WO2020233303A1

WO2020233303A1 - Novel electric telescopic rod

Info

Publication number: WO2020233303A1
Application number: PCT/CN2020/085505
Authority: WO
Inventors: 倪军
Original assignee: Ni Jun
Priority date: 2019-05-20
Filing date: 2020-04-20
Publication date: 2020-11-26
Also published as: CN110054032A

Abstract

An electric telescopic rod, comprising a base part (10), a drive part (20), and a telescopic rod part (30). The drive part (20) comprises a line winding motor (21), a reduction gearbox (22), and a line winding mechanism, the line winding motor (21) being connected to the reduction gearbox (22) and the reduction gearbox (22) being connected to the line winding mechanism. The telescopic rod part (30) comprises a central core rod (31) and a plurality of hollow rod sections (32) having different diameters, the plurality of hollow rod sections (32) being sleeved section by section according to descending diameters, and the central core rod (31) being inserted into cavities of the hollow rod sections (32). The base part (10) is provided with a fixed rod section (11). The fixed rod section (11) is provided with a stationary pulley (111). Either end of the hollow rod section (32) is provided with a first moving pulley (3231) and a second moving pulley (3221) respectively. The line winding mechanism comprises line winding reels (23, 23A, 23B), a pull-up line (24) and a pull-down line (25).

Description

A new type of electric telescopic pole

Technical field

The invention relates to the technical field of telescopic rods, in particular to a new type of electric telescopic rod.

Background technique

In daily production, many industries require high-altitude operations. For example, if farmers need to pick, spray, pruning and other operations on fruit trees; for example, in the field of cleaning services, some glass installed in high places needs to be scrubbed. These all involve high-altitude operations. In the existing production practice, auxiliary operations are carried out by using ladders or using long pole appliances. Setting up a ladder not only requires moving the ladder to various places, but also constantly climbing up and down the ladder, which is troublesome and unsafe. Although the use of long pole appliances is not as troublesome as using ladders, and is relatively safe, long pole appliances are very inconvenient whether to carry or transport; in addition, use long pole appliances for auxiliary operations. If you need to install power tools on the top, you also need to pull wires on the poles, which is very inconvenient. In the current technical field of telescopic poles, some telescopic poles use a telescopic structure similar to the umbrella column of an umbrella. The telescopic length of this structure is fixed, and the telescopic length cannot be adjusted accurately according to specific actual needs; The telescopic rod used in the telescopic rod is a traditional screw-type telescopic structure, which is too complex and heavy, and the user cannot support the telescopic rod of this structure for a long time.

technical problem

The purpose of the present invention is to overcome the shortcomings of the prior art and provide a new type of electric telescopic rod.

Technical solutions

In order to achieve the above objective, the present invention adopts the following technical solutions: a new type of electric telescopic rod, including a base part, a driving part, a telescopic rod part, the telescopic rod part is fixedly installed on the base part, the driving Part of it is arranged in the inner cavity of the base part, the driving part includes a winding motor, a reduction gear box, and a winding mechanism. The winding motor is connected to the reduction gearbox, and the reduction gearbox is connected to the winding The wire mechanism is connected; the telescopic rod part includes a core rod and a number of hollow rod sections with different diameter specifications, and the hollow rod sections are arranged in order from large to small according to the diameter specifications. The core rod is inserted in the cavity of the hollow rod section;

The base part is provided with a fixed rod section, the fixed rod section is provided with a first stop ring, the fixed rod section is provided with a fixed pulley, and both ends of the hollow rod section are respectively provided with a first movable pulley, The second moving pulley,

The winding mechanism includes a reel, a pull-up wire, and a pull-down wire. One end of the pull-up wire is wound around one end of the reel, and the other end of the pull-up wire is connected to the core rod. The upper pull wire sequentially bypasses the fixed pulley, the first movable pulley and the second movable pulley of the hollow link, one end of the pull wire is wound on the other end of the spool, and the pull The other end of the wire is connected with the core rod.

To further elaborate, the pull-down wire passes through the cavity of the hollow rod section, one end of the pull-down wire is wound on the reel, and the other end of the pull-down wire is fixed to the bottom of the core rod Where, a first spring is connected between the pull-down wire and the core rod.

To further elaborate, the pull-up wire passes through the cavity of the hollow rod section, one end of the pull-up wire is wound on the reel, and the other end of the pull-up wire is fixed to the bottom of the core rod Where, a second spring is connected between the upper pull wire and the core rod.

To further elaborate, the outer surface of the hollow rod section is provided with a positive electric conductive sliding bar and a negative electric conductive sliding bar, one end of the positive electric conductive sliding bar is connected with a positive electric carbon brush, and one end of the negative electric conductive sliding bar is connected with A negative electric carbon brush, the positive electric carbon brush conducts a positive current between two adjacent hollow rod sections, and the negative electric carbon brush conducts a negative current between two adjacent hollow rod sections;

The core rod is provided with a positive electric conductive member and a negative electric conductive member, and the positive electric conductive member is in contact with the positive electric carbon brush of the hollow rod section adjacent outside the core rod. The negative electric conductive member is in contact with the negative electric carbon brush of the hollow rod section adjacent outside the core rod, and the positive electric conductive member and the negative electric conductive member are both connected to the rod end of the core rod Connected to the power tool;

A positive electric fixed carbon brush and a negative electric fixed carbon brush are arranged in the fixed rod section, and the positive electric fixed carbon brush is in phase with the positive electric conductive slider of the hollow rod section adjacent to the fixed rod section. Contact, the negatively charged fixed carbon brush is in contact with the negatively charged conductive slider of the adjacent hollow rod section in the fixed rod section, the positively charged fixed carbon brush and the negatively charged fixed carbon brush are both in contact with the The power supply of the electric tool is connected.

To further elaborate, the hollow rod section includes a middle rod section, an upper edge ring mouth, and a lower edge ring mouth. The upper edge ring mouth and the lower edge ring mouth are respectively fixedly mounted on the two rod ends of the middle rod section. , The first movable pulley is fixedly installed at the lower edge ring opening, the second movable pulley is fixedly installed at the upper edge ring opening, and the positive electric carbon brushes and the negative electric carbon brushes are fixedly arranged on the upper Rim ring mouth.

To further elaborate, there is at least one pull-up line, and each pull-up line corresponds to one first movable pulley and one second movable pulley.

To further elaborate, there is at least one pull-down line.

To further elaborate, the winding mechanism includes a winding sliding shaft, the winding sliding shaft is connected with the reduction gear box, the winding drum is sleeved on the winding sliding shaft, and the winding drum can be Sliding along the winding sliding shaft, the winding motor drives the winding sliding shaft to rotate through the reduction gear box, thereby driving the winding drum at the winding sliding shaft to rotate and winding.

Beneficial effect

The beneficial effects of the present invention are:

1. The invention has a novel structure. The winding motor is used to drive the winding drum. The winding drum simultaneously drives the upper and lower wires to take up and pay off. The upper and lower wires drive the electric telescopic rod to expand and contract, which effectively overcomes The traditional screw-type telescopic structure and the deficiencies of the telescopic structure of the umbrella pole, the user can freely control the telescopic length and the speed of the telescopic rod by pressing the control button.

2. The present invention also uses carbon brushes, conductive sliding strips and other conductive structure designs in the telescopic rod part. The electric tool installed at the core rod can directly conduct electricity through the telescopic rod part. In actual use, it is installed at the end of the core rod. The electric tool does not need to be equipped with an additional battery, which effectively reduces the weight of the head of the electric telescopic rod and reduces the burden of operation; at the same time, the electric tool installed at the core rod does not need to draw wires along the electric telescopic rod, which is very convenient to use.

3. The application range of the present invention is very wide. The telescopic length is determined by the number and length of the pipe section. The design is very convenient. It can be made into various related telescopic tools, vehicle telescopic rods, etc., and can be applied to various scenarios. At the same time, the present invention also has the advantage of being convenient to carry. When storing or carrying, the user can control the contraction of the electric telescopic pole to the shortest length through the control button; when the electric telescopic pole needs to be used for work, the user can The automatic control system or manual button is used to control the extension of the electric telescopic rod to the required length and control the related tool head manipulator. The end of the telescopic rod can be connected to electric facilities such as electric tools or manipulators through interfaces.

Description of the drawings

Figure 1 is a schematic diagram of the structure of the present invention.

Fig. 2 is a partial enlarged schematic diagram of A in Fig. 1.

Figure 3 is a cross-sectional view of the present invention.

Fig. 4 is a cross-sectional view taken along D-D in Fig. 1.

Figure 5 is a partial structural diagram of the core rod.

Fig. 6 is a schematic diagram of a partial structure of a hollow rod section.

Figure 7 is a schematic view of the structure of the upper edge ring.

Figure 8 is a schematic diagram of the assembly of the hollow rod section.

Figure 9 is a schematic diagram of the structure of the present invention.

Figure 10 is a schematic diagram of the principle when the electric telescopic rod is retracted. (Note: The upper cable and the lower cable are set on the same reel.)

Figure 11 is a schematic diagram of the principle when the electric telescopic rod is extended. (Note: The upper cable and the lower cable are set on the same reel.)

Figure 12 is a schematic diagram of the principle when the electric telescopic rod is retracted. (Note: The upper cable and the lower cable are set on two different spools.)

Figure 13 is a schematic diagram of the principle when the electric telescopic rod is extended. (Note: The upper cable and the lower cable are set on two different spools.)

Figure 14 is a schematic diagram of the application of the present invention in the first embodiment.

Figure 15 is a schematic diagram of the structure of the first limiting ring.

Attached icon number:

10. Machine base part; 11. Fixed pole section; 111. Fixed pulley; 112. Positive electric fixed carbon brush; 113. Negative electric fixed carbon brush; 114. The first limit ring;

20. Drive part; 21. Reel motor; 22. Gearbox; 23\23A\23B, reel; 24, pull-up line; 25, pull-down line; 26, reel slide shaft; 27, control button;

30. Telescopic rod part; 31, core rod; 311, first spring; 312, second spring; 313, second limit ring; 32, hollow rod section; 321, middle rod section; 3211, positive electric conductive slide Bar; 3212, negative electric conductive slider; 322\322A\322B\322C\322D\322E, upper edge ring mouth; 3221, second movable pulley; 3222, positive carbon brush; 3223, negative carbon brush; 3224, guide wheel; 323\323A\323B\323C\323D\323E, lower edge ring mouth; 3231, the first movable pulley; 324, wiring position;

32A, the first hollow section; 32B, the second hollow section; 32C, the third hollow section; 32D, the fourth hollow section; 32E, the fifth hollow section; 40, the fire truck; 41, the fire water gun.

Embodiments of the invention

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with the accompanying drawings.

With reference to Figures 1 to 3, a new type of electric telescopic rod includes a base part 10, a driving part 20, and a telescopic rod part 30. The telescopic rod part 30 is fixedly installed on the base part 10, and the driving part 20 is provided with In the inner cavity of the base part 10, the driving part 20 includes a winding motor 21, a reduction box 22, and a winding mechanism. The winding motor 21 is connected with the reduction box 22, and the reduction box 22 is connected with the winding mechanism; a telescopic rod part 30 includes a core rod 31 and several sections of hollow rod sections 32 with different diameter specifications. The hollow rod sections 32 are arranged in order from large to small according to the diameter specifications. The core rod 31 is inserted into the hollow rod section. 32 in the cavity;

The base part 10 is provided with a fixed rod section 11, the fixed rod section 11 is provided with a fixed pulley 111, the rod mouth of the fixed rod section 11 is provided with a first limit ring 114, and the fixed pulley 111 is fixedly arranged on the first limit ring 114 The structure of the first limit ring 114 of the fixed link 11 is the same as the structure of the upper edge ring opening 322 of the hollow link 32. The two ends of the hollow link 32 are respectively provided with a first movable pulley 3231 and a second movable pulley 3221, The first movable pulley 3231 is specifically arranged at the lower end of the hollow link 32, and the second movable pulley 3221 is specifically arranged at the upper end of the hollow link 32.

The winding mechanism includes a spool 23, an upper cable 24, and a lower cable 25. One end of the upper cable 24 is wound around one end of the spool 23, the other end of the upper cable 24 is connected to the core rod 31, and the upper cable 24 in turn By bypassing the fixed pulley 111, the first movable pulley 3231 and the second movable pulley 3221 of the hollow rod section 32, one end of the pull-down wire 25 is wound on the other end of the reel 23, and the other end of the pull-down wire 25 is connected to the core rod 31. As shown in FIG. 9, the reel 23 can also be arranged horizontally.

As shown in FIG. 5, the pull-down wire 25 passes through the cavity of the hollow rod section 32, one end of the pull-down wire 25 is wound around the reel 23, and the other end of the pull-down wire 25 is fixed at the bottom of the core rod 31. A first spring 311 is connected between the pull-down wire 25 and the core rod 31. The rope end of the pull-down wire 25 passes through the bottom of the core rod 31, the pull-down wire 25 passes through the first spring 311, one end of the first spring 311 bears the rope end of the pull-down wire 25, and the other end of the first spring 311 abuts In the core rod 31, when the spool 23 rewinds the pull-down wire 25, the first spring 311 can collapse the pull-up and pull-down wires, so as to prevent the pull-wire from loosening and slipping out of the pulley or winding.

As shown in FIG. 5, the upper cable 24 passes through the cavity of the hollow rod section 32, one end of the upper cable 24 is wound around the reel 23, and the other end of the upper cable 24 is fixed at the bottom of the core rod 31. A second spring 312 is connected between the upper cable 24 and the core rod 31. The rope end of the upper pull cord 24 passes through the bottom of the core rod 31, the upper pull cord 24 passes through the second spring 312, one end of the second spring 312 bears the rope end of the upper pull cord 24, and the other end of the second spring 312 abuts In the core rod 31, when the reel 23 is rewinding the upper wire 24, the second spring 312 can collapse the upper and lower wires so as to prevent the wires from loosening and falling out of the pulley or winding.

As shown in FIG. 1 to FIG. 4, the outer surface of the hollow rod section 32 is provided with a positive electric conductive slider 3211, a negative electric conductive slider 3212, and one end of the positive electric conductive slider 3211 is connected to the positive carbon brush 3222 through a wire , One end of the negative conductive slider 3212 is connected to the negative carbon brush 3223 through a wire. The positive carbon brush 3222 and the negative carbon brush 3223 are both provided with a carbon brush spring, and the positive carbon brush 3222 conducts two adjacent hollow rod sections 32. The positive current between the two, the negative carbon brush 3223 conducts the negative current between the two adjacent hollow rod sections 32;

The hollow rod section 32 is composed of hollow sections. The inner and outer walls of the hollow rod section 32 are provided with wire grooves. The wire grooves between the adjacent hollow rod sections 32 are the routing channels for the upper pull wires 24, and the pull wires 25 Passing through the middle hollow position of each hollow rod section 32, each hollow rod section 32 is provided with a position for pasting a positive electric conductive sliding strip 3211 and a negative electric conductive sliding strip 3212;

The core rod 31 is provided with a positive electric conductive member and a negative electric conductive member. The positive electric conductive member is in contact with the positive carbon brush 3222 of the hollow rod section 32 adjacent outside the core rod 31. The negative electric conductive member is in contact with the core rod 31. The negative carbon brushes 3223 of the adjacent hollow rod sections 32 are in contact with each other, and the positive and negative conductive parts are both connected with the electric tool at the rod end of the core rod 31; the positive conductive part at the core rod 31 The specific structure of is exactly the same as the specific structure of the positive conductive slider 3211 at the hollow rod section 32, and the specific structure of the negative conductive member at the core rod 31 is completely the same as that of the negative conductive slider 3212 at the hollow rod section 32. the same;

The fixed rod section 11 is provided with a positively charged fixed carbon brush 112 and a negatively charged fixed carbon brush 113. As shown in FIG. 15, the positively charged fixed carbon brush 112 and the negatively charged fixed carbon brush 113 are specifically arranged on the first of the fixed rod section 11. At the limit ring 114, the positively charged fixed carbon brush 112 is in contact with the positively conductive slide 3211 of the adjacent hollow rod section 32 in the fixed rod section 11, and the negatively charged fixed carbon brush 113 is in contact with the adjacent hollow inside the fixed rod section 11. The negative electric conductive sliding strip 3212 of the rod section 32 is in contact with each other, and the positive electric fixed carbon brush 112 and the negative electric fixed carbon brush 113 are both connected to the power source of the electric tool. The positively charged fixed carbon brush 112 and the negatively charged fixed carbon brush 113 are symmetrically arranged in the fixed rod section 11. The positive electric carbon brush 3222 and the positive electric conductive slider 3211 are specifically connected by wires, and the negative electric carbon brush 3223 and the negative electric conductive slider 3212 are specifically connected by wires. The electric tool can be determined according to the actual situation. The electric tool can be a manipulator, an electric picker, an electric cutting machine, a pesticide sprayer and other electrical appliances. In addition, the electric tool is not limited to agricultural appliances, and the electric tool can be an electric appliance with other practical uses. The electric tool at the rod end of the core rod 31 can be energized with a power source placed in another position without having to re-pull the wire during use.

As shown in FIGS. 6 to 7, the hollow rod section 32 includes a middle rod section 321, an upper edge ring opening 322, and a lower edge ring opening 323. The upper edge ring opening 322 and the lower edge ring opening 323 are respectively fixedly installed in the middle. At the two rod ends of the rod section 321, the first movable pulley 3231 is fixedly installed at the lower edge ring opening 323, the second movable pulley 3221 is fixedly installed at the upper edge ring opening 322, the positive electric carbon brushes 3222 and the negative electric carbon brush 3223 are all fixedly arranged on the upper edge环口322. The positive carbon brush 3222 and the negative carbon brush 3223 are symmetrically arranged at the upper edge ring opening 322. A guide wheel 3224 is also provided at the upper edge ring opening 322. Due to the structural restriction of the hollow link 32, the second movable pulley 3221 forms an angle with the central axis of the hollow link 32, and the guide wheel 3224 guides the upper cable 24. The role of the upper pull wire 24 is guided to the second movable pulley 3221. The outer surface of the middle pole section 321 is provided with a wiring position 324, and the upper pull wire 24 and the pull-down wire 25 are all routed along the wiring position 324.

As shown in FIG. 2, there is at least one upper pull wire 24, and each upper pull wire 24 corresponds to a first movable pulley 3231 and a second movable pulley 3221. In actual use, an electric tool is installed at the rod end of the core rod 31 of the telescopic rod part 30, and the telescopic rod part 30 extends upward, thereby transporting the electric tool upward. When the power tool or other appliance installed at the rod end of the core rod 31 is heavy, three, four or more pull-up wires 24 can be used, and a corresponding number of first movable pulleys 3231 and second movable pulleys 3221 are also required.

As shown in FIG. 2, there is at least one pull-down line 25. In actual use, the rod end of the core rod 31 of the telescopic rod part 30 is equipped with an electric tool. When the telescopic rod part 30 is contracted downwards, since the hollow rod section 32 and the electric tool itself have downward gravity, the pull-down wire 25 does not need Excessive pulling force can cause the telescopic rod part 30 to shrink downward, so in specific use, the number of pull-down wires 25 can be one.

As shown in FIG. 10 and FIG. 11, the winding mechanism includes a winding sliding shaft 26. The winding sliding shaft 26 is connected with the reduction gear box 22. The winding drum 23 is sleeved on the winding sliding shaft 26. The winding drum 23 can slide along the winding sliding shaft 26, and the winding motor 21 drives the winding sliding shaft 26 to rotate through the reduction box 22, thereby driving the winding drum 23 at the winding sliding shaft 26 to rotate and winding. Since both ends of the spool 23 are respectively wound with the upper wire 24 and the lower wire 25, and the winding directions of the upper wire 24 and the lower wire 25 at the spool 23 are completely opposite, the spool 23 is also During the pay-off process, the spool 23 slides the spool shaft 26. Specifically, when the spool 23 rewinds the upper pull cord 24, the pull-down cord 25 is also reeled out, so that the telescopic rod portion 30 is extended; while the reel 23 winds the pull-down cord 25, the upper pull cord 24 is also reeled out. Thus, the telescopic rod portion 30 is retracted. The driving part also includes common circuit devices such as PCB circuit boards and control buttons 27, which are common methods in the field of electric control technology, so they will not be described in detail. When in use, the operator controls the winding motor 21 to rotate forward and reverse through the control button 27, thereby controlling the extension and retraction of the electric telescopic rod.

Specific embodiment: For specific products, the number of sections of the hollow rod section 32 can be freely selected according to the specific use length and tool characteristics. With reference to Figure 1, Figure 3 and Figure 8, the specific number of hollow rod sections can be five segments, namely the first hollow rod section 32A, the second hollow rod section 32B, the third hollow rod section 32C, and the first hollow rod section 32A. The diameters of the four hollow sections 32D and the fifth hollow section 32E decrease in order. The outer diameter of the first hollow section 32A is smaller than the inner diameter of the fixed section 11, and the outer diameter of the second hollow section 32B is smaller than The inner diameter of the first hollow section 32A, the outer diameter of the third hollow section 32C are smaller than the inner diameter of the second hollow section 32B, the outer diameter of the fourth hollow section 32D is smaller than the inner diameter of the third hollow section 32C, and the fifth hollow section The outer diameter of the shaft section 32E is smaller than the inner diameter of the fourth hollow shaft section 32D, and the outer diameter of the core rod 31 is smaller than the inner diameter of the fifth hollow shaft section 32E.

As shown in FIG. 1, FIG. 3 and FIG. 8, the first hollow rod section 32A is inserted in the inner cavity of the fixed rod section 11, and the lower edge ring opening 323A of the first hollow rod section 32A is located in the first limit position Below the ring 114, when the first hollow link 32A extends, when the lower edge ring 323A of the first hollow link 32A moves to the first stop ring 114, the lower edge ring of the first hollow link 32A 323A is blocked by the first stop ring 114, and the first hollow rod section 32A reaches the maximum extension length; in addition, the positively charged fixed carbon brush 112 and the negatively charged fixed carbon brush 113 at the fixed rod section 11 are respectively connected to the first hollow rod section 32A The positive electric conductive slider 3211 at the position is in contact with the negative electric conductive slider 3212;

The second hollow section 32B is inserted in the inner cavity of the first hollow section 32A. The lower edge ring opening 323B of the second hollow section 32B is located below the upper edge ring opening 322A of the first hollow section 32A. When the second hollow link 32B extends, when the lower edge ring 323B of the second hollow link 32B moves to the upper edge ring 322A of the first hollow link 32A, the lower edge ring of the second hollow link 32B 323B is blocked by the upper edge ring 322A of the first hollow section 32A, and the second hollow section 32B reaches the maximum extension length; in addition, the positive carbon brush 3222 at the first hollow section 32A and the negative carbon brush 3223 are respectively The positive conductive sliding strip 3211 at the second hollow rod section 32B is in contact with the negative conductive sliding strip 3212;

The third hollow section 32C is inserted into the inner cavity of the second hollow section 32B. The lower edge ring opening 323C of the third hollow section 32C is located below the upper edge ring opening 322B of the second hollow section 32B. When the three hollow link 32C extends, when the lower edge ring opening 323C of the third hollow link 32C moves to the upper edge ring opening 322B of the second hollow link 32B, the lower edge ring opening of the third hollow link 32C 323C is blocked by the upper edge ring 322B of the second hollow section 32B, and the third hollow section 32C reaches the maximum extension length; in addition, the positive carbon brush 3222 at the second hollow section 32B and the negative carbon brush 3223 are respectively The positive conductive sliding strip 3211 at the third hollow rod section 32C is in contact with the negative conductive sliding strip 3212;

The fourth hollow section 32D is inserted in the inner cavity of the third hollow section 32C. The lower edge ring opening 323D of the fourth hollow section 32D is located below the upper edge ring opening 322C of the third hollow section 32C, When the four hollow link 32D extends, when the lower edge ring 323D of the fourth hollow link 32D moves to the upper edge ring 322C of the third hollow link 32C, the lower edge ring of the fourth hollow link 32D 323D is blocked by the upper edge ring 322C of the third hollow section 32C, and the fourth hollow section 32D reaches the maximum extension length; in addition, the positive carbon brush 3222 at the third hollow section 32C and the negative carbon brush 3223 respectively The positive conductive sliding strip 3211 at the fourth hollow rod section 32D is in contact with the negative conductive sliding strip 3212;

The fifth hollow section 32E is inserted in the inner cavity of the fourth hollow section 32D. The lower edge ring opening 323E of the fifth hollow section 32E is located below the upper edge ring opening 322D of the fourth hollow section 32D, When the five hollow link 32E extends, when the lower edge ring 323E of the fifth hollow link 32E moves to the upper edge ring 322D of the fourth hollow link 32D, the lower edge ring of the fifth hollow link 32E 323E is blocked by the upper edge ring 322D of the fourth hollow section 32D, and the fifth hollow section 32E reaches the maximum extension length; in addition, the positive carbon brush 3222 at the fourth hollow section 32D and the negative carbon brush 3223 are respectively The positive conductive sliding strip 3211 at the fifth hollow rod section 32E is in contact with the negative conductive sliding strip 3212;

The core rod 31 is inserted into the inner cavity of the fifth hollow rod section 32E, the bottom of the core rod 31 is provided with a second limiting ring 313, and the second limiting ring 313 of the core rod 31 is located on the fifth hollow rod. Below the upper edge ring opening 322E of the section 32E, when the core rod 31 extends, when the second limiting ring 313 of the center core rod 31 moves to the upper edge ring opening 322E of the fifth hollow rod section 32E, the center core The second limit ring 313 of the rod 31 is blocked by the upper edge ring opening 322E of the fifth hollow rod section 32E, and the core rod 31 reaches the maximum extension length; in addition, the positive carbon brush 3222 at the fifth hollow rod section 32E The negative carbon brushes 3223 are in contact with the positive and negative conductive members at the core rod 31 respectively.

The principle of expansion and contraction of the electric telescopic rod: as shown in Fig. 10, when the electric telescopic rod is in the contracted state, the reel 23 will also transfer the upper wire 24 while winding the lower wire 25, and the lower wire 25 is centered on the core rod. 31 pulls down, the core rod 31 also drives the upper pull wire 24 to pull down, the upper pull wire 24 through the second movable pulley 3221 causes the adjacent hollow link to generate a downward pull force, the middle core rod is flush with the adjacent hollow link When the upper edge ring of the hollow section restricts it from no longer downwards, as the pull-down line continues to pull down, the adjacent hollow section continues to pull down the next adjacent hollow section through the upper pull line 24, and so on, until All the hollow rod sections are pulled back to the lowest position to complete the retraction work. At the same time, as shown in FIG. 11, when the electric telescopic rod needs to be extended, the spool 23 will also reel out the pull-down line 25 while rewinding the upper wire 24. Since the fixed pulley 111 is at the uppermost part of the fixed rod 11, The upper pull line 24 pulls the hollow rod section in the fixed rod section 11 upward through the fixed pulley 111 as a whole, and at the same time pulls out the pull-down line 25, when the hollow rod section in the fixed rod section 11 reaches the first limit ring 114 , The adjacent hollow rod section in the fixed rod section 11 is restricted and no longer extends upward. At this time, the adjacent hollow rod section in the fixed rod section 11 also becomes a fixed rod section, and the The second movable pulley 3221 in the upper edge of the fixed rod section becomes a fixed pulley. When the upper pull cord 24 continues to be pulled down, the second movable pulley 3221 will pull up all the hollow rod sections in the rod section and reel the wire. The pull-down wire 25 at the barrel 23 is continuously pulled out, and so on, until all the hollow rod sections reach the position of the upper edge ring mouth, and achieve full extension. Specifically, from the process of extending and retracting, it can be seen that when extending, the large hollow section is first extended, and then the adjacent small hollow section is extended, as in the first embodiment. The hollow rod section 32A first extends from the fixed rod section 11, and the second hollow rod section 32B extends from the first hollow rod section 32A, and so on; in addition, when retracting, the small hollow rod is retracted first Then retract the adjacent large hollow rod section. For example, the core rod 31 in the specific embodiment is first retracted into the fifth hollow rod section 32E, and the fifth hollow rod section 32E (including the core rod 31) Retract into the fourth hollow section 32D, and then retract the fourth hollow section 32D (including the fifth hollow section 32E and the core rod 31) into the third hollow section 32C. In addition, as shown in FIG. 12 and FIG. 13, the upper wire 24 and the lower wire 25 can be provided at two different spools 23A and 23B, respectively. Both the spool 23A and the spool 23B are It is sleeved on the winding sliding shaft 26, and both the winding drum 23A and the winding drum 23B can slide along the winding sliding shaft 26.

Embodiment 1: The present invention can be applied to a vehicle-mounted system, such as a fire truck 40. As shown in FIG. 14, since each hollow rod section 32 of the electric telescopic rod has an internal hollow structure, the water pipe connected to the fire water gun can be Passing through the hollow rod section 32, the fire water gun 41 can be installed at the core rod 31. When the electric telescopic rod is extended, the upper cable drives the hollow rod sections and the core rod, and the fire water gun 41 is directly transported to a high place. , The fire water gun 41 is supplied with water through the water pipe in the hollow rod section 32; when the electric telescopic rod is retracted, the pull-down wire pulls down the core rod to retract the fire water gun to its original position. In addition to installing a fire-fighting water gun at the center rod 31, a hanging basket can also be installed. In addition, in this embodiment, the core rod 31 can be directly pulled down through the water pipe, so that the electric telescopic rod can be retracted, that is, the water pipe can be used to replace the pull-down wire. It should be noted that when the present invention can be applied to large-scale equipment such as in-vehicle systems, multiple power systems can be used to drive the pull-up and pull-down wires respectively according to actual application requirements. This is a technical method commonly used by those skilled in the art. , So I won’t repeat it too much. The invention can be applied to other rescue vehicles in addition to being applied to fire trucks. Since there are too many applicable cases, it will not be elaborated here.

Embodiment 2: The present invention can be applied to the manipulator of mechanical equipment. The manipulator can be equipped with an electric telescopic rod for various scenarios that require high-altitude operations. Because there are too many applicable scenarios, it will not be described here. .

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", " The orientation or positional relationship indicated by "outside" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation to The specific azimuth structure and operation cannot be understood as a limitation of the present invention.

It should be understood that the terms "first", "second", etc. are used in the present invention to describe various information, but the information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, “first” information may also be referred to as “second” information, and similarly, “second” information may also be referred to as “first” information.

The foregoing does not limit the technical scope of the present invention in any way. Any modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

A new type of electric telescopic rod, characterized in that it comprises an organic seat part (10), a driving part (20), and a telescopic rod part (30). The telescopic rod part (30) is fixedly installed on the base part ( 10) The driving part (20) is arranged in the inner cavity of the base part (10), and the driving part (20) includes a winding motor (21), a reduction gear box (22), and a winding mechanism , The winding motor (21) is connected with the reduction box (22), and the reduction box (22) is connected with the winding mechanism; the telescopic rod part (30) includes a core rod (31) , And several sections of hollow rod sections (32) with different diameter specifications, and the hollow rod sections (32) are interposed from large to small according to the diameter specifications, and the core rod (31) is inserted in In the cavity of the hollow rod section (32);

The base part (10) is provided with a fixed rod section (11), the fixed rod section (11) is provided with a first limit ring (114), and the fixed rod section (11) is provided with a fixed pulley ( 111), both ends of the hollow rod section (32) are respectively provided with a first movable pulley (3231) and a second movable pulley (3221),

The wire winding mechanism includes a wire reel (23), an upper wire (24), and a lower wire (25). One end of the upper wire (24) is wound around one end of the wire reel (23), so The other end of the upper pull wire (24) is connected with the core rod (31), and the upper pull wire (24) sequentially bypasses the fixed pulley (111) and the second section of the hollow rod section (32). One movable pulley (3231) and the second movable pulley (3221), one end of the pull-down wire (25) is wound around the other end of the reel (23), and the other end of the pull-down wire (25) is connected to The core rod (31) is connected.
A new type of electric telescopic rod according to claim 1, characterized in that: the pull-down wire (25) passes through the cavity of the hollow rod section (32), and one end of the pull-down wire (25) is rolled Wound around the reel (23), the other end of the pull-down wire (25) is fixed at the bottom of the core rod (31), and the pull-down wire (25) and the core rod ( A first spring (311) is connected between 31).
A new type of electric telescopic rod according to claim 1, characterized in that: the upper pull wire (24) passes through the cavity of the hollow rod section (32), and one end of the upper pull wire (24) is rolled Wound on the reel (23), the other end of the upper pull wire (24) is fixed at the bottom of the core rod (31), the upper pull wire (24) and the core rod ( A second spring (312) is connected between 31).
A new type of electric telescopic rod according to claim 1, characterized in that: the outer surface of the hollow rod section (32) is provided with a positive electric conductive sliding strip (3211) and a negative electric conductive sliding strip (3212). One end of the positively conductive sliding strip (3211) is connected with a positively charged carbon brush (3222), and one end of the negatively conductive sliding strip (3212) is connected with a negatively charged carbon brush (3223), and the positively charged carbon brush (3222) The positive current between two adjacent hollow rod sections (32) is conducted, and the negative carbon brush (3223) conducts the negative current between two adjacent hollow rod sections (32);

The core rod (31) is provided with a positive electric conductive member and a negative electric conductive member, and the positive electric conductive member is adjacent to the hollow rod section (32) outside the core rod (31). The positive electric carbon brush (3222) is in contact, and the negative electric conductive member is in contact with the negative electric carbon brush (3223) of the hollow rod section (32) adjacent outside the core rod (31). Both the positive electric conductive member and the negative electric conductive member are connected with the electric tool at the rod end of the core rod (31);

A positive electric fixed carbon brush (112) and a negative electric fixed carbon brush (113) are arranged in the fixed rod section (11), and the positive electric fixed carbon brush (112) is adjacent to the fixed rod section (11). The positively electrically conductive slider (3211) of the hollow rod section (32) is in contact with each other, and the negatively charged fixed carbon brush (113) is in contact with the adjacent hollow rod section in the fixed rod section (11) The negative electric conductive sliding strip (3212) of (32) is in contact, and the positive electric fixed carbon brush (112) and the negative electric fixed carbon brush (113) are both connected to the power source of the electric tool.
A new type of electric telescopic rod according to claim 4, characterized in that: the hollow rod section (32) includes a middle rod section (321), an upper edge ring mouth (322), a lower edge ring mouth (323) ), the upper edge ring opening (322) and the lower edge ring opening (323) are respectively fixedly mounted on the two rod ends of the middle rod section (321), and the first movable pulley (3231) is fixedly mounted on the The lower edge ring opening (323), the second movable pulley (3221) is fixedly installed on the upper edge ring opening (322), the positive carbon brush (3222) and the negative carbon brush (3223) are fixed Set at the upper edge ring opening (322).
A new type of electric telescopic pole according to claim 1 or 3 or 5, characterized in that: there is at least one upper pull line (24), and each upper pull line (24) corresponds to one first movable pulley (3231) and one of the second movable pulleys (3221).
A new type of electric telescopic pole according to claim 1 or 2, characterized in that there is at least one pull-down wire (25).
A new type of electric telescopic rod according to claim 1, characterized in that: the winding mechanism includes a winding sliding shaft (26), the winding sliding shaft (26) and the reduction box (22) ) Is connected, the spool (23) is sleeved on the spool shaft (26), the spool (23) can slide along the spool shaft (26), the spool The wire motor (21) drives the wire winding sliding shaft (26) to rotate through the reduction box (22), thereby driving the wire winding drum (23) at the winding sliding shaft (26) to rotate line.