Military folding heavy-load trundle applied to missile transportation frame

Abstract

The military folding heavy-load trundle applied to the missile transportation frame comprises a fixed seat and a rolling wheel, an installation shaft is arranged on the fixed seat, a movable seat capable of being folded and unfolded relative to the fixed seat with the installation shaft as the rotation center is installed on the installation shaft, and the rolling wheel is arranged on the movable seat and acts along with the movable seat; the fixed seat is provided with a folding locking assembly used for keeping the movable seat in a folding state and an unfolding locking assembly used for keeping the movable seat in an unfolding state. The movable seat can be folded and unfolded relative to the fixed seat by taking the mounting shaft as a rotating center, and when the movable seat is folded relative to the fixed seat, the rollers on the movable seat can be synchronously driven to be far away from the ground, so that the sliding risk caused by the fact that the rollers are in contact with the ground is eliminated, and the probability that the transportation frame and a missile collide with a container is reduced; and the fixing quality of the missile in the container is ensured.

Description

Technical Field

[0001] This utility model relates to the field of missile transport rack technology, specifically to military folding heavy-duty casters used on missile transport racks. Background Technology

[0002] Currently, large cannon missiles are mostly transported in special containers for long-distance transport. Due to the large size of the missiles, loading and unloading them is complicated. Therefore, they are usually transported in and out of the container by a transport rack equipped with rollers.

[0003] For example, a transfer vehicle with the function of a transport rack, as described in application number CN202222915935.5, includes a vehicle body. Lifting supports, consisting of lifting columns and supports, are respectively provided on the lower sides of at least the front and rear ends of the vehicle body. Two casters are also provided at the front and rear of the vehicle body. This technical solution allows the supports to support the ground after the lifting columns are lowered, releasing the casters and enabling the vehicle to function as a temporary storage rack or a transport rack fixed to a container. However, the casters in this solution are not foldable and always remain perpendicular to the ground. This requires the supports to have a large adjustment range to ensure the casters are completely off the ground. If the range is insufficient, the casters may re-contact the ground due to unevenness or vibration, potentially causing displacement of the transport rack. This could lead to collisions between the transport rack and the missile with the container, affecting the missile's secure position within the container. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides military folding heavy-duty casters for use on missile transport racks.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] Military folding heavy-duty casters for use on missile transport racks include a fixed base and rollers, characterized in that: the fixed base is provided with a mounting shaft, the mounting shaft is equipped with a movable base that can be folded and unfolded relative to the fixed base with the mounting shaft as the rotation center, and the rollers are arranged on the movable base and move with the movable base;

[0007] The fixed base is provided with a folding locking component for keeping the movable base in a folded state and an unfolding locking component for keeping the movable base in an unfolded state; the movable base is provided with a folding engagement part for engaging with the folding locking component after it is folded and an unfolding engagement part for engaging with the unfolding locking component after it is unfolded.

[0008] In this embodiment, the fixed base is provided with a folding mounting groove, the folding locking component is located in the folding mounting groove, and a folding unlocking hole is provided on one wall of the folding mounting groove for the operator to operate the folding locking component to fold and unlock the movable base. The folding unlocking hole penetrates one side of the fixed base.

[0009] In this embodiment, the folding locking assembly includes a folding lock and a folding spring. The folding lock is slidably guided to the fixed base. One end of the folding lock is an unlocking operation end that extends out of the folding mounting groove through the folding unlocking hole. The folding lock is provided with a folding locking hook. The two ends of the folding spring are respectively connected to the folding lock and the fixed base. The folding spring uses its elasticity to drive the folding lock to move and reset, and to hook the folding locking hook onto the folding mating part.

[0010] In this embodiment, the unlocking operation end is provided with an operation limiting part for limiting the unlocking operation end from extending beyond the length of the folding mounting slot.

[0011] In this embodiment, the folding lock is provided with a folding extension rod, and each folding extension rod is fitted with at least one folding spring.

[0012] In this embodiment, a folding insertion hole is provided on the other wall of the folding mounting groove, which penetrates the other side of the fixing seat, and one end of the folding extension rod extends out of the folding mounting groove through the folding insertion hole.

[0013] In this embodiment, the folding mating part is provided with a first folding drive surface for the movable seat to push the folding lock to move in the unlocking direction during the flipping and folding process;

[0014] Or / and, the folding locking hook is provided with a second folding drive surface for the movable seat to be pushed by the movable seat during the flipping folding process, so that the folding lock moves in the unlocking direction.

[0015] In this embodiment, the unfolding locking assembly includes an unfolding lock and an unfolding spring. The unfolding lock is rotatably mounted on a fixed base using an unfolding shaft. The unfolding lock is provided with an unfolding locking hook and an unfolding wrench. The two ends of the unfolding spring are respectively connected to the unfolding lock and the fixed base. The unfolding spring uses its elastic force to rotate and reset the unfolding lock and hook the unfolding locking hook onto the unfolding mating part.

[0016] In this embodiment, the unfolding mating part is provided with a first unfolding driving surface for the movable seat to push the unfolding lock to flip in the unlocking direction during the unfolding process;

[0017] Or / and, the unfolding locking hook is provided with a second unfolding drive surface for the movable seat to be pushed by the movable seat during the unfolding process, so that the unfolding lock is flipped in the unlocking direction.

[0018] In this embodiment, a rotatable wheel frame is installed on the movable seat, and the roller is mounted on the wheel frame using a wheel axle.

[0019] The beneficial effects of this utility model are as follows: The movable seat of this utility model can be folded and unfolded relative to the fixed seat with the mounting shaft as the rotation center. When the movable seat is folded relative to the fixed seat, it can simultaneously drive the rollers on the movable seat away from the ground, thereby eliminating the risk of slippage caused by the rollers touching the ground, thus reducing the probability of collision between the transport rack and the missile and the container, and ensuring the fixed quality of the missile inside the container. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0021] Figure 1 Illustration of the unfolding of military folding heavy-duty casters Figure 1 ;

[0022] Figure 2 Illustration of the unfolding of military folding heavy-duty casters Figure 2 ;

[0023] Figure 3 This is a schematic diagram of the installation of the folding locking assembly;

[0024] Figure 4 A schematic diagram showing the installation of the locking component;

[0025] Figure 5 This is a folding diagram for military-grade heavy-duty folding casters.

[0026] Figure 6 This is a schematic diagram showing the folding locking assembly engaging with the folding mating part. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0028] It should be noted that if any directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial, etc.) is involved in the embodiments of this utility model, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0029] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0030] Reference Figure 1-6 Military folding heavy-duty casters used on missile transport racks include a fixed base 1 and rollers 2. The fixed base 1 is used to connect with the body of the transport rack, and the fixed base 1 is provided with a fixing through hole for fixing to the transport rack body with bolts.

[0031] Furthermore, the fixed base 1 is provided with a mounting shaft 3, and a movable base 4 that can be folded and unfolded relative to the fixed base 1 with the mounting shaft 3 as the rotation center is mounted on the mounting shaft 3. The mounting shaft 3 is a mounting bolt that is inserted and installed on the fixed base 1 and the movable base 4. The roller 2 is set on the movable base 4 and moves with the movable base 4, so that the roller 2 can be folded and unfolded.

[0032] Furthermore, the fixed base 1 is provided with a folding locking component 5 for keeping the movable base 4 in a folded state and an unfolding locking component 6 for keeping the movable base 4 in an unfolded state; the movable base 4 is provided with a folding engagement part 41 for engaging with the folding locking component 5 after it is folded and an unfolding engagement part 42 for engaging with the unfolding locking component 6 after it is unfolded, thereby ensuring the stability of the roller 2 in the folded and unfolded states.

[0033] The movable seat 4 of this utility model can be folded and unfolded relative to the fixed seat 1 with the mounting shaft 3 as the rotation center. When the movable seat 4 is folded relative to the fixed seat 1, it can simultaneously drive the roller 2 on the movable seat 4 away from the ground, thereby eliminating the risk of slippage caused by the roller 2 touching the ground, thus reducing the probability of collision between the transport rack and the missile and the container, and ensuring the fixed quality of the missile inside the container.

[0034] In a preferred embodiment, the bottom of the fixed seat 1 is provided with an unfolding limiting surface, and the top surface of the movable seat 4 in the unfolded state is an unfolding mating surface that abuts against the unfolding limiting surface. Both the unfolding limiting surface and the unfolding mating surface are planes, so that after the movable seat 4 is unfolded, the fixed seat 1 can be stably pressed on the movable seat 4, ensuring that the movable seat 4 can stably support the fixed seat 1 in the unfolded state.

[0035] In a preferred embodiment, the fixed base 1 is provided with a folding mounting groove 11, the folding locking component 5 is located in the folding mounting groove 11, and a folding unlocking hole is provided on one wall of the folding mounting groove 11 for the operator to operate the folding locking component 5 to fold and unlock the movable base 4. The folding unlocking hole penetrates one side of the fixed base 1.

[0036] Furthermore, the folding locking assembly 5 includes a folding lock 51 and a folding spring 52. The folding lock 51 is slidably guided to the fixed base 1. One end of the folding lock 51 is an unlocking operation end 511 that extends out of the folding mounting groove 11 through a folding unlocking hole. When the operator presses the unlocking operation end 511, the folding locking assembly 5 can be unlocked. The cross-sectional shape of the unlocking operation end 511 and the folding unlocking hole is polygonal, preferably quadrilateral, thereby enabling a slidable guide connection between the folding lock 51 and the fixed base 1. In addition, the unlocking operation end 511 is provided with an operation limiting part 5111 for limiting the length of the unlocking operation end 511 extending out of the folding mounting groove 11.

[0037] Furthermore, the folding lock 51 is provided with folding locking hooks 512. There are at least two folding locking hooks 512, which are arranged at intervals along the sliding direction of the folding lock 51. Each folding locking hook 512 is matched with a folding mating part 41, thereby enhancing the mass of the locking movable seat 4 when it is in the folded state. At the same time, the ends of the folding mating parts 41 away from the movable seat 4 are connected by folding reinforcement parts 43 in one piece, thereby improving the structural stability of the folding mating parts 41.

[0038] Furthermore, the two ends of the folding spring 52 are respectively connected to the folding lock 51 and the fixed base 1. The folding spring 52 uses its elasticity to move and reset the folding lock 51, causing the folding locking hook 512 to hook onto the folding mating part 41, thereby locking the movable base 4 into a folded state. Specifically, the folding lock 51 is provided with two folding extension rods 513, and each folding extension rod 513 is fitted with at least one folding spring 52. In this way, the elasticity of multiple folding springs 52 is used to ensure the locking quality of the folding locking assembly 5. In addition, the other wall of the folding mounting groove 11 is provided with a folding insertion hole that penetrates the other side of the fixed base 1. One end of the folding extension rod 513 extends out of the folding mounting groove 11 through the folding insertion hole, thereby strengthening the quality of the sliding guide connection between the folding lock 51 and the fixed base 1.

[0039] Furthermore, the folding engagement part 41 is provided with a first folding drive surface 411 for the movable seat 4 to push the folding lock 51 to move in the unlocking direction during the flipping and folding process, and the folding locking hook 512 is provided with a second folding drive surface 514 for the movable seat 4 to be pushed by the movable seat 4 during the flipping and folding process to move the folding lock 51 in the unlocking direction; wherein, the first folding drive surface 411 is a folding inclined surface, and the second folding drive surface 514 is a folding arc surface. As the movable seat 4 flips in the folding direction, the first folding drive surface 411 presses against the second folding drive surface 514. As the movable seat 4 continues to rotate in the folding direction, the movable seat 4 uses the first folding drive surface 411 to press and push the folding lock 51 to move in the unlocking direction. At this time, the folding spring 52 is compressed. After the movable seat 4 flips in the folding direction and the hook of the folding locking hook 512 separates from the folding engagement part 41, the folding spring 52 unfolds and drives the folding lock 51 to reset, and the hook of the folding locking hook 512 hooks onto the folding engagement part 41, thereby locking the movable seat 4 in the folded state.

[0040] Of course, it is not limited to the above structure. In other embodiments, only the first folding drive surface 411 or the second folding drive surface 514 can be provided to achieve the same purpose. In addition, during the process of the movable seat 4 flipping in the folding direction, the operator can also manually press the folding lock 51 to make the hook of the folding locking hook 512 misalign with the folding mating part 41 and compress the folding spring 52. Then, after the movable seat 4 is flipped into place, the folding lock 51 is released, allowing the folding spring 52 to drive the folding lock 51 to reset and make the hook of the folding locking hook 512 hook onto the folding mating part 41 to lock the movable seat 4 in the folded state.

[0041] In a preferred embodiment, the fixed base 1 is provided with an unfolding mounting groove 12, and the unfolding locking assembly 6 is located in the unfolding mounting groove 12. The unfolding locking assembly 6 includes an unfolding lock 61 and an unfolding spring 62. The unfolding lock 61 is rotatably mounted on the fixed base 1 using an unfolding shaft 63, which is an unfolding bolt that passes through the fixed base 1 and the unfolding lock 61. The unfolding lock 61 is provided with an unfolding locking hook 611 and an unfolding wrench 612. The two ends of the unfolding spring 62 are respectively connected to the unfolding lock 61 and the fixed base 1. The unfolding spring 62 uses its elasticity to rotate and reset the unfolding lock 61 and hook the unfolding locking hook 611 onto the unfolding mating part 42, thereby locking the unfolded state of the movable base 4. When the operator turns the unfolding wrench 612, the unfolding lock 61 can be rotated in the unlocking direction, causing the unfolding locking hook 611 to disengage from the unfolding mating part 42, thus unlocking the device.

[0042] Furthermore, the unfolding spring 62 is located above the unfolding shaft 63, a first slot is provided on one wall of the unfolding mounting groove 12, and a second slot is provided on the unfolding locking member 61. The two ends of the unfolding spring 62 are respectively inserted into the first slot and the second slot, thereby realizing the positioning and installation of the unfolding spring 62.

[0043] Furthermore, the unfolding mating part 42 is provided with a first unfolding driving surface 421 for the movable seat 4 to push the unfolding lock 61 to flip in the unlocking direction during the unfolding process, and the unfolding locking hook 611 is provided with a second unfolding driving surface 613 for the movable seat 4 to be pushed by the movable seat 4 to flip the unfolding lock 61 in the unlocking direction during the unfolding process. Both the first unfolding driving surface 421 and the second unfolding driving surface 613 are unfolding inclined surfaces.

[0044] As the movable seat 4 flips in the unfolding direction, the first unfolding drive surface 421 presses against the second unfolding drive surface 613, and presses against the second unfolding drive surface 613 of the unfolding lock 61, causing the unfolding lock 61 to flip in the unlocking direction. At this time, the unfolding spring 62 is compressed. After the movable seat 4 rotates to the unfolding position and the first unfolding drive surface 421 completely disengages from the unfolding mating part 42, the unfolding spring 62 unfolds, driving the unfolding lock 61 to reset. The hook of the unfolding locking hook 611 hooks onto the unfolding mating part 42, thereby locking the movable seat 4.

[0045] Of course, it is not limited to the above structure. In other embodiments, only the first unfolding drive surface 421 or the second unfolding drive surface 613 can be provided to achieve the same purpose. In addition, during the process of the movable seat 4 flipping in the unfolding direction, the operator can also manually swing the unfolding lock 61 to flip and compress the unfolding spring 62. Then, after the movable seat 4 is flipped into place, the unfolding lock 61 is released, allowing the unfolding spring 62 to drive the unfolding lock 61 to reset, so that the hook of the unfolding locking hook 611 hooks onto the unfolding mating part 42, thereby locking the movable seat 4 in the unfolded state.

[0046] In a preferred embodiment, a rotatable wheel frame 7 is mounted on the movable seat 4, and the roller 2 is mounted on the wheel frame 7 using a wheel axle 21. Specifically, the wheel axle 21 is a wheel bolt inserted into the roller 2 and the wheel frame 7. A mating shaft 44 protrudes from the movable seat 4, and a wheel nut 45 is threaded onto the mating shaft 44 after passing through a frame hole on the wheel frame 7. A pin 46 is inserted through the mating shaft 44 and the wheel nut 45 to prevent the wheel nut 45 from disengaging from the mating shaft 44. A first bearing 47 is provided between the wheel nut 45 and the wheel frame 7, and a second bearing 48 is provided between the movable seat 4 and the wheel frame 7 to facilitate relative rotation between them. The first bearing 47 and the second bearing 48 can be thrust ball bearings.

[0047] The above description is only a preferred embodiment of the present utility model. Any technical solution that achieves the purpose of the present utility model by essentially the same means shall fall within the protection scope of the present utility model.

Claims

1. A military folding heavy-duty caster for use on a missile transport rack, comprising a fixed base (1) and rollers (2), characterized in that: The fixed seat (1) is provided with a mounting shaft (3), and a movable seat (4) that can be folded and unfolded relative to the fixed seat (1) with the mounting shaft (3) as the rotation center is mounted on the mounting shaft (3). The roller (2) is set on the movable seat (4) and moves with the movable seat (4). The fixed seat (1) is provided with a folding locking component (5) for keeping the movable seat (4) in a folded state and an unfolding locking component (6) for keeping the movable seat (4) in an unfolded state; the movable seat (4) is provided with a folding mating part (41) for engaging with the folding locking component (5) after it is folded and an unfolding mating part (42) for engaging with the unfolding locking component (6) after it is unfolded.

2. The military folding heavy-duty caster for use on a missile transport rack according to claim 1, characterized in that: The fixed base (1) is provided with a folding mounting groove (11), and the folding locking component (5) is located in the folding mounting groove (11). One wall of the folding mounting groove (11) is provided with a folding unlocking hole for the operator to operate the folding locking component (5) to fold and unlock the movable seat (4). The folding unlocking hole passes through one side of the fixed base (1).

3. The military folding heavy-duty caster for use on a missile transport rack according to claim 1 or 2, characterized in that: The folding locking assembly (5) includes a folding lock (51) and a folding spring (52). The folding lock (51) is slidably guided to the fixed base (1). One end of the folding lock (51) is an unlocking operation end (511) that extends out of the folding mounting groove (11) through the folding unlocking hole. The folding lock (51) is provided with a folding locking hook (512). The two ends of the folding spring (52) are respectively connected to the folding lock (51) and the fixed base (1). The folding spring (52) uses its elastic force to move and reset the folding lock (51) and hook the folding locking hook (512) onto the folding mating part (41).

4. The military folding heavy-duty caster for use on a missile transport rack according to claim 3, characterized in that: The unlocking operation end (511) is provided with an operation limiting part (5111) for limiting the length of the unlocking operation end (511) extending out of the folding mounting slot (11).

5. The military folding heavy-duty caster for use on a missile transport rack according to claim 3, characterized in that: The folding lock (51) is provided with a folding extension rod (513), and each folding extension rod (513) is fitted with at least one folding spring (52).

6. The military folding heavy-duty caster for use on a missile transport rack according to claim 5, characterized in that: The other wall of the folding mounting groove (11) is provided with a folding insertion hole that passes through the other side of the fixing seat (1), and one end of the folding extension rod (513) extends out of the folding mounting groove (11) through the folding insertion hole.

7. The military folding heavy-duty caster for use on a missile transport rack according to claim 3, characterized in that: The folding mating part (41) is provided with a first folding drive surface (411) for the movable seat (4) to push the folding lock (51) to move in the unlocking direction during the flipping and folding process. Or / and, the folding locking hook (512) is provided with a second folding drive surface (514) for the movable seat (4) to be pushed by the movable seat (4) during the flipping folding process so that the folding lock (51) moves in the unlocking direction.

8. The military folding heavy-duty caster for use on a missile transport rack according to claim 1, characterized in that: The unfolding locking assembly (6) includes an unfolding lock (61) and an unfolding spring (62). The unfolding lock (61) is rotatably mounted on the fixed base (1) via an unfolding shaft (63). The unfolding lock (61) is provided with an unfolding locking hook (611) and an unfolding wrench (612). The two ends of the unfolding spring (62) are respectively connected to the unfolding lock (61) and the fixed base (1). The unfolding spring (62) uses its elastic force to rotate and reset the unfolding lock (61) and hook the unfolding locking hook (611) onto the unfolding mating part (42).

9. The military folding heavy-duty caster for use on a missile transport rack according to claim 8, characterized in that: The unfolding mating part (42) is provided with a first unfolding driving surface (421) for the movable seat (4) to push the unfolding lock (61) to flip in the unlocking direction during the unfolding process. Or / and, the unfolding locking hook (611) is provided with a second unfolding driving surface (613) for the movable seat (4) to be pushed by the movable seat (4) during the unfolding process so that the unfolding lock (61) is flipped in the unlocking direction.

10. The military folding heavy-duty caster for use on a missile transport rack according to claim 1, characterized in that: The movable seat (4) is equipped with a rotatable wheel frame (7), and the roller (2) is mounted on the wheel frame (7) by means of axle (21).

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