CN210926842U - Operating tool for switching handcart - Google Patents

Abstract

The utility model relates to an operating tool of switch handcart. The operating tool comprises an operating part and a connecting part. The operating part includes handheld portion and clamping part, and handheld portion includes relative handheld end and installation end, and the clamping part is installed in the installation end, and has the centre gripping space. The holding portion is formed with a pivot about which the hand-held portion is operable to pivot. The connecting piece includes relative first end and second end, and the first end is rotatably installed in the installation end, and the second end is used for being connected with treating the operating part. The utility model provides a pair of operating means of switch handcart has the installation effectiveness of preferred.

Description

Operating tool for switching handcart

Technical Field

The utility model relates to an electric power tech field especially relates to an operating means of switch handcart.

Background

In switching hand trucks, an extended spring is usually provided for energy storage. If components such as a coil or a point machine in the switch handcart break down or the spring breaks, the spring needs to be replaced. Because the spring generally keeps having certain tensile volume at the in-process of changing, lead to the installation of spring comparatively hard, the installation effectiveness is lower. Even with the aid of a crowbar, a washer or the like, the spring cannot be quickly extended to a length that can be mounted.

SUMMERY OF THE UTILITY MODEL

In view of the above, there is a need to provide an operating tool for a switch handcart, which has better installation efficiency, in order to solve the problem of low installation efficiency of the conventional spring.

An operating tool for switching a hand truck, comprising:

the operating part comprises a handheld part and a clamping part, the handheld part comprises a handheld end and an installation end which are opposite, the clamping part is installed at the installation end and is provided with a clamping space, a rotating fulcrum is formed on the clamping part, and the handheld part can rotate around the rotating fulcrum in an operable mode; and

the connecting piece comprises a first end and a second end which are opposite, the first end is rotatably arranged at the mounting end, and the second end is used for being connected with the operation piece to be operated.

In one embodiment, the clamping portion includes a first plate and a second plate, and the first plate and the second plate are disposed opposite to each other to form a clamping space.

In one embodiment, the first plate and the second plate are both arc-shaped plates, and arc-shaped concave surfaces of the first plate and the second plate are arranged oppositely.

In one embodiment, the clamping portion further includes an elongated main body seat, and the first plate and the second plate are operable to slide along a length direction of the main body seat to adjust a size of the clamping space.

In one embodiment, the portable electronic device further includes two limiting members, the main body base is provided with a plurality of limiting holes along a length direction thereof, the first plate and the second plate are provided with assembling holes, the first plate and the second plate slide to enable the assembling holes of the first plate and the second plate to align with different limiting holes, and the two limiting members are respectively inserted into the assembling holes of the first plate and the second plate and the limiting holes aligned with the assembling holes.

In one embodiment, the fixing device further comprises a rotating shaft, a nut and a mounting piece mounted at the mounting end, a mounting hole is formed in the mounting piece at a position opposite to the first end, the rotating shaft penetrates through the mounting piece and the mounting hole at the first end, and the nut is screwed at two ends of the rotating shaft.

In one embodiment, the mounting piece is a U-shaped elastic piece, and the U-shaped elastic piece is sleeved on the handheld portion and can be operatively clamped with the handheld portion or slide relative to the handheld portion.

In one embodiment, the surface of the U-shaped elastic sheet facing the handheld part is recessed to form a limiting groove which can be matched with the handheld part.

In one embodiment, the second end is provided with a connecting hole which can be matched with the operation piece to be operated.

In one embodiment, the connecting member is a sheet structure, and includes a first connecting piece, a second connecting piece and a transition piece, the first connecting piece and the second connecting piece are parallel and staggered and connected through the transition piece, and the first end and the second end are respectively located at one end of the first connecting piece and the second connecting piece which are far away from each other.

Above-mentioned switch handcart's operating means, when the operating parts are treated in the needs are tensile, the second end of connecting piece with treat the operating parts and be connected, transmission shaft centre gripping on the switch handcart is in the centre gripping space, the operation personnel grip in handheld end, and the handheld portion of operation rotates around the rotation fulcrum of clamping part, under the drive of operating parts, the connecting piece is driven, and the drive treats the operating parts and slides, make treat that the operating parts is tensile to the length that can install, and then will treat that the operating parts is fixed in the mounted position. Because first end rotationally installs in the installation end, the operation personnel grip in handheld end, consequently, under the effect of lever principle, the handheld end of operation drives and treats that the operating parts stretches more laborsavingly, and then can realize quick installation to in order to promote the installation effectiveness of treating the operating parts.

Drawings

Fig. 1 is a schematic structural view illustrating an operation tool of a switch handcart operating to stretch an operation member according to an embodiment of the present invention;

fig. 2 is a schematic overall structure diagram of an operating tool of the switch handcart shown in fig. 1;

fig. 3 is a schematic structural view of a clamping portion in the operating tool of the switch handcart shown in fig. 2.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 and 2, the present invention provides an operating tool 100 for opening and closing a handcart. The operating tool 100 is used to operate the member to be operated 200 to stretch and mount. In particular, the to-be-operated element 200 may be a spring on a switch trolley.

Specifically, the switch handcart is provided with a main shaft and a transmission shaft 300. The main shaft is parallel to the transmission shaft 300 and spaced apart from the transmission shaft. Generally, the switch handcart is installed on a horizontal plane, the main shaft and the transmission shaft 300 extend along the horizontal direction, and the main shaft is located above the transmission shaft 300. Of course, when the installation plane of the switch handcart changes, the installation direction of the main shaft and the transmission shaft 300 also changes correspondingly. For example, when the switch handcart rotates by 90 degrees, the main shaft is positioned at the left side of the transmission shaft 300.

When components such as a coil or a point machine in the switch handcart break down or the spring breaks, the spring needs to be replaced. When the spindle is replaced, one end of the spring is fixed to the spindle, and the other end of the spring needs to be stretched downward and fixed to the transmission shaft 300. The spring has a certain stretching amount in the stretching process and has larger elastic restoring force. Therefore, it takes much effort in the process of extending the other end of the spring to the driving shaft 300. Conventional methods may use crowbars or shims to operate the springs. A crowbar is inserted between two adjacent coils and applies a force in a direction toward the drive shaft 300 to extend the spring to the position of the drive shaft 300. Or a plurality of gaskets can be arranged between a plurality of adjacent spring rings of the spring, and the plurality of gaskets are stacked between the two adjacent spring rings, so that the gap between the spring rings is increased, and the spring can be stretched. No matter which existing mode is used, the installation efficiency of the spring is low.

In the present application, the spring is stretched by operating the operating tool 100, so that the stretching process of the spring is more labor-saving, and the operation is quicker, thereby facilitating the improvement of the installation efficiency.

Specifically, the operating tool 100 includes an operating member 110 and a connecting member 120.

Referring to fig. 3, the operating element 110 may be rod-shaped, cylinder-shaped, or other shapes. Specifically, the operating element 110 includes a hand-held portion 111 and a clamping portion 112 connected to the hand-held portion 111. The hand-held portion 111 is used for the convenience of holding by the operator. The hand-held portion 111 includes opposing hand-held ends 1112 and mounting ends 1113. The mounting end 1113 is used for mounting the clamping portion 112, and the hand-held portion 111 is used for holding by an operator.

Specifically, the handle 111 may be a rod, a cylindrical structure, a block, or other shape. Specifically, in the present embodiment, the handle portion 111 has a cylindrical structure. The surface of the cylindrical structure is smooth, which is convenient for the operator to hold, so as to prevent the operator from being scratched by the rough surface of the holding part 111. Specifically, the cylindrical structure generally has a long length, and the holding end 1112 and the mounting end 1113 are disposed at opposite ends of the cylindrical structure. There is also sufficient space for the worker to engage the gripping portion 112 while holding onto the handle 1112.

The clamping portion 112 is mounted to the mounting end 1113 and has a clamping space 1121. The grip portion 112 has a pivot point formed thereon, and the hand-held portion 111 is operable to be rotatable about the pivot point. In operation, the clamping portion 112 clamps against the drive shaft 300. The contact position of the grip portion 112 with the transmission shaft 300 forms a rotation fulcrum. The operator holds the holding end 1112 and operates the holding portion 111 to rotate around the rotation pivot, so that the clamping portion 112 can also rotate relative to the transmission shaft 300, and the position of the clamping portion 112 relative to the transmission shaft 300 changes.

Specifically, the clamping portion 112 may have a plate-like structure with a rod shape, a cylinder shape, a hook shape, or an arc shape. In the present embodiment, the clamping portion 112 includes a first plate 1122 and a second plate 1123. The first plate 1122 and the second plate 1123 are disposed opposite to each other to form a clamping space 1121.

Specifically, the first plate 1122 and the second plate 1123 may be disposed at an interval to form a clamping space 1121, or the ends of the first plate 1122 and the second plate 1123 opposite to each other may contact each other to form the clamping space 1121. By arranging the first plate 1122 and the second plate 1123, the first plate 1122 and the second plate 1123 can be clamped with the transmission shaft 300 at least from two opposite sides of the transmission shaft 300, so that the clamping portion 112 and the transmission shaft 300 can be firmly installed.

Specifically, the first plate 1122 and the second plate 1123 may be flat-plate-shaped or arc-shaped plate-shaped structures, in this embodiment, the first plate 1122 and the second plate 1123 are both arc-shaped plates, and the arc-shaped concave surfaces of the first plate 1122 and the second plate 1123 are disposed opposite to each other. The rotation fulcrums are formed on the arc-shaped concave surfaces of the first and second plates 1122 and 1123.

Specifically, the arc of the concave arc of the first and second plates 1122 and 1123 matches the arc of the drive shaft 300. Therefore, when the first plate 1122 and the second plate 1123 are clamped with the transmission shaft 300, the concave surfaces of the first plate 1122 and the second plate 1123 can better fit the surface of the transmission shaft 300, so that the contact area between the clamping portion 112 and the transmission shaft 300 can be effectively increased, and the clamping portion 112 and the transmission shaft 300 can be prevented from being separated to cause the failure of the fit between the clamping portion 112 and the transmission shaft 300.

At this time, when the operation handle 111 rotates about the rotation fulcrum, the arc concave surface also rotates relative to the transmission shaft 300, but is always in contact with and abuts against the surface of the transmission shaft 300. In this process, the position of the pivot point can be changed.

Specifically, in the present embodiment, the arc length of the first plate 1122 and the second plate 1123 is preferably one-half of the circumference of the transmission shaft 300. Therefore, when the first plate 1122 and the second plate 1123 surround to form the clamping space 1121, the first plate 1122 and the second plate 1123 can completely cover the surface of the transmission shaft 300, so that the clamping portion 112 and the transmission shaft 300 are more stably matched.

Further, the clamping portion 112 further includes an elongated body seat 1124. The first and second plates 1122, 1123 are operable to slide along the length of the body seat 1124 to adjust the size of the clamping space 1121.

The main body seat 1124 is configured to support the first plate 1122 and the second plate 1123. The first and second plates 1122, 1123 are slidably movable along the length of the body seat 1124 such that the first and second plates 1122, 1123 can be moved toward each other or moved away from each other. When the first plate 1122 and the second plate 1123 are closed, the volume of the clamping space 1121 is increased. When the first and second plates 1122 and 1123 are opened, the volume of the clamping space 1121 is reduced. By adjusting the volume of the clamping space 1121, the clamping space 1121 can be engaged with transmission shafts 300 with different diameters, so as to improve the applicability of the operating tool.

In addition, if the first plate 1122 and the second plate 1123 slide in the same direction at the same sliding speed, the positions of the first plate 1122 and the second plate 1123 relative to the transmission shaft 300 can be adjusted, so that the clamping portion 112 can be conveniently located at a position where the operator can operate the handheld portion 111 with less effort. Specifically, when the grip portion 112 is located on the axis of the hand-held portion 111, it is most labor-saving to operate the hand-held portion 111 to rotate.

Further, in the present embodiment, the operation tool 100 for switching the handcart further includes two limiting members 140. The main body seat 1124 has a plurality of stopper holes 11131 formed along the length direction thereof. The first and second plates 1122 and 1123 have mounting holes 11231 formed therein. The first plate 1122 and the second plate 1123 slide, so that the assembling holes 11231 of the first plate 1122 and the second plate 1123 can be aligned with different limiting holes 11131. The two position-limiting members 140 are respectively inserted into the mounting holes 11231 of the first plate 1122 and the second plate 1123 and the position-limiting holes 11131 aligned with the mounting holes 11231.

Specifically, the plurality of limiting holes 11131 may be disposed at intervals along the length direction of the main body seat 1124, or may be disposed closely to the main body seat 1124. If the first plate 1122 and the second plate 1123 are operated to slide, the volume of the clamping space 1121 can be adjusted. After the adjustment of the volume of the clamping space 1121 is completed, one of the position-limiting members 140 is inserted into the assembly hole 11231 of the first plate 1122 and one position-limiting hole 11131 aligned with the assembly hole 11231, and the other position-limiting member 140 is inserted into the assembly hole 11231 of the second plate 1123 and the other position-limiting hole 11131 aligned with the assembly hole 11231. Therefore, the positions of the first plate 1122 and the second plate 1123 can be determined, so that the first plate 1122 and the second plate 1123 can be prevented from further sliding, and the clamping space 1121 is not matched with the transmission shaft 300, so that the transmission shaft 300 cannot be clamped on the clamping portion 112 or clamped too tightly, and further the handheld portion 112 and the clamping portion 112 cannot rotate relative to the transmission shaft 300, so that the operation tool 100 fails to function.

Moreover, the plurality of limiting holes 11131 are disposed such that the first plate 1122 and the second plate 1123 can be fixed at a plurality of positions, so as to form a plurality of clamping spaces 1121 with different volume sizes between the first plate 1122 and the second plate 1123, thereby meeting the requirements of the transmission shafts 300 with different diameter sizes.

The connecting member 120 includes a first end 121 and a second end 122 opposite to each other. The first end 121 is rotatably mounted to the mounting end 1113. The second end 122 is adapted to be connected to the member 200 to be operated. Specifically, the second end 122 may be a clip, a strong attracting magnet, or other structure. In the embodiment, the second end 122 is formed with a connection hole 1221 capable of being engaged with the operation member 200.

Typically, the lower end of the spring is provided with a latch 210 that is fixedly connected to the spring. The latch 210 is disposed perpendicular to the axial direction of the spring and has opposite ends extending beyond the spring. The transmission shaft 300 is provided with a mounting seat 310, and the mounting seat 310 is provided with a bolt hole 312 which can be matched with the bolt 210. When the spring is slid down until the latch 210 is aligned with the latch hole 312, the operating latch 210 extends into the latch hole 312 and engages the latch hole 312 to secure the spring between the drive shaft 300 and the spindle.

The connection hole 1221 is formed in the second end 122, the connecting member 120 is rotated, so that the second end 122 is close to the spring, and the end of the plug 210 far away from the mounting seat 310 is inserted into the connection hole 1221, so that the connection between the spring and the operating tool 100 can be realized. The spring is then stretched using the operating tool 100 such that the spring is stretched to a point where the latch 210 can be positionally aligned with the latch hole 312. And then the end of the bolt 210 close to the bolt hole 312 is inserted into the bolt hole 312 to fix the spring and the transmission shaft 300. After the spring is fixed, the latch 210 is pushed out of the connection hole 1221. Therefore, by providing the connection hole 1221, the attachment and detachment of the spring to and from the operation tool 100 are simple and easy, and the work efficiency is improved.

Specifically, the connecting member 120 is used to connect the operating member 110 and the end of the spring away from the main shaft. The spring extends generally in a vertical direction when mounted on the switch trolley. The first end 121 is rotatably mounted on the mounting end 1113, and the included angle between the connecting member 120 and the operating member 110 can be adjusted by rotating the first end 121. In the range of 0 to 90, the greater the angle between connecting member 120 and operating member 110, the greater the distance of second end 122 from operating member 110. Since the spring is located above the driving shaft 300, the spring is downwardly stretched when the spring is mounted on the driving shaft 300. Therefore, the greater the distance of the second end 122 from the operating member 110, the smaller the distance of the second end 122 from the lower end of the spring. Therefore, by rotating the first end 121, the distance between the second end 122 and the spring can be adjusted, so that the second end 122 can contact and be connected and fixed with the spring. Furthermore, the clamping portion 112 is clamped on the transmission shaft 300, the operator holds the holding end 1112, and operates the holding portion 111 to rotate around the rotation fulcrum, and the connecting member 120 can be driven by the operating member 110 to move in a direction towards the transmission shaft 300 and rotate along the surface of the transmission shaft 300 along with the operating member 110. Further, the spring is driven by the connecting member 120 to be stretched in a direction toward the driving shaft 300 until the lower end of the spring is brought into contact with the driving shaft 300 and mounted.

During the rotation of the operation handle 111, the first end 121 is rotatably mounted to the mounting end 1113, and the rotation fulcrum is located at the clamping portion 112 and is closer to the mounting end 1113. According to the lever principle, a power x power arm is a resistance x resistance arm. The force of the operator is the power, the first end 121 receives the resistance of the spring, and the first end 121 is mounted on the mounting end 1113, which means that the resistance of the first end 121 is closer to the pivot point, i.e. the resistance arm is shorter. The operator holding the hand-held end 1112 indicates that the distance from the power to the pivot is large, i.e. the length of the power arm is greater than the length of the resistance arm. From the above equation, the power must be less than the drag. Therefore, in the process of using the operating tool 100 to operate the spring stretching, compared with the transmission process of directly pulling the spring stretching or plugging the gasket between the springs, the force used by the operator is more labor-saving and simpler to operate, and the quick installation of the spring is convenient to realize. Therefore, the operation tool 100 is provided, so that the installation of the operation member 200 has better installation efficiency.

It should be noted that during the rotation of the handle end 1112 relative to the rotation fulcrum, the position of the first end 121 gradually moves downward and rotates as the first end 121 follows the mounting end 1113 to rotate around the rotation fulcrum. The spring slides downwards and a small amplitude of oscillation occurs. Moreover, during the downward sliding of the spring, the connecting member 120 rotates relative to the operating member 110, and the included angle between the connecting member 120 and the operating member 110 becomes smaller and smaller. Further, the position of the pivot point on the drive shaft 300 will also move on the drive shaft 300 as the clamp 112 rotates along the surface of the drive shaft 300.

Specifically, the first end 121 and the mounting end 1113 may be connected in a universal rotation manner, a damped rotation manner, or other connection manners. In this embodiment, the first end 121 is rotationally coupled to the mounting end 1113.

Therefore, there is also a certain friction between the first end 121 and the mounting end 1113. When the connection hole 1221 of the link 120 is engaged with the latch 210 of the spring, the link 120 is easily rotated and shaken with respect to the operating member 110 in the presence of the acting force of the spring and the operating member 110, so that the spring is shaken violently during the stretching process, and the latch 210 of the spring is difficult to align with the latch hole 312. And through setting up to be the damping rotation between first end 121 and the installation end 1113 and be connected, the existence of frictional force between first end 121 and the installation end 1113 can offset some spring and operating parts 110's effort for the rotatory degree of difficulty of connecting piece 120 increases, and then makes the range of rocking of connecting piece 120 and spring also less, and bolt 210 on the spring can be better aligns with bolt hole 312.

Specifically, the connecting member 120 is rotatably mounted to the mounting end 1113 and can be rotatably connected via a hinge, a spherical pair, a rotating shaft, etc. In this embodiment, the operation tool 100 for opening and closing the handcart further includes a rotating shaft 131, a nut 132 and a mounting piece 133 mounted on the mounting end 1113. The mounting piece 133 is provided with a mounting hole at a position opposite to the first end 121, the rotating shaft 131 penetrates through the mounting piece 133 and the mounting hole of the first end 121, and the nut 132 is screwed at two ends of the rotating shaft 131.

Specifically, two nuts 132 are provided at opposite ends of the rotating shaft 131 to prevent the rotating shaft 131 from being withdrawn from the mounting holes of the mounting piece 133 and the first end 121. The rotation connection between the connecting member 120 and the first end 121 is simple by providing the rotating shaft 131, the mounting piece 133 and the nut 132.

In this embodiment, the first end 121 is connected to the rotating shaft 131 in a rotation damping manner.

Further, in the present embodiment, the mounting piece 133 is a U-shaped elastic piece. The U-shaped elastic sheet is sleeved on the handheld portion 111 and can be operatively clamped with the handheld portion 111 or slide relative to the handheld portion 111.

Specifically, the U-shaped elastic piece has a notch 1331, and the holding portion 111 is inserted into the notch 1331. One end of the connector 120 is inserted into the notch 1331, and the other end extends out of the notch 1331. The U-shaped elastic sheet comprises two supporting sheets which are relatively parallel and arranged at intervals and a fixing sheet which is connected with the two supporting sheets. The shaft 131 sequentially penetrates the supporting piece at one side of the U-shaped spring, the first end 121 of the connecting member 120 and the supporting piece at the other side of the U-shaped spring. Two nuts 132 are located on two opposite sides of the U-shaped spring and are screwed with the rotating shaft 131. By adjusting the tightness of the nut 132, the size of the gap 1331 can be adjusted. Specifically, upon tightening of the nut 132, the gap 1331 decreases in size such that the U-shaped spring can be snapped into the hand piece 111. The nut 132 is unscrewed, the size of the notch 1331 is increased, and the U-shaped elastic sheet is slidable relative to the handheld part 111 along the axial direction of the handheld part 111, so that on one hand, the distance between the connecting piece 120 and the rotation fulcrum can be adjusted to adjust the length of the resistance arm. Under the condition of constant resistance, the product of the resistance and the resistance arm changes. Further, the product of the power and the power arm will also change. And under the condition that the length of the power arm is inconvenient, the power can be changed along with the power arm. Therefore, an operator can slide through the operation of the U-shaped elastic sheet according to the requirement of labor saving degree, and the position of the U-shaped elastic sheet is adjusted. On the other hand, the U-shaped elastic piece can drive the connecting piece 120 to slide relative to the handheld portion 111, and the distance between the connecting piece 120 and the spring can be further adjusted, so that the connecting piece 120 can be close to and connected with the spring as required, or be separated from the spring and be far away from the spring.

In addition, if the nut 132 is loosened, the size of the gap 1331 is increased, and the U-shaped spring is further operated to rotate around the handle 111, so that the connection hole 1221 of the connecting member 120 can be further aligned and connected with the latch 210.

The U-shaped elastic piece is sleeved on the handheld portion 111 and clamped with the handheld portion 111, so that the U-shaped elastic piece, the connecting member 120 and the operating member 110 are mounted in a simple manner and are convenient to operate.

It should be noted that the U-shaped elastic piece also has a certain elasticity. When the U-shaped elastic piece is operated to slide, the notch 1331 is smaller in size, and the branches at the two sides of the U-shaped elastic piece can be appropriately broken, so that the notch 1331 can be larger in size, and the U-shaped elastic piece can be conveniently operated to slide along the axial direction of the handheld portion 111.

Further, in an embodiment, the surface of the U-shaped elastic piece facing the handle portion 111 is recessed to form a limiting groove 1332 that can cooperate with the handle portion 111.

Specifically, the surfaces of the two supporting pieces and the fixing piece facing the handheld portion 111 are recessed to form a limiting groove 1332, and when the U-shaped elastic piece is clamped with the handheld portion 111, the surface of the handheld portion 111 is attached to the groove walls of the limiting grooves 1332 of the two supporting pieces and the fixing piece, so that the U-shaped elastic piece and the handheld portion 111 are fixed more firmly. Therefore, the connecting piece 120 can be prevented from being violently swung due to the fact that the connecting piece 120 slides along the axial direction of the handheld part 111 because the fixing of the U-shaped elastic piece and the handheld part 111 fails in the process that the connecting piece 120 pulls the spring to move downwards.

Specifically, in the embodiment, the handheld portion 111 has a cylindrical structure, so the limiting groove 1332 is also an arc-shaped groove, and the groove wall of the limiting groove 1332 is an arc-shaped concave surface capable of fitting with the surface of the cylindrical structure.

In particular, the connection may be in the form of a sheet, rod, block or other shape. In the present embodiment, the connecting member 120 is a plate-shaped structure. The connecting member 120 includes a first connecting piece 123, a second connecting piece 124 and a transition piece 125. The first connecting piece 123 and the second connecting piece 124 are disposed in parallel and offset, and are connected by a transition piece 125. The first end 121 and the second end 122 are respectively located at the ends of the first connecting piece 123 and the second connecting piece 124, which are far away from each other. Specifically, the second connecting piece 124 is provided with a connecting hole 1221.

Specifically, the first end 121 is disposed at an end of the first connecting piece 123 away from the second connecting piece 124, and the second end 122 is disposed at an end of the second connecting piece 124 away from the first connecting piece 123. The first end 121 is mounted to the mounting end 1113 of the handle 111 and the second end 122 is connected to the lower end of the spring. Therefore, the connecting member 120 has a longer length, and the distance between the second end 122 of the connecting member 120 and the handle 111 can be adjusted in a wider range when the connecting member 120 is rotated, so that the connecting member 120 can contact with the lower end of the spring.

Specifically, a partition space is further arranged on the switch handcart, and the spring is located in the partition space. In order to reduce the size of the switch handcart, the partition space is generally smaller. While the spring has a larger diameter. When the spring is arranged in the partition space, the distance between the two side walls of the spring opposite to the partition space is smaller. The transmission shaft 300 is clamped between the two opposite side walls of the partition, so that the length of the transmission shaft 300 is also smaller.

The spring is extended in the vertical direction, the driving shaft 300 is extended in the left and right direction, and the latch 210 is extended in the left and right direction. The latch 210, when positioned, is generally parallel to the drive shaft 300. Typically, the mounting seat 310 is disposed at the right end of the transmission shaft 300 and is engaged with the right end of the plug 210. The connector 120 of the operating tool 100 is connected to the left end of the plug 210. In operation, the first connecting piece 123 and the second connecting piece 124 are disposed in a staggered manner and connected by the transition piece 125. Generally, the left end of the latch 210 is spaced apart from the left sidewall of the blocked space by a small distance due to the blocked space. In operation, the clamping portion 112 abuts against the transmission column, and under the arrangement of the offset arrangement and the transition piece 125, the second connecting piece 124 protrudes to the left of the first connecting piece 123 relative to the first connecting piece 123. Therefore, the second coupling piece 124 is spaced farther from the left end of the plug 210 than the first coupling piece 123, so that the second coupling piece 124 has enough space to be movably disposed, and the coupling hole 1221 of the second coupling piece 124 is coupled to the left end of the plug 210.

Further, opposite ends of the transition piece 125 are respectively connected to the ends of the first connecting piece 123 and the second connecting piece 124 close to each other.

Therefore, the projection of the transition piece 125 on the first connecting piece 123 and the second connecting piece 124 has the least overlapping area with the first connecting piece 123 and the second connecting piece 124, and the connecting piece 120 formed by the first connecting piece 123, the second connecting piece 124 and the transition piece 125 has the largest length. The greater the length of the connecting member 120, the greater the range of distance between the second end 122 of the connecting member 120 and the operating member 110 as the connecting member 120 rotates relative to the operating member 110. Therefore, even if the spring is located at a distant position from the driving shaft 300, the operation connector 120 is connected to the spring, so that the operation tool 100 can be used in a wider range.

Moreover, the two opposite ends of the transition piece 125 are respectively connected to the ends of the first connection piece 123 and the second connection piece 124 close to each other, so that the surface of the connection piece 120 is relatively flat and regular, which is convenient for improving the aesthetic property of the operation tool 100.

Above-mentioned operating tool 100 of switch handcart, when the operating part 200 is waited to stretch as required, the second end 122 of connecting piece 120 with wait that the operating part 200 is connected, the last transmission shaft 300 centre gripping of switch handcart is in clamping part 112, the operating personnel holds in handheld end 1112, and operation handheld portion 111 rotates around the rotation fulcrum of clamping part 112, under the drive of operating part 110, connecting piece 120 is driven, and the drive waits that operating part 200 slides, make and wait that operating part 200 stretches to the length that can install, and then will wait that operating part 200 is fixed in the mounted position. Because the first end 121 is rotatably installed at the installation end 1113, and the operator holds the handheld end 1112, under the action of the lever principle, the operation of the handheld end 1112 to drive the to-be-operated device 200 to be stretched is more labor-saving, and thus quick installation can be realized, so as to improve the installation efficiency of the to-be-operated device 200.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. An operating tool for switching a hand truck, comprising:

the operating part comprises a handheld part and a clamping part, the handheld part comprises a handheld end and an installation end which are opposite, the clamping part is installed at the installation end and is provided with a clamping space, a rotating fulcrum is formed on the clamping part, and the handheld part can rotate around the rotating fulcrum in an operable mode; and

the connecting piece comprises a first end and a second end which are opposite, the first end is rotatably arranged at the mounting end, and the second end is used for being connected with the operation piece to be operated.

2. The operating tool for switching the handcart according to claim 1, wherein the clamping part comprises a first plate and a second plate, and the first plate and the second plate are arranged oppositely to form a clamping space in an enclosing manner.

3. The operating tool for switching the handcart according to claim 2, wherein the first plate and the second plate are arc-shaped plates, and arc-shaped concave surfaces of the first plate and the second plate are oppositely arranged.

4. The operating tool for switching a handcart of claim 2, wherein the clamping part further comprises an elongated main body seat, and the first plate and the second plate are operable to slide along the length direction of the main body seat so as to adjust the size of the clamping space.

5. The operating tool of the switch handcart of claim 4, further comprising two limiting members, wherein the main body seat is provided with a plurality of limiting holes arranged along the length direction of the main body seat, the first plate and the second plate are provided with assembling holes, the first plate and the second plate slide to enable the assembling holes on the first plate and the second plate to align with different limiting holes, and the two limiting members are respectively arranged on the assembling holes of the first plate and the second plate and the limiting holes aligned with the assembling holes in a penetrating manner.

6. The operating tool for the switch handcart according to claim 1, further comprising a rotating shaft, a nut and a mounting piece mounted at the mounting end, wherein a mounting hole is formed in a position of the mounting piece opposite to the first end, the rotating shaft penetrates through the mounting piece and the mounting hole at the first end, and the nut is screwed at two ends of the rotating shaft.

7. The operating tool for switching the handcart according to claim 6, wherein the mounting piece is a U-shaped elastic piece, and the U-shaped elastic piece is sleeved on the handheld part and can be operatively clamped with the handheld part or slide relative to the handheld part.

8. The operating tool for switching the handcart according to claim 7, wherein the U-shaped spring plate is recessed towards the surface of the hand-held part to form a limiting groove matched with the hand-held part.

9. The operating tool for switching the handcart according to claim 1, wherein the second end is provided with a connecting hole which can be matched with the operation piece.

10. The operating tool of the switch handcart of claim 1, wherein the connecting piece is a sheet structure and comprises a first connecting piece, a second connecting piece and a transition piece, the first connecting piece and the second connecting piece are arranged in parallel and in a staggered mode and are connected through the transition piece, and the first end and the second end are respectively located at one ends, far away from each other, of the first connecting piece and the second connecting piece.

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