Heavy-duty quick locking device

Abstract

The utility model discloses a heavy -duty quick locking device, including positioning cover, T type lock bar is passed screw plug, spring and push rod in proper order from below and above, and screw plug is connected in the inner chamber of positioning cover, and T type lock bar can rotate with push rod synchronously, and push rod can be limited by positioning cover periphery after rotating a certain angle. The device is convenient to mount and dismount, and simple and convenient to operate.

Description

Technical Field

[0001] This utility model belongs to the field of tooling and fixture technology, and in particular relates to a heavy-duty quick-locking device. Background Technology

[0002] When loading and unloading goods, heavy-duty loading docks require the use of auxiliary equipment (such as rollers) to save labor. However, these auxiliary equipment need to be removed during the transportation of goods after loading and unloading. Since it is heavy-duty freight transport, frequent disassembly is also required, so the installation efficiency and anti-loosening effect of the equipment are relatively high. Utility Model Content

[0003] Utility Model Purpose

[0004] To meet the functional requirements of heavy-duty loading platforms, this utility model provides a heavy-duty quick-locking device.

[0005] Utility Model Technical Solution

[0006] A heavy-duty quick-locking device includes a positioning sleeve, a T-shaped locking rod that passes through a screw plug, a spring and a push rod from bottom to top, the screw plug being connected to the inner cavity of the positioning sleeve, and the T-shaped locking rod being able to rotate synchronously with the push rod; after the push rod is pressed down and rotated at a certain angle, it can be circumferentially limited by the positioning sleeve.

[0007] Preferably, the end of the push rod away from the screw plug extends out of the positioning sleeve, and a handwheel is provided on the T-shaped locking rod. The handwheel, the end of the push rod extending out of the positioning sleeve, and the T-shaped locking rod are fixed together.

[0008] Preferably, the cross-section of the upper inner cavity of the positioning sleeve is waist-shaped, and when the spring is in its natural state, the lower part of the push rod is located inside the waist-shaped cavity of the positioning sleeve, and the shape of the lower part of the push rod is compatible with the waist-shaped cavity of the positioning sleeve.

[0009] Preferably, the push rod has a boss that can be inserted into the corresponding groove on the positioning sleeve when the push rod is pressed down and rotated at a certain angle.

[0010] Preferably, the boss is located on the top surface of the waist-shaped structure of the push rod.

[0011] Preferably, the rotation angle is 90°.

[0012] Preferably, the handwheel, push rod, and T-shaped locking rod are fixed together by set screws.

[0013] Preferably, the lower part of the T-shaped locking bar has an enlarged end.

[0014] Preferably, the positioning sleeve is fixed to the mounting plate of the device that needs to be fixed, and the enlarged end of the T-shaped locking rod extends into the groove of the mounting plate.

[0015] Preferably, the screw plug is threaded into the inner cavity of the positioning sleeve.

[0016] The advantages of this utility model are: the device is easy to install and disassemble, and simple and convenient to operate; it has a good anti-loosening effect and can adapt to the use environment with large load and large vibration. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of a heavy-duty quick-locking device according to the present invention (initial installation position, unlocked state).

[0018] Figure 2 yes Figure 1 AA sectional view.

[0019] Figure 3 Exploded view of a heavy-duty quick-locking device according to this utility model.

[0020] Figure 4 This is a schematic diagram of the locked state of a heavy-duty quick-locking device according to this utility model.

[0021] Figure 5 This is a drawing of the positioning sleeve.

[0022] Figure 6 This is a diagram of the push rod's outline.

[0023] Figure 7 This is a diagram of the locking bar's outline.

[0024] Figure 8 This is a diagram of the screw plug's outline.

[0025] Figure 9 This is a diagram of the handwheel's outline.

[0026] In the diagram: 1. Positioning sleeve, 2. Push rod, 3. T-shaped locking rod, 4. Plug, 5. Handwheel, 6. Spring, 7. Washer, 8. Set screw, 1-1. Mounting hole, 1-2. Waist cavity, 1-3. Slotted groove, 2-2. T-shaped boss, 2-3. Slotted boss, 3-1. Hexagonal head, 3-2. T-shaped platform, 5-1. Hexagonal hole, 9. Mounting plate, 10. Fixing plate. Detailed Implementation

[0027] This utility model is achieved through the following technical solution.

[0028] A heavy-duty quick-locking device includes a positioning sleeve 1, a push rod 2, a T-shaped locking rod 3, a screw plug 4, a handwheel 5, a spring 6, a washer 7, and a set screw 8.

[0029] The positioning sleeve 1 has a push rod 2 and a spring 6 installed inside, and a screw plug 4 installed at the bottom. A T-shaped locking rod 3 passes through the bottom end of the screw plug 4. The hexagonal head 3-1 at the top of the T-shaped locking rod 3 passes through the hexagonal hole 2-1 at the top of the push rod 2 and the hexagonal hole 5-1 on the handwheel 5, and is then fixed with a set screw 8, making the handwheel 5, push rod 2, and T-shaped locking rod 3 a single unit. The push rod 2 and T-shaped locking rod 3 can move together with the handwheel 5. The upper part of the positioning sleeve 1 has a waist-shaped cavity 1-2 and a slot 1-3 perpendicular to its length on the top surface of the waist-shaped cavity 1-2. The push rod 2 has a T-shaped boss 2-2 that can mate with the waist-shaped cavity 1-2 and a slot 2-3 that can mate with the slot 1-3. The spring 6 is located between the push rod 2 and the screw plug 4 and is also located on the T-shaped locking rod 3. A washer 7 is placed between the spring 6 and the push rod 2.

[0030] Initial installation state: Under the action of spring 6, the waist-shaped boss 2-2 on push rod 2 and the waist-shaped cavity 1-2 of positioning sleeve 1 cooperate, so that handwheel 5 can only be pressed up and down axially and cannot be rotated.

[0031] Working state: Press the handwheel 5 to the limit position. Under the action of the spring 6, the push rod 2 and the T-shaped locking rod 3 move downward together with the handwheel 5 to the limit position. Then the handwheel 5 rotates 90°. Under the force of the spring 6, the protrusion 2-3 on the push rod 2 is exactly inserted into the slot 1-3 of the positioning sleeve 1. At the same time, the lower T-shaped platform 3-2 of the T-shaped locking rod 3 also rotates 90°, locking the mounting plate to the mounting plate 9. At the same time, the slot 1-3 on the positioning sleeve 1 and the protrusion 2-3 on the push rod 2 cooperate to prevent the T-shaped locking rod 3 from rotating and loosening.

[0032] Assembly of the device: Insert the push rod 2 into the positioning sleeve 1 through the waist-shaped boss 2-2 and the waist-shaped hole 1-2; then, insert the washer 7 and spring 6 in sequence, and connect the screw plug 4 to the lower end of the positioning sleeve 1 by thread; insert the T-shaped locking rod through the center hole of the screw plug, and mate the upper hexagonal head 3-1 with the hexagonal holes of the push rod 2 and handwheel 5 in turn, and secure it with the set screw 8. Thus, the assembly of a heavy-duty quick-locking device is completed.

[0033] Installation of the device: A heavy-duty quick-locking device is installed onto the mounting plate 9 of the device to be fixed through four mounting holes 1-1 at the lower end, such as... Figure 1 As shown.

[0034] Working process: Press handwheel 5 to its limit position, then rotate it 90° and release. T-shaped locking lever 3 extends and rotates to the working position to lock the device. Figure 3 As shown.

[0035] Disassembly of the device: Press the handwheel 5 to the limit position, rotate it 90° in the opposite direction and release it. Under the action of the spring 6, the T-shaped locking rod 3 retracts to the unlocked state.

[0036] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All equivalent transformations or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model. The technologies, shapes, and structures not described in detail in this utility model are all known technologies.

Claims

1. A heavy-duty quick locking device, characterized in that, The device includes a positioning sleeve (1), a T-shaped locking rod (3) which passes through a screw plug (4), a spring (6) and a push rod (2) from bottom to top. The screw plug (4) is connected to the inner cavity of the positioning sleeve (1). The T-shaped locking rod (3) can rotate synchronously with the push rod (2). After the push rod (2) is pressed down and rotated at a certain angle, it can be circumferentially limited by the positioning sleeve (1).

2. A heavy-duty quick locking device as claimed in claim 1, characterized in that The push rod (2) extends out of the positioning sleeve (1) at the end away from the screw plug (4). A handwheel (5) is set on the T-shaped locking rod (3). The handwheel (5), the push rod (2) extending out of the positioning sleeve (1), and the T-shaped locking rod (3) are fixed together.

3. The heavy-duty quick-locking device as described in claim 2, characterized in that, The upper inner cavity of the positioning sleeve (1) has a waist-shaped cross section. When the spring (6) is in its natural state, the lower part of the push rod (2) is located in the waist-shaped cavity of the positioning sleeve (1), and the shape of the lower part of the push rod (2) is compatible with the waist-shaped cavity of the positioning sleeve (1).

4. The heavy-duty quick-locking device as described in claim 3, characterized in that, The push rod (2) has a boss. When the push rod (2) is pressed down and rotated at a certain angle, the boss can be inserted into the corresponding groove on the positioning sleeve (1).

5. A heavy-duty quick-locking device as described in claim 4, characterized in that, The boss is located on the top surface of the waist-shaped structure of the push rod (2).

6. A heavy-duty quick-locking device as described in claim 4, characterized in that, The push rod (2) rotates at an angle of 90°.

7. A heavy-duty quick-locking device as described in claim 2, characterized in that, The handwheel (5), push rod (2), and T-shaped locking rod (3) are fixed together by set screws (8).

8. A heavy-duty quick-locking device as described in claim 2, characterized in that, The lower part of the T-shaped locking bar (3) has an enlarged end.

9. A heavy-duty quick-locking device as described in claim 8, characterized in that, The positioning sleeve (1) is fixed to the mounting plate of the device that needs to be fixed, and the enlarged end of the T-shaped locking rod (3) extends into the groove of the mounting plate.

10. A heavy-duty quick-locking device as described in any one of claims 1 to 9, characterized in that, The screw plug (4) is threaded into the inner cavity of the positioning sleeve (1).

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