting pin 2 and the threaded rod 33 is such that, when the threaded rod 33 is rotated, the connecting pin 2 is expected to move axially relative to the threaded rod 33; therefore, theoretically, only one section of the screw hole 4 needs to be in threaded fit with the screw rod 33, and the screw holes 4 in the other area sections can be in clearance fit with the screw rod 33. If the screw hole 4 is provided with a structure comprising a threaded section 41 and a smooth section 42, and the threaded section 41 is positioned at the side close to the hand wheel 32; and the thread section 41 is in thread fit with the screw 33; while the smooth section 42 is a clearance fit with the screw 33.

Further, it is also contemplated to provide threaded segments 41 on one mounting block 5; the smooth section 42 is arranged on the connecting pin shaft 2; the mounting block 5 is detachably mounted on the connecting pin shaft 2; thus, the thread of the thread section 41 can be replaced conveniently after being damaged. If the mounting block 5 is mounted on the connecting pin shaft 2 by using a screw, once the thread in the thread section 41 is damaged, the whole connecting pin shaft does not need to be replaced, and only the mounting block 5 needs to be replaced; is more convenient.

Claims (5)

1. A labor-saving penetrating and releasing structure for a pull rod connecting pin shaft comprises a pull rod (1), a connecting pin shaft (2) for connecting the pull rod (1) and a shaft moving device (3), wherein the shaft moving device (3) comprises a fixed frame (31), a hand wheel (32) and a screw (33); the fixed frame (31) is relatively fixed with the pull rod (1) after being installed; the hand wheel (32) is rotatably arranged on the fixed frame (31); a screw hole (4) is arranged in the axial direction of the connecting pin shaft (2), and the screw hole (4) is in threaded fit with the screw rod (33); the method is characterized in that: the hand wheel driving mechanism is characterized by further comprising a driving gear shaft (6) and a driven gear (7), wherein a driving gear (61) is arranged on the driving gear shaft (6), the driving gear shaft (6) is coaxial with and fixedly connected with the hand wheel (32), the driven gear (7) is coaxial with and fixedly connected with the screw rod (33), the driving gear (61) is in meshing transmission with the driven gear (7), and the number of teeth of the driving gear (61) is smaller than that of the driven gear (7); the screw rod (33) can be driven to rotate by rotating the hand wheel (32).

2. The labor-saving threading and unthreading structure for a tie rod connecting pin shaft of claim 1, wherein: the fixed frame (31) is fixedly arranged on the pull rod (1).

3. The labor-saving threading and unthreading structure for a tie rod connecting pin shaft of claim 1, wherein: the length of the screw rod (33) is not shorter than that of the connecting pin shaft (2).

4. Labor-saving threading and unthreading structure for a tie rod connecting pin according to any one of claims 1 to 3, characterized in that: the screw hole (4) comprises a threaded section (41) and a smooth section (42), and the threaded section (41) is positioned on one side close to the hand wheel (32); the thread section (41) is in thread fit with the screw (33); the smooth section (42) is in clearance fit with the screw (33).

5. The labor-saving threading and unthreading structure for a tie rod connecting pin shaft of claim 4, wherein: the thread section (41) is arranged on one mounting block (5); the smooth section (42) is arranged on the connecting pin shaft (2); the mounting block (5) is detachably mounted on the connecting pin shaft (2), and a screw hole (4) is formed after the threaded section (41) is coaxially matched with the smooth section (42).

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