Large-span rapid mechanical contraction type conical telescopic cylinder

Abstract

A large-span rapid mechanical contraction type conical telescopic cylinder comprises a telescopic cylinder mechanism, a gear and rack transmission mechanism, a sealing mechanism and a main supporting mechanism are arranged in the telescopic cylinder mechanism, and the gear and rack transmission mechanism controls advancing and retreating of each layer of telescopic cylinder; a locking mechanism is arranged on the inner wall of the telescopic cylinder mechanism and used for locking the device in the telescopic operation process. An auxiliary supporting mechanism is arranged in a cavity of the telescopic cylinder mechanism and used for stabilizing the concentricity of the telescopic cylinder mechanism in the telescopic process. The main supporting mechanism and the auxiliary supporting mechanism are matched together to complete the supporting function of equipment, and the gear and rack mechanism is located at the position opposite to the bottom end of the main supporting mechanism when the main supporting mechanism works and connected with the main supporting mechanism through bolts on a motor frame; the sealing mechanism is embedded in the radial telescopic distance tail end of the telescopic cylinder and used for guaranteeing the sealing performance in the liquid conveying process. The device has the characteristics of leakage prevention, high conveying stability and high conveying efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of conveying pipeline structure design, in particular to a large-span fast mechanically retractable conical telescopic cylinder. Background Art

[0002] Currently, to reduce costs and improve transportation efficiency, most liquid transportation in normal-pressure water environments relies on sealed cylindrical structures. These structures are often used to transport liquid substances or solid-liquid mixtures. Their overall structure is relatively fixed, and static seals are generally used to prevent leakage through high contact stress. However, because traditional sealed cylindrical structures cannot adjust their span length to change the conveying distance or the docking distance with the work platform, and the cylinder itself lacks a power system, they lack advantages in efficiency and adaptability to working conditions. Furthermore, the increasing complexity of today's transportation environments and other conditions has increased the difficulty of transportation.

[0003] Domestic and foreign technological development and application practices have shown that compared with traditional straight cylindrical fixed structure conveying pipelines, such as a conveying pipeline used in the water supply and drainage field (patent number N202323323869.3), this device solves the problem of angle deviation and pipe body tilt during liquid transportation, but increases the radial length during operation and cannot adjust the pipe length according to actual work needs. Therefore, a novel design, more practical large-span fast mechanical contraction conical telescopic cylinder structure has become an important carrier for conveying solid and liquid substances. Summary of the Invention

[0004] In order to overcome the defects of the above technologies, the purpose of the present invention is to provide a large-span fast mechanical retractable conical telescopic cylinder to meet the requirements of liquid or solid-liquid mixture transportation capacity, leakage prevention, transportation stability and high transportation efficiency under normal pressure environment in water area.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A large-span, fast-moving, mechanically retractable conical telescopic cylinder comprises a telescopic cylinder mechanism, wherein a rack-and-pinion transmission mechanism, a sealing mechanism, and a main support mechanism are provided inside the telescopic cylinder mechanism. The rack-and-pinion transmission mechanism controls the forward and backward movement of each layer of the telescopic cylinder.

[0007] A locking mechanism is provided on the inner wall of the telescopic cylinder mechanism, and the locking mechanism is used to complete the locking of the device during the telescopic operation;

[0008] An auxiliary support mechanism is provided inside the cavity of the telescopic cylinder mechanism, and the auxiliary support mechanism is used to stabilize the concentricity of the telescopic cylinder mechanism during the telescopic process;

[0009] The main support mechanism and the auxiliary support mechanism cooperate to complete the support function of the equipment, wherein the rack and pinion mechanism is located at the bottom relative position of the main support mechanism when it is working, and is connected to the main support mechanism through bolts on the motor frame;

[0010] The sealing mechanism is embedded in the end of the radial telescopic distance of the telescopic cylinder to ensure the sealing during the liquid transportation process.

[0011] The locking mechanism, consisting of a locking ball and spring seat, is coupled to the main support mechanism via bolts. The sealing mechanism is a sealing ring embedded at the radial extension end of the telescopic tube to ensure tightness during liquid delivery. The auxiliary support mechanism is a centralizer, connected to the support tube via a stud to ensure concentricity after the sleeve is extended.

[0012] The telescopic cylinder mechanism includes a telescopic cylinder 1 2, a telescopic cylinder 2 7, and a telescopic cylinder 3 12. Each telescopic cylinder is composed of two layers: a cylindrical conical hollow outer shell and a cylindrical hollow inner wall; the cylindrical hollow inner wall is located inside the cylindrical conical hollow outer shell;

[0013] Among them, the diameter of the three-stage telescopic cylinder is reduced from left to right in a progressive order during operation. Telescopic cylinder 1-2 is fixed to the left position during operation by a flange, and the remaining telescopic cylinders cooperate with other supporting mechanisms through bolts.

[0014] Each level of the telescopic cylinder is connected to each other through a support plate and a gear rack mechanism. A support plate is provided at the end of the telescopic cylinder, and the support plate is connected to the motor frame and rack in the gear rack mechanism. Through the mutual cooperation of the motor frame, rack and support plate, each level of the telescopic cylinder is connected to each other.

[0015] The main support mechanism includes a flange 1, a spring seat group 1 3, a support plate 1 4, a spring seat group 2 8, a support plate 2 9 and an end support plate 13;

[0016] The left inner wall of the telescopic cylinder 2 7 is provided with a support plate 1 4, the left inner wall of the telescopic cylinder 3 12 is provided with a support plate 2 9, and the right end of the telescopic cylinder 3 12 is provided with an end support plate 13;

[0017] Among them, the support plate 1 4 and the support plate 2 9 in the middle position each include two spring seat groups. One group of support plates has four spring seats distributed at the same angle. Each spring seat is connected to the support plate by bolts. There is a fan-shaped structure between two adjacent spring seats in one group. There is a spring inside the spring seat. There is a locking ball 28 in contact with the spring at the end opening, which is also included in the locking mechanism.

[0018] The end support plate 13 is fixed to the end of the conical telescopic cylinder structure by bolts and a threaded base plate. The edge of the flange 1 is punched with a threaded through hole for connecting the conical telescopic cylinder with other equipment.

[0019] The auxiliary support mechanism includes three centralizers of the same model but different sizes, each centralizer is connected to a sleeve, and the centralizer includes a centralizer piece 5, a centralizer frame 6, a centralizer piece 10, a centralizer frame 11, a centralizer piece 14, and a centralizer frame 15;

[0020] The straightening piece is elastic and is an elastically compressible structure with an arc. The straightening frame is a hollow circular sleeve-shaped structure. The outer surface of the straightening frame cooperates with the straightening piece. Each straightening piece is connected to the straightening frame by a set screw and is fixed to the end of each layer of the sleeve together with the straightening frame by screws to stabilize the concentricity of the sleeve during extension and contraction.

[0021] The sleeves of each layer are arranged at the same horizontal position of the telescopic cylinder 1 2 , the telescopic cylinder 2 7 and the telescopic cylinder 3 12 .

[0022] The sleeve is retractable and consists of three layers: sleeve one 16, sleeve two 21, and sleeve three 26. Each sleeve has the same standard but different diameters. They are all cylindrical sleeve structures with through holes at the end for connecting other components. Sleeve one 16 is fixed to flange 1 by bolts, sleeve two 21 is fixed to support plate one 4 by bolts, and sleeve three 26 is fixed to support plate two 9 by bolts. The sleeve cooperates with the stabilizer to ensure the stability of the main equipment.

[0023] The locking mechanism includes a spring seat group 1 3 and a spring seat group 2 8, wherein the spring seat group 1 3 is arranged on the support plate 1 4, and the spring seat group 2 8 is arranged on the support plate 2 9;

[0024] Each spring seat group has four spring seats, the ends of which are in contact with the inner wall of the telescopic cylinder. During the telescopic operation of the device, every time a position that needs to be locked is encountered, the locking ball 28 inside the spring seat will pop out into the groove reserved on the inner wall of the telescopic cylinder, thereby completing the locking.

[0025] The rack and pinion transmission mechanism includes a rack 17, a gear set 18, a rack 22 and a gear set 23;

[0026] Rack 1 17 and gear set 1 18 are matched together, and rack 2 22 and gear set 2 23 are matched together;

[0027] Among them, each gear set is driven by a motor, and the motor is placed on the motor frame. After the motor frame is connected to the gear set, it is connected to the support plate with bolts. Motor frame 19 is connected to support plate 1 4, and motor frame 2 24 is connected to support plate 2 9.

[0028] Each rack is fixed to the telescopic cylinder using a stud connection. Rack 17 is fixed to the bottom of the left end flange of telescopic cylinder 1 2, and rack 2 22 is fixed to the bottom of the left support plate of telescopic cylinder 2 7. After driving the gear set, the motor can drive the support plate, thereby controlling the forward and backward movement of each layer of the telescopic cylinder except the fixed end.

[0029] The sealing mechanism includes a sealing strip 1 20 fixed in the gap between the telescopic cylinder 1 2 and the telescopic cylinder 2 7 , and a sealing strip 25 fixed in the gap between the telescopic cylinder 2 7 and the telescopic cylinder 3 12 .

[0030] Beneficial effects of the present invention:

[0031] This tapered telescopic cylinder features a simple structure and innovative design. When fully extended, the cylinders at each stage reach their maximum radial working length, with the sealing rings tightly fitting against the ends of the cylinders and the locking mechanism locked. This operating mode can completely replace welded tapered sleeves. Driven by a motor, the system significantly enhances the flexibility and adaptability of existing equipment, allowing the arrangement of the cylinders to be adjusted according to actual needs.

[0032] The present invention is scalable, thus reducing the effective length of the support platform, increasing the span, and thus reducing the volume and weight of the overall structure. It also reduces the floor space required, allowing the device to be more compactly integrated with other devices within a limited space.

[0033] The invention locks in the maximum extended state, completely sealing the gap between the inner and outer cavities of the sleeve, effectively preventing liquid from entering the sealed conical sleeve. After the work is completed, the telescopic actuator can complete the retraction action, making it convenient for workers to inspect and repair.

[0034] The multi-stage telescopic device of the present invention provides guidance for the design of longer tapered sleeves, such as tapered sleeves of different lengths such as 5 meters, 10 meters, and 15 meters. It is only necessary to continue to add telescopic cylinders, transmission mechanisms, and support mechanisms based on this design. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural schematic diagram (cross-sectional view) of the present invention.

[0036] Figure 2 Schematic diagram of the main support mechanism (partial).

[0037] Figure 3 Schematic diagram of the rack and pinion transmission mechanism (partial).

[0038] Figure 4 Schematic diagram of the auxiliary support mechanism (partial).

[0039] Figure 5 Schematic diagram of the locking mechanism (partial).

[0040] Figure 6 Schematic diagram of a set of support plates and spring seats in the main support mechanism (side view).

[0041] Figure 7 Schematic diagram of the support plate structure. DETAILED DESCRIPTION

[0042] The present invention will be described in further detail below with reference to the accompanying drawings.

[0043] Reference Figure 1 As shown, a large-span fast mechanical retractable conical telescopic cylinder includes a telescopic cylinder mechanism, a main support mechanism, a gear rack transmission mechanism, a locking mechanism, a sealing mechanism, and an auxiliary support mechanism that cooperate with each other.

[0044] Reference Figure 1 As shown, the telescopic cylinder mechanism comprises multiple stages, including telescopic cylinder 1 2, telescopic cylinder 2 7, and telescopic cylinder 3 12. These stages, in the form of a tapered, larger cylinder encasing a smaller cylinder, form the core of the device. Each stage of the telescopic cylinders is interconnected via a support plate and a rack-and-pinion mechanism. A support plate is provided at the end of the telescopic cylinder, to which the motor frame and rack of the rack-and-pinion mechanism are connected. The motor frame, rack, and support plate interact to form the interconnected structure, connecting each stage of the telescopic cylinders.

[0045] Reference Figure 2 As shown, the main support mechanism includes a flange 1, a spring seat 3, a support plate 4, a spring seat 8, a support plate 9 and an end support plate 13.

[0046] Flange 1 is fixed to the end face by bolts, such as Figure 6 、 Figure 7 As shown, a set of support plates has four spring seats distributed at the same angle. Each spring seat is connected to the support plate by bolts. There are two sets of such support plates, which jointly bear the circumferential support of the conical telescopic cylinder during extension and extension and working. A motor seat is installed at the bottom of the support plate to use the motor to drive the gear rack transmission mechanism to realize the extension and retraction of the telescopic cylinder, as shown in FIG. Figure 2 As shown, the rack and pinion transmission mechanism includes rack 17, gear set 18, rack 22, and gear set 23, wherein gear set 18 and gear set 23 are respectively connected to the motor, and driven by the motor to perform lateral displacement movement on the rack matched therewith, while driving the support plate connected to the motor base and driving the movement of the telescopic cylinders at all levels to achieve the purpose of telescopic cylinder extension.

[0047] Reference Figure 4As shown, the auxiliary support mechanism includes a straightening piece 5, a straightening frame 6, a straightening piece 2 10, a straightening frame 2 11, a straightening piece 3 14, a straightening frame 3 15, a sleeve 16, a sleeve 21, and a sleeve 3 26. The straightening piece 15 and the straightening frame 1 6, the straightening piece 2 10 and the straightening frame 2 11, and the straightening piece 3 14 and the straightening frame 3 15 respectively form three straightening devices, which are connected to the above three sleeves by bolts.

[0048] When the main support mechanism is driven by the motor to move, the sleeve is also driven. At this time, the centralizer on the sleeve is used to eliminate the circumferential deviation that may occur during the movement of the sleeve and maintain concentricity.

[0049] Reference Figure 5 As shown, the locking mechanism includes a spring seat group 1 3 and a spring seat group 2 8, and its internal structure mainly consists of a spring inside the spring seat, a locking ball 28 and a groove around the telescopic cylinder.

[0050] During the extension and retraction of the sleeve, the locking ball 28 rolls along the inner wall of the sleeve. At this time, the spring is in a compressed state. When the telescopic cylinder moves to the extreme position (at the groove), the locking ball 28 is pushed out by the action of the spring and enters the groove. At this time, the two sleeves will be fixed; during the recovery of the telescopic cylinder, due to the small inclination angle of the recovery end of the card slot, the locking ball 28 can pop out of the groove and be retracted during the retraction of the telescopic cylinder, completing the recovery of the sleeve.

[0051] Reference Figure 1 As shown, the sealing mechanism includes a sealing strip 1 20 and a sealing strip 25. When the telescopic cylinder moves to the extreme position, the sealing strips will be squeezed and fill the sealed chamber formed by the two adjacent sleeves to achieve sealing between the two sleeves.

[0052] Working principle of the present invention:

[0053] like Figure 3 As shown, in order to realize the telescopic movement of the conical telescopic cylinder, a gear rack mechanism is added inside the telescopic cylinder, and a motor is added to provide power to drive the gear to make a lateral displacement movement on the rack, thereby driving the motor frame connected to the gear. The motor frame is connected to the support plate through a bolt group, and the component close to the flange 1 is defined as the first level. When the telescopic cylinder begins to extend outward, the first-level motor drives the gear 18 to move to the limit position on the rack 17. At this time, the telescopic cylinder 1 2 and the telescopic cylinder 2 7 are also relatively displaced to the limit position, the locking mechanism works, and the locking ball 28 pops out to complete the locking. At this time, the first-level support plate 1 4 also moves to the limit position, and the next-level motor starts to work. The above steps are repeated to drive the next-level gear 23 to move on the rack 22, and drive the next-level telescopic cylinder to extend until the extension is completed, thereby realizing the gradual telescopic transmission of each level of sleeves.

[0054] The present invention has a large docking diameter with the working platform and high conveying efficiency. The conical telescopic cylinder wall itself is dynamic and can adjust the telescopic length to adapt to the conveying environment and reduce the effective length of the supporting platform, thereby reducing the volume and weight of the overall structure, reducing the floor space, and completing relevant work requirements.

Claims

1. A large-span, fast-moving mechanically retractable conical telescopic cylinder, characterized in that: It includes a telescopic cylinder mechanism, wherein a rack and pinion transmission mechanism, a sealing mechanism and a main support mechanism are arranged inside the telescopic cylinder mechanism, and the rack and pinion transmission mechanism controls the forward and backward movement of each layer of the telescopic cylinder; A locking mechanism is provided on the inner wall of the telescopic cylinder mechanism, and the locking mechanism is used to complete the locking of the device during the telescopic operation; An auxiliary support mechanism is provided inside the cavity of the telescopic cylinder mechanism, and the auxiliary support mechanism is used to stabilize the concentricity of the telescopic cylinder mechanism during the telescopic process; The main support mechanism and the auxiliary support mechanism cooperate to complete the support function of the equipment, wherein the rack and pinion mechanism is located at the bottom relative position of the main support mechanism when it is working, and is connected to the main support mechanism through bolts on the motor frame; The sealing mechanism is embedded in the end of the radial telescopic distance of the telescopic cylinder to ensure the sealing during the liquid transportation process.

2. The large-span, fast-moving mechanically retractable conical telescopic cylinder according to claim 1, characterized in that: The telescopic cylinder mechanism includes a telescopic cylinder 1 (2), a telescopic cylinder 2 (7), and a telescopic cylinder 3 (12), each of which is composed of two layers: a cylindrical conical hollow outer shell and a cylindrical hollow inner wall; the cylindrical hollow inner wall is located inside the cylindrical conical hollow outer shell; Among them, the diameter of the three-stage telescopic cylinder is reduced from left to right in a progressive order during operation. Telescopic cylinder one (2) is fixed to the left position during operation by a flange, and the remaining telescopic cylinders cooperate with other supporting mechanisms by bolts.

3. The large-span, fast-moving mechanically retractable conical telescopic cylinder according to claim 2, characterized in that: Each level of the telescopic cylinder is connected to each other through a support plate and a gear rack mechanism. A support plate is provided at the end of the telescopic cylinder, and the support plate is connected to the motor frame and rack in the gear rack mechanism. Through the mutual cooperation of the motor frame, rack and support plate, each level of the telescopic cylinder is connected to each other.

4. The large-span, fast-moving mechanically retractable conical telescopic cylinder according to claim 1, characterized in that: The main support mechanism comprises a flange (1), a spring seat group 1 (3), a support plate 1 (4), a spring seat group 2 (8), a support plate 2 (9) and an end support plate (13); A support plate 1 (4) is provided on the left inner wall of the telescopic cylinder 2 (7), a support plate 2 (9) is provided on the left inner wall of the telescopic cylinder 3 (12), and an end support plate (13) is provided on the right end of the telescopic cylinder 3 (12); Among them, the support plate 1 (4) and the support plate 2 (9) in the middle position respectively include two spring seat groups, one group of support plates has four spring seats distributed at the same angle, each spring seat is connected to the support plate by bolts, and there is a spring inside the spring seat, and a fan-shaped structure is formed between two adjacent spring seats in one group, and a locking ball (28) in contact with the spring is provided at the end opening, which is also included in the locking mechanism; The end support plate (13) is connected and fixed to the end of the conical telescopic cylinder structure through bolts and a threaded base plate. The edge of the flange (1) is punched with a threaded through hole for connecting the conical telescopic cylinder with other equipment.

5. The large-span, fast-moving mechanically retractable conical telescopic cylinder according to claim 1, characterized in that: The auxiliary support mechanism includes three centralizers of the same type but different sizes, each centralizer is connected to a sleeve, and the centralizer includes a centralizer piece 1 (5), a centralizer frame 1 (6), a centralizer piece 2 (10), a centralizer frame 2 (11), a centralizer piece 3 (14), and a centralizer frame 3 (15); The straightening piece is elastic and is an elastically compressible structure with an arc. The straightening frame is a hollow circular sleeve-shaped structure. The outer surface of the straightening frame cooperates with the straightening piece. Each straightening piece is connected to the straightening frame by a set screw and is fixed to the end of each layer of the sleeve together with the straightening frame by screws to stabilize the concentricity of the sleeve during extension and contraction. The sleeves of each layer are arranged at the same horizontal position as the telescopic cylinder 1 (2), the telescopic cylinder 2 (7) and the telescopic cylinder 3 (12).

6. The large-span, fast-moving mechanically retractable conical telescopic cylinder according to claim 5, characterized in that: The sleeve is retractable and consists of three layers: sleeve one (16), sleeve two (21), and sleeve three (26). Each sleeve has the same standard but different diameters, and is a cylindrical sleeve structure with a through hole at the end for connecting other components; wherein sleeve one (16) is fixed to flange (1) by bolts, sleeve two (21) is fixed to support plate one (4) by bolts, and sleeve three (26) is fixed to support plate two (9) by bolts. The sleeve cooperates with the stabilizer to ensure the stability of the main equipment.

7. The large-span, fast-moving mechanically retractable conical telescopic cylinder according to claim 1, characterized in that: The locking mechanism comprises a spring seat group 1 (3) and a spring seat group 2 (8), wherein the spring seat group 1 (3) is arranged on a support plate 1 (4), and the spring seat group 2 (8) is arranged on a support plate 2 (9); Each spring seat group has four spring seats, the ends of which are in contact with the inner wall of the telescopic cylinder. During the telescopic operation of the device, each time a position requiring locking is encountered, the locking ball (28) inside the spring seat will pop out into the groove reserved on the inner wall of the telescopic cylinder, thereby completing the locking.

8. The large-span, fast-moving mechanically retractable conical telescopic cylinder according to claim 1, characterized in that: The rack and pinion transmission mechanism includes a rack 1 (17), a gear set 1 (18), a rack 2 (22) and a gear set 2 (23); Rack 1 (17) and gear set 1 (18) are arranged in cooperation, and rack 2 (22) and gear set 2 (23) are arranged in cooperation; Each gear set is driven by a motor, and the motor is placed on a motor frame. After the motor frame is connected to the gear set, it is connected to the support plate using bolts. Motor frame one (19) is connected to support plate one (4), and motor frame two (24) is connected to support plate two (9).

9. The large-span, fast-moving mechanically retractable conical telescopic cylinder according to claim 8, characterized in that: Each rack is fixed to the telescopic cylinder using a stud bolt. Rack 1 (17) is fixed to the bottom of the left end flange of telescopic cylinder 1 (2), and rack 2 (22) is fixed to the bottom of the left support plate of telescopic cylinder 2 (7). After driving the gear set, the motor can drive the support plate, thereby controlling the forward and backward movement of each layer of telescopic cylinder except the fixed end.

10. The large-span, fast-moving mechanically retractable conical telescopic cylinder according to claim 1, characterized in that: The sealing mechanism comprises a sealing strip 1 (20) fixed in the gap between the telescopic cylinder 1 (2) and the telescopic cylinder 2 (7), and a sealing strip 2 (25) fixed in the gap between the telescopic cylinder 2 (7) and the telescopic cylinder 3 (12).

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