A rigid chain driven large stroke filling system and method of use
By using a rigid chain-driven telescopic arm and chain box structure, the problems of high loading difficulty and torsion in the loading process of rockets and other products are solved, and the reliability and safety of long-stroke loading are improved. The operation is simple and highly standardized.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BEIJING INST OF SPACE LAUNCH TECH
- Filing Date
- 2023-08-10
- Publication Date
- 2026-05-19
AI Technical Summary
The existing horizontal loading method has problems such as high loading difficulty, easy twisting, and low reliability in the loading process of rockets and other products, which are more serious under long stroke and heavy load conditions.
A long-stroke filling system based on rigid chain drive is adopted, including a telescopic arm and a chain box. The telescopic arm is extended and retracted by a geared motor driving the rigid chain. The support wheel set is used to support the inner wall of the filling cylinder to prevent torsion, and the stability of the filling process is ensured by the support wheel set and the sliding limit mechanism.
It achieves high reliability and good anti-torsion effect in long-stroke filling, is easy to operate and highly standardized, and enhances the safety and reliability of the filling process.
Smart Images
Figure CN117073459B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a horizontal filling technology, specifically to a long-stroke filling system based on a rigid chain drive, and a method for using the filling system. Background Technology
[0002] In the aerospace field, rockets and other products need to be loaded into launch canisters before transport or launch. Currently, the main method used in this field is horizontal loading, where the product and launch canister are placed horizontally along a straight line, and a propulsion device pushes the product into the launch canister from front to back. This loading method, because there is no axial load point inside the launch canister, not only increases the thrust requirements and loading difficulty, but also easily leads to torsion, affecting loading reliability. These problems are particularly severe for products requiring long strokes and high loads. Summary of the Invention
[0003] The purpose of this invention is to provide a long-stroke loading system and its usage method based on rigid chain drive. The system has the advantages of simple structure, strong adaptability, good safety and high reliability; the method has the advantages of simple operation and high degree of standardization.
[0004] To address the aforementioned problems in the prior art, this invention provides a long-stroke loading system based on a rigid chain drive, comprising a telescopic arm and a chain box. The telescopic arm comprises multiple arm sections that are sequentially sleeved and slidably fitted from front to back. The last arm section is fixed to the upper side of the chain box. Support wheel sets are respectively provided on the lower side of the first arm section and a middle arm section. A drive box is provided on the rear side of the chain box. A drive sprocket in the drive box is connected to a reduction motor via a coupling. One end of the rigid chain in the chain box passes around the drive sprocket and extends from back to front into the telescopic arm, connecting to the rear end of the first arm section.
[0005] Furthermore, the present invention provides a long-stroke loading system based on a rigid chain drive, wherein, except for the first arm section, the rear end cavities of the remaining arm sections are respectively fixed with an upper support block and a lower support block, and a rigid chain passes through the upper support block and the lower support block, and the rigid chain slides in cooperation with the upper support block and the lower support block of each arm section.
[0006] Furthermore, the present invention provides a long-stroke loading system based on a rigid chain drive, wherein, except for the first arm section, front sliders are fixed at the four corners of the inner cavity at the front end of each of the remaining arm sections; except for the last arm section, extension-to-position limiting frames that cooperate with the front sliders are fixed on the outer rear end of each of the remaining arm sections, and rear sliders are fixed at the four corners of the extension-to-position limiting frames.
[0007] Furthermore, the present invention provides a long-stroke loading system based on a rigid chain drive, wherein a reinforcing frame is fixed to the outer front end of the last arm section; in addition to the last arm section, the outer front end of each of the other arm sections is respectively fixed with a receiving positioning limit frame that cooperates with the front end of the next arm section.
[0008] Furthermore, the present invention provides a long-stroke filling system based on a rigid chain drive, wherein the front end of the first section of the arm is fixed with a vertical support lug, and also includes a connecting seat corresponding to the support lug and detachably fixed to the rear end of the filling product. The connecting seat is provided with a U-shaped fork that cooperates with the support lug, and the two side walls of the support lug and the U-shaped fork are respectively provided with pin holes.
[0009] Furthermore, the present invention provides a long-stroke loading system based on a rigid chain drive, wherein the telescopic arm is equipped with a laser rangefinder for measuring the extension distance, and a load sensor is fixed between the support lug and the first arm section.
[0010] Furthermore, the present invention provides a long-stroke loading system based on a rigid chain drive, wherein the support wheel assembly includes a mounting frame and two roller assemblies. The mounting frame is fixed to the lower side of the receiving and positioning limit frame of the corresponding arm body. The two roller assemblies are symmetrically distributed from left to right. Each roller assembly includes a wheel frame and two rollers spaced apart on the wheel frame in the front-rear direction. The upper middle part of the wheel frame is provided with a bolt connected to the mounting frame. The wheel frame is provided with guide rods on the front and rear sides of the bolt, respectively. The guide rods slide in cooperation with guide holes on the mounting frame.
[0011] Furthermore, the present invention provides a long-stroke filling system based on rigid chain drive, wherein the two roller assemblies are provided with an included angle, the vertex of which is located on the axis of the filling cylinder.
[0012] Furthermore, the present invention provides a long-stroke loading system based on a rigid chain drive, which further includes a control device connected to a geared motor, a load sensor, and a laser rangefinder.
[0013] Based on the same concept, the present invention also provides a method of using the above-mentioned filling system, comprising the following steps:
[0014] S1. Arrange the filling cylinder and the filling product in sequence from back to front on the front side of the telescopic boom, and fix the connecting seat at the rear end of the filling product.
[0015] S2. The rigid chain is driven by the geared motor to extend out of the chain box. Under the pushing action of the rigid chain, the telescopic arm extends from back to front and enters the filling cylinder.
[0016] S3. When the lug contacts the U-shaped fork, stop the reduction motor and use a pin to insert into the pin hole of the lug and the U-shaped fork to establish a connection between the two.
[0017] S4. The rigid chain is driven to move in the opposite direction by the geared motor. Under the pulling action of the rigid chain, the telescopic arm is retracted and the filling product is gradually pulled into the filling cylinder.
[0018] S5. When the product is filled into the filling cylinder, stop the reduction motor and disconnect the lug from the U-shaped fork by pulling out the pin.
[0019] S6. Drive the rigid chain to continue moving in the opposite direction through the geared motor until the telescopic arm is retracted into place, and remove the connecting seat from the filling product.
[0020] Compared with the prior art, the present invention, a long-stroke loading system and its usage method based on rigid chain drive, has the following advantages: The present invention sets up a telescopic arm and a chain box, so that the telescopic arm is set up with multiple arm sections that are sequentially nested and slidably fitted from front to back. The last arm section is fixed on the upper side of the chain box, and the lower side of the first arm section and a middle arm section are respectively provided with support wheel sets. A drive box is fixed on the rear side of the chain box, and the drive sprocket in the drive box is connected to a reduction motor through a coupling. One end of the rigid chain in the chain box passes around the drive sprocket and extends from back to front into the telescopic arm to connect with the rear end of the first arm section. This constitutes a simple, adaptable, safe, and reliable long-stroke filling system based on a rigid chain drive. In practical applications, the filling cylinder and the filling product are first placed sequentially from back to front on the front side of the telescopic arm. The rigid chain is extended from the chain box by a geared motor. Under the pushing action of the rigid chain, the telescopic arm extends from back to front and enters the filling cylinder. When the front end of the telescopic arm contacts the filling product, the geared motor stops, and the telescopic arm and the filling product are connected. Then, the rigid chain is driven to move in the opposite direction by the geared motor. Under the pulling action of the rigid chain, the telescopic arm is retracted, gradually pulling the filling product into the filling cylinder. When the filling product is in place in the filling cylinder, the geared motor stops. Next, the connection between the telescopic arm and the filling product is released, and the rigid chain is driven to continue moving in the opposite direction by the geared motor until the telescopic arm is retracted to its final position. This completes the filling process. The process of pushing the filling product out of the filling cylinder is the reverse of the filling process described above and will not be described in detail here. This invention utilizes a telescopic arm and chain box, employing a rigid chain to drive the telescopic arm's extension and retraction. Support wheels are installed on the underside of the first and intermediate arm sections. During filling, a sliding limiting mechanism on the telescopic arm effectively prevents torsion. The support wheels, resting on the inner wall of the filling cylinder, increase the axial load application point, effectively preventing deflection of the telescopic arm and reducing the required loading force. Compared to existing filling methods that push the product from the front, this invention not only increases the filling stroke and load but also improves anti-torsion effects and filling reliability. The filling system provided by this invention offers advantages such as ease of operation, high standardization, and safety and reliability.
[0021] The following detailed description, in conjunction with the accompanying drawings, illustrates a long-stroke loading system based on a rigid chain drive and its usage method according to the present invention. Attached Figure Description
[0022] Figure 1 This is a front view schematic diagram of a long-stroke loading system based on rigid chain drive according to the present invention;
[0023] Figure 2 This is a top view schematic diagram of a long-stroke loading system based on rigid chain drive according to the present invention;
[0024] Figure 3 This is an exploded view of the arm body excluding the first and last sections in this invention;
[0025] Figure 4 This is an axonometric view of the support wheel assembly in this invention;
[0026] Figure 5 and Figure 6 This is a schematic diagram of the filling process. Detailed Implementation
[0027] First, it should be noted that the directional terms such as up, down, left, right, front, and back used in this invention are merely descriptions based on the accompanying drawings for ease of understanding, and are not intended to limit the technical solution or the scope of protection claimed in this invention.
[0028] like Figures 1 to 6 The present invention illustrates a specific embodiment of a long-stroke loading system based on a rigid chain drive, comprising a telescopic arm 1 and a chain box 2. The telescopic arm 1 is configured with multiple arm sections 11 sequentially fitted and slidably engaged from front to back. The last arm section 11 is fixed to the upper side of the chain box 2, and support wheel sets 3 are respectively provided on the lower sides of the first arm section 11 and one of the middle arm sections 11. A drive box 4 is located at the rear of the chain box 2, and a drive sprocket in the drive box 4 is connected to a reduction motor 5 via a coupling. One end of a rigid chain 21 in the chain box 2 passes around the drive sprocket and extends from back to front into the telescopic arm 1, connecting with the rear end of the first arm section 11.
[0029] The above structural configuration constitutes a simple, adaptable, safe, and reliable long-stroke filling system based on a rigid chain drive. In practical applications, the filling cylinder 100 and the filling product 200 are first arranged sequentially from back to front on the front side of the telescopic arm 1. The rigid chain 21 is extended from the chain box 2 by the geared motor 5. Under the pushing action of the rigid chain 21, the telescopic arm 1 extends from back to front and enters the filling cylinder 100. When the front end of the telescopic arm 1 contacts the filling product 200, the geared motor 5 is stopped, and the telescopic arm 1 and the filling product 200 are connected. Then, the rigid chain 21 is driven to move in the opposite direction by the geared motor 5. Under the pulling action of the rigid chain 21, the telescopic arm 1 is retracted, and the filling product 200 is gradually pulled into the filling cylinder 100. When the filling product 200 is in place in the filling cylinder 100, the geared motor 5 is stopped. Then, the connection between the telescopic arm 1 and the filling product 200 is released, and the rigid chain 21 is driven by the geared motor 5 to continue moving in the opposite direction until the telescopic arm 1 is retracted into place. This completes the filling process of the filling product. The process of pushing the filling product 200 out of the filling cylinder 100 is the reverse of the filling process described above, and will not be repeated here. This invention, by setting up a telescopic arm 1 and a chain box 2, uses a rigid chain 21 to drive the telescopic arm 1 to extend and retract. Support wheel sets 3 are set on the lower side of the first arm section 11 and a middle arm section 11. During the filling process, the sliding limiting mechanism of the telescopic arm 1 effectively prevents torsion. The support wheel sets 3, supporting the inner wall of the filling cylinder 100, increase the axial load application point, effectively preventing deflection of the telescopic arm 1 and reducing the pulling force required for filling. Compared with the existing filling method of pushing from the front end of the filling product, this not only increases the filling stroke and filling load, but also improves the anti-torsion effect and filling reliability. It should be noted that the first arm section 11 refers to the foremost arm section 11, and the last arm section 11 refers to the rearmost arm section 11; the loading cylinder 100 refers to a cylindrical container such as a launch tube, and the loading product 200 refers to a device or equipment such as a rocket that needs to be loaded into the loading cylinder 100. In actual loading, the loading cylinder 100 and the loading product 200 are placed on the support platform respectively, and a sliding rail mechanism is provided between the loading product 200 and the support platform. The loading cylinder 100, the loading product 200 and the support platform are all existing technologies in the field, and their structure and arrangement are well known to those skilled in the art.
[0030] As an optimization, in this specific embodiment, except for the first arm section 11, upper support blocks 12 and lower support blocks 13 are fixed in the rear end cavities of the remaining arm sections 11, forming a channel through which the rigid chain 21 passes between the upper support blocks 14 and the lower support blocks 15, and allowing the rigid chain 21 to slide in contact with the upper support blocks 12 and the lower support blocks 13 of each arm section 11. This structure, when the telescopic arm 1 extends, ensures the rigidity of the rigid chain 21 by supporting and limiting the rigid chain 21 through the upper support blocks 12 and the lower support blocks 13 of each arm section 11, thereby improving structural stability and the reliability of the loading drive. As an optimized solution, in this specific embodiment, except for the first arm section 11, front sliders 14 are fixed at the four corners of the inner cavity at the front end of each of the remaining arm sections 11; and except for the last arm section 11, extension-to-position limiting frames 15 that cooperate with the front sliders 14 are fixed on the outer rear end of each of the remaining arm sections 11, and rear sliders 16 are fixed at the four corners of the extension-to-position limiting frames 15. This structural arrangement, through the sliding cooperation between the front sliders 14 and the preceding arm section 11 of each arm section 11, and through the sliding cooperation between the rear sliders 16 and the following arm section 11 of each arm section 11, forms a stable sliding cooperation structure between adjacent arm sections 11, ensuring the smooth operation of the telescopic arm 1. Furthermore, the blocking effect of the front sliders 14 on the extension-to-position limiting frames 15 prevents slippage between arm sections 11, ensuring structural stability. Meanwhile, in this specific embodiment, a reinforcing frame is fixed to the outer front end of the final arm section 11 to enhance structural stability. In addition to the final arm section 11, receiving and positioning limiting frames 17, which cooperate with the front end of the next arm section 11, are fixed to the outer front end of each of the other arm sections 11, serving both to limit retraction and enhance structural stability. In practical applications, the reinforcing frame of the final arm section 11 and the receiving and positioning limiting frames 17 typically employ the same structure to simplify structural design.
[0031] In a specific embodiment, to improve the convenience of connection, the present invention fixes a vertical support lug 18 to the front end of the first section of the arm 11, and provides a connecting seat 6 corresponding to the support lug 18 and detachably fixed to the rear end of the loading product 200. The connecting seat 6 has a U-shaped fork 61 that mates with the support lug 18, and pin holes are provided on both side walls of the support lug 18 and the U-shaped fork 61. This configuration only requires inserting a pin into the pin holes of both the support lug 18 and the U-shaped fork 61 simultaneously; even if a connection is established between the telescopic arm 1 and the loading product 200, the pin can be removed to resolve the connection issue. For convenient measurement and control, this specific embodiment includes a laser rangefinder (not shown in the figure) on the telescopic arm 1 for measuring the extension distance, and a load sensor 19 is fixed between the support lug 18 and the first section of the arm 11 to measure the loading load; and a control device is provided that is connected to the reduction motor 5, the load sensor 19, and the laser rangefinder, respectively.
[0032] As an optimized solution, this specific embodiment adopts the following structure for the support wheel assembly 3: it includes a mounting frame 31 and two roller assemblies 32. The mounting frame 31 is fixed to the lower side of the receiving and positioning limit frame 17 of the corresponding arm body 11, and the two roller assemblies 32 are symmetrically distributed from left to right. The roller assembly 32 is equipped with a wheel frame 321 and two rollers 322 that are spaced apart on the wheel frame 321 in the front-back direction. A bolt 323 connected to the mounting frame 31 is provided in the upper middle part of the wheel frame 321. Guide rods 324 are respectively provided on the wheel frame 321 on the front and rear sides of the bolt 323, and the guide rods 324 slide with the guide holes on the mounting frame 31. This configuration of the support wheel assembly 3 has the characteristics of simple structure, convenient adjustment, and stable support. The height of the support wheel assembly 3 can be adjusted by adjusting the tightening position of the nut on the bolt 323, and the structural stability is ensured by the guide rods 324 on both sides of the bolt 323. As an optimization, this specific embodiment sets an included angle between the two roller assemblies 32, with the vertex of the included angle located on the axis of the filling cylinder 100. This arrangement enhances support stability and anti-torsion effect by having each roller 322 of the support wheel assembly 3 radially supported on the inner wall of the filling cylinder 100.
[0033] Based on the same concept, the present invention also provides a method of using the above-mentioned filling system, comprising the following steps:
[0034] S1. The filling cylinder 100 and the filling product 200 are arranged sequentially from back to front on the front side of the telescopic arm 1, and the connecting seat 6 is fixed at the rear end of the filling product 200.
[0035] S2. The rigid chain 21 is driven by the geared motor 5 to extend out of the chain box 2. Under the pushing action of the rigid chain 21, the telescopic arm 1 extends from back to front and enters the filling cylinder 100.
[0036] S3. When the lug 18 contacts the U-shaped fork 61, stop the reduction motor 5 and use a pin to insert into the pin hole of the lug 18 and the U-shaped fork 61 to establish a connection between the two.
[0037] S4. Drive the rigid chain 21 to move in the opposite direction by the geared motor 5. Under the pulling action of the rigid chain 21, the telescopic arm 1 is retracted and the filling product 200 is gradually pulled into the filling cylinder 100.
[0038] S5. When the product 200 enters the filling cylinder 100 and is in place, stop the reduction motor 5 and disconnect the support lug 18 from the U-shaped fork 61 by pulling out the pin.
[0039] S6. Drive the rigid chain 21 to continue moving in the opposite direction through the geared motor 5 until the telescopic arm 1 is retracted into place, and remove the connecting seat 6 from the filling product 200.
[0040] The filling process is completed through the above steps. The process of pushing the filled product 200 out of the filling cylinder 100 is the reverse of the filling process. The filling system provided by this invention is characterized by its ease of operation, high degree of standardization, high work efficiency, and safety and reliability.
[0041] The above embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Various modifications made by those skilled in the art based on the technical solutions of the present invention without departing from the design concept of the present invention should fall within the scope of protection defined by the claims of the present invention.
Claims
1. A long-stroke loading system based on a rigid chain drive, characterized in that, The system includes a telescopic arm (1) and a chain box (2). The telescopic arm (1) includes multiple arm sections (11) that are sequentially fitted and slidably engaged from front to back. The last arm section (11) is fixed to the upper side of the chain box (2). Support wheel sets (3) are respectively provided on the lower side of the first arm section (11) and a middle arm section (11). A drive box (4) is provided on the rear side of the chain box (2). The drive sprocket in the drive box (4) is connected to a geared motor (5) through a coupling. One end of the rigid chain (21) in the chain box (2) passes around the drive sprocket and extends from back to front into the telescopic arm (1) and connects to the rear end of the first arm section (11). Next; except for the first arm section (11), each of the remaining arm sections (11) has an upper support block (12) and a lower support block (13) fixed in the rear end cavity, forming a channel through which a rigid chain (21) passes, and the rigid chain (21) slides with the upper support block (12) and the lower support block (13) of each arm section (11); the support wheel assembly (3) includes a mounting frame (31) and two roller assemblies (32), the mounting frame (31) is fixed to the lower side of the receiving positioning limit frame (17) of the corresponding arm section (11), and the two roller assemblies are fixed to the lower side of the receiving positioning limit frame (17) of the corresponding arm section (11). The wheel assembly (32) is symmetrically distributed from left to right. The roller assembly (32) includes a wheel frame (321) and two rollers (322) spaced apart on the wheel frame (321) in the front-rear direction. The upper middle part of the wheel frame (321) is provided with a bolt (323) connected to the mounting frame (31). The wheel frame (321) is provided with guide rods (324) on the front and rear sides of the bolt (323), and the guide rods (324) slide with the guide holes on the mounting frame (31). There is an included angle between the two roller assemblies (32), and the vertex of the included angle is on the axis of the filling cylinder. In practical applications, the filling cylinder is first loaded with rollers. The filling cylinder and the filling product are arranged sequentially from back to front on the front side of the telescopic arm (1). The rigid chain (21) is driven by the geared motor (5) to extend out of the chain box (2). Under the pushing action of the rigid chain (21), the telescopic arm (1) extends from back to front and enters the filling cylinder. When the front end of the telescopic arm (1) contacts the filling product, the geared motor (5) stops and the telescopic arm (1) is connected to the filling product. Then, the rigid chain (21) is driven by the geared motor (5) to move in the opposite direction. Under the pulling action of the rigid chain (21), the telescopic arm (1) is retracted and the filling product is gradually pulled into the filling cylinder.
2. The long-stroke loading system based on rigid chain drive according to claim 1, characterized in that, Except for the first arm section (11), the front slider (14) is fixed at the four corners of the front end cavity of each of the other arm sections (11); except for the last arm section (11), the extension limit frame (15) that cooperates with the front slider (14) is fixed on the outer side of the rear end of each of the other arm sections (11), and the rear slider (16) is fixed at the four corners of the extension limit frame (15).
3. The long-stroke loading system based on rigid chain drive according to claim 2, characterized in that, A reinforcing frame is fixed to the outer front end of the last arm section (11); except for the last arm section (11), the outer front end of each of the other arm sections (11) is fixed with a receiving positioning limit frame (17) that cooperates with the front end of the next arm section (11).
4. The long-stroke loading system based on rigid chain drive according to claim 3, characterized in that, The front end of the first section arm (11) is fixed with a vertical support lug (18), and also includes a connecting seat (6) corresponding to the support lug (18) and detachably fixed to the rear end of the filling product. The connecting seat (6) is provided with a U-shaped fork (61) that cooperates with the support lug (18). The two side walls of the support lug (18) and the U-shaped fork (61) are respectively provided with pin holes.
5. The long-stroke loading system based on rigid chain drive according to claim 4, characterized in that, The telescopic arm (1) is equipped with a laser rangefinder for measuring the extension distance, and a load sensor (19) is fixed between the support lug (18) and the first arm section (11).
6. The long-stroke loading system based on rigid chain drive according to claim 5, characterized in that, It also includes control devices that are connected to the geared motor (5), the load sensor (19) and the laser rangefinder respectively.
7. A method of using the loading system of claim 6, characterized in that, Includes the following steps: S1. The filling cylinder (100) and the filling product (200) are arranged from back to front on the front side of the telescopic arm (1), and the connecting seat (6) is fixed at the rear end of the filling product (200). S2. Drive the rigid chain (21) through the geared motor (5) to extend out of the chain box (2). Under the pushing action of the rigid chain (21), the telescopic arm (1) extends from back to front and enters the filling cylinder (100). S3. When the lug (18) contacts the U-shaped fork (61), stop the deceleration motor (5) and use a pin to insert into the pin hole of the lug (18) and the U-shaped fork (61) to establish a connection between the two. S4. Drive the rigid chain (21) to move in the opposite direction by the geared motor (5). Under the pulling action of the rigid chain (21), the telescopic arm (1) is retracted and the filling product (200) is gradually pulled into the filling cylinder (100). S5. When the filling product (200) enters the filling cylinder (100) and is in place, stop the reduction motor (5) and disconnect the support lug (18) from the U-shaped fork (61) by pulling out the pin. S6. Drive the rigid chain (21) to continue moving in the opposite direction by the geared motor (5) until the telescopic arm (1) is retracted into place, and remove the connecting seat (6) from the filling product (200).