Movable doorsill device for storeroom

By designing a movable threshold device with switchable posture, the safety risks and environmental pollution problems in the event of chemical warehouse leaks were solved, enabling flexible area management of the warehouse and effective prevention of leaks.

CN224134482UActive Publication Date: 2026-04-17蒙牛乳业(唐山)有限责任公司 +1
View PDF 0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
蒙牛乳业(唐山)有限责任公司
Filing Date
2025-04-28
Publication Date
2026-04-17

AI Technical Summary

Technical Problem

In the event of a leak in an existing chemical warehouse, the standard threshold increases the risk of forklift transport and cannot effectively prevent the leaked material from leaving the warehouse, leading to environmental pollution and safety hazards.

Method used

Design an active threshold device, including a base, a threshold mechanism, and a drive assembly. The threshold can switch between horizontal and vertical orientations and has a sealing structure and a liquid collection system for regional isolation and leakage collection in a warehouse.

Benefits of technology

It enables flexible area management of the warehouse, reduces the risks of forklift transportation, effectively prevents leakage, and improves safety and environmental protection capabilities.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224134482U_ABST
    Figure CN224134482U_ABST
Patent Text Reader

Abstract

The utility model relates to the technical field of doorsills, and provides a movable doorsill device for a storehouse, which comprises a base and a doorsill mechanism, the top surface of the base is provided with a storage groove and a barrier wall, and at least part of the barrier wall extends to the notch of the storage groove; the threshold mechanism is installed in the storage groove and comprises a threshold and a driving assembly, the threshold is rotationally arranged in the storage groove, the driving assembly is in transmission connection with the threshold, and the threshold is switched between the horizontal posture and the vertical posture under driving of the driving assembly. When the warehouse needs to be kept in an open state to facilitate free entering and exiting of goods, the driving assembly drives the threshold to rotate to a horizontal posture, the threshold is contained in the containing groove and flush with the top face of the base at the moment, the ground of the warehouse is flat, and passing is unobstructed. When the storeroom needs to be subjected to area division or safe isolation, the driving assembly drives the threshold to rotate to the vertical posture, the threshold abuts against the barrier wall, the base is divided into two parts isolated from each other, and liquid in the storeroom can be effectively prevented from flowing out.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of threshold technology, and in particular to a movable threshold device for warehouses. Background Technology

[0002] In the field of chemical storage, leak prevention and operational safety in warehouses are of paramount importance. Currently, some chemical warehouses have design flaws, lacking thresholds or dikes. In the event of a chemical leak, the spilled material can flow unimpeded outdoors, polluting surrounding soil and water bodies. If an open flame is present at the leak site, it could also trigger a violent explosion and fire.

[0003] To address the issue of chemical spills, some warehouses have installed standard thresholds. However, this measure has introduced new problems. Due to frequent forklift operations within the warehouses, the height difference and hard material of the standard thresholds cause forklifts to bump when passing over them, increasing the risk of forklifts tipping over when handling chemicals. If a forklift tipps over, the containers of chemicals may rupture, causing a large-scale leak and rapidly expanding the danger zone. Utility Model Content

[0004] This invention provides a movable threshold device for warehouses, which solves the problem that existing warehouse leakage prevention measures are insufficient to meet daily usage needs.

[0005] This utility model provides a movable threshold device for a warehouse, comprising:

[0006] A base, the top surface of which is provided with a storage groove and a barrier wall, at least part of which extends to the opening of the storage groove;

[0007] A threshold mechanism is installed in the storage slot. The threshold mechanism includes a threshold and a drive assembly. The threshold is rotatably disposed in the storage slot. The drive assembly is pulsatorically connected to the threshold. Under the drive of the drive assembly, the threshold switches between a horizontal posture and a vertical posture. In the horizontal posture, the top surface of the threshold is flush with the top surface of the base. In the vertical posture, the threshold abuts against the barrier wall, so that the base is divided into a first part and a second part that are isolated from each other.

[0008] According to the present invention, a movable threshold device for a warehouse is provided, wherein the barrier wall is provided with a first contact surface, and in the vertical position, both the first contact surface and the groove wall of the storage groove abut against the top surface of the threshold.

[0009] According to the present invention, a movable threshold device for a warehouse is provided, which further includes a sealing element. The first contact surface is provided with a first mounting groove, and the groove wall of the storage groove is provided with a second mounting groove. The first mounting groove and the second mounting groove are connected. The sealing element is disposed in the first mounting groove and the second mounting groove. In the vertical position, the sealing element is sealed to the top surface of the threshold.

[0010] According to the present invention, a movable threshold device for a warehouse is provided. The threshold includes a base and a protrusion disposed on the base. A second contact surface is formed between the base and the protrusion along the edge of the threshold. In the vertical position, the first contact surface and the groove wall of the storage groove abut against the second contact surface. The protrusion is located above the top surface of the base and is sandwiched between two opposing barrier walls.

[0011] According to the present invention, a movable threshold device for a warehouse is provided, which further includes an image acquisition device, the image acquisition device being installed in the first part and electrically connected to the driving component.

[0012] According to the present invention, a movable threshold device for a warehouse is provided, wherein the driving component includes a linear telescopic member, one end of which is hinged to the bottom surface of the threshold, and the other end of which is hinged to the bottom of the storage groove.

[0013] According to the present invention, a movable threshold device for a warehouse is provided, wherein the storage groove includes a first groove and a second groove disposed at the bottom of the first groove, the first groove is adapted to the threshold, the threshold is rotatably disposed in the first groove, and the driving component is installed in the second groove.

[0014] According to the present invention, a movable threshold device for a warehouse is provided, wherein a liquid collection tank is provided in the second part of the base, and a guide channel communicating with the liquid collection tank is also provided in the second part of the base.

[0015] According to the present invention, a movable threshold device for a warehouse is provided, wherein the bottom of the storage tank is provided with a liquid collection port, and the liquid collection port is in fluid communication with the liquid collection tank through a connecting pipe, so that the liquid entering the liquid collection port flows into the liquid collection tank.

[0016] According to the present invention, a movable threshold device for a warehouse is provided, which further includes a liquid level sensor and an alarm. The liquid level sensor is disposed in the liquid collection tank, and the alarm is installed in the first part. The liquid level sensor and the alarm are electrically connected.

[0017] The movable threshold device for warehouses provided by this utility model allows the threshold to rotate to a horizontal position when the warehouse needs to remain open for easy access of goods. At this point, the threshold is retracted into a storage slot, flush with the top surface of the base, resulting in a flat warehouse floor and unobstructed passage. When the warehouse needs to be divided into zones or for security isolation, the drive component rotates the threshold to a vertical position, causing it to abut against a barrier wall and dividing the base into two isolated parts, effectively preventing liquid from flowing out of the warehouse. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the movable threshold device for warehouses provided by this utility model.

[0020] Figure 2 This is a top view of the movable threshold device for warehouses provided by this utility model.

[0021] Figure 3 This is one of the cross-sectional views of the movable threshold device for warehouses provided by this utility model.

[0022] Figure 4 This is the second sectional view of the movable threshold device for warehouses provided by this utility model.

[0023] Figure label:

[0024] 1. Base; 11. Storage tank; 111. First tank; 112. Second tank; 12. Barrier wall; 13. First part; 14. Second part; 2. Threshold mechanism; 21. Threshold; 211. Base; 212. Protrusion; 22. Drive assembly; 3. Seal; 4. Liquid collection tank; 5. Liquid collection port; 6. Guide channel; 7. Liquid level sensor; 8. Image acquisition device; 9. Alarm; 10. Bracket. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] like Figure 1 As shown, the movable threshold device for a warehouse according to an embodiment of the present invention includes: a base 1 and a threshold mechanism 2. The top surface of the base 1 is provided with a storage groove 11 and a barrier wall 12, at least part of the barrier wall 12 extending to the opening of the storage groove 11; the threshold mechanism 2 is installed in the storage groove 11, and the threshold mechanism 2 includes a threshold 21 and a drive assembly 22. The threshold 21 is rotatably disposed in the storage groove 11, and the drive assembly 22 is connected to the threshold 21 in a transmission manner. Under the drive of the drive assembly 22, the threshold 21 switches between a horizontal posture and a vertical posture. In the horizontal posture, the top surface of the threshold 21 is flush with the top surface of the base 1. In the vertical posture, the threshold 21 abuts against the barrier wall 12, so that the base 1 is divided into a first part 13 and a second part 14 that are isolated from each other.

[0027] Specifically, the storage slot 11 is located on the top surface of the base 1, providing storage space for the threshold mechanism 2. When the threshold 21 is in a non-working state (horizontal), it can be stored within the slot, ensuring the flatness of the top surface of the base 1 and not affecting the normal passage of personnel and goods. For example, when goods frequently enter and exit the warehouse, the threshold 21, stored in the storage slot 11, can avoid obstructing forklifts and other handling equipment. At least a portion of the partition wall 12 extends to the opening of the storage slot 11. The main function of the partition wall 12 is to work with the threshold 21 when it is in a vertical position, dividing the base 1 into a first part 13 and a second part 14 that are mutually isolated. This facilitates regional management of the warehouse, such as dividing the warehouse into different storage areas, security areas, etc., enhancing the flexibility and security of warehouse management. For example, when certain areas within the warehouse require special protection (such as storing hazardous materials), these areas can be isolated from other areas of the warehouse through the threshold 21 and the partition wall 12.

[0028] The threshold 21 is rotatably mounted within the storage slot 11, allowing it to flexibly switch between horizontal and vertical positions. In the horizontal position, the top surface of the threshold 21 is flush with the top surface of the base 1, keeping the warehouse floor flat and facilitating free access for personnel and vehicles without obstruction. In the vertical position, the threshold 21 abuts against the partition wall 12, working together to create a barrier and divide the warehouse area. The drive assembly 22 is the power source for switching the threshold 21's position. The drive assembly 22 can employ various driving methods, such as electric or hydraulic drive. The drive assembly 22 makes the threshold 21's position switching more convenient and efficient, eliminating the need for manual operation and improving the automation level of warehouse management.

[0029] In practical applications, when the warehouse needs to remain open to facilitate the free entry and exit of goods, the drive component 22 drives the threshold 21 to rotate to a horizontal position. At this time, the threshold 21 is stored in the storage slot 11, flush with the top surface of the base 1, making the warehouse floor flat and allowing unobstructed passage. When the warehouse needs to be divided into areas or for security isolation, the drive component 22 drives the threshold 21 to rotate to a vertical position. The threshold 21 abuts against the barrier wall 12, dividing the base 1 into two isolated parts, effectively preventing liquid from flowing out of the warehouse.

[0030] In an optional embodiment, the barrier wall 12 is provided with a first contact surface, and in a vertical position, both the first contact surface and the wall of the storage groove 11 abut against the top surface of the threshold 21. In this way, the interior area of ​​the warehouse can be effectively isolated by the threshold 21, effectively preventing the leakage of hazardous materials or accidents from affecting other areas.

[0031] In optional embodiments, such as Figure 1 , Figure 2 and Figure 4 As shown, the movable threshold device for the warehouse also includes a sealing element 3. A first mounting groove is provided on the first contact surface, and a second mounting groove is provided on the groove wall of the storage groove 11. The first mounting groove and the second mounting groove are connected. The sealing element 3 is disposed in the first mounting groove and the second mounting groove. In a vertical position, the sealing element 3 is sealed to the top surface of the threshold 21.

[0032] It should be noted that the seal 3 is typically made of a material with good elasticity and wear resistance, such as rubber, which can maintain stable sealing performance during long-term use. The seal 3 can be a strip structure adapted to the first and second mounting grooves, and its cross-section can be rectangular, semi-circular, etc. The specific shape depends on the design of the mounting groove and is not specifically limited here.

[0033] The first mounting groove is formed on the first contact surface of the barrier wall 12, and the second mounting groove is set on the groove wall of the receiving groove 11 and connected to the first mounting groove to form a continuous installation space for the seal 3. The dimensions of the second mounting groove are consistent with those of the first mounting groove to ensure that the seal 3 can be evenly stressed in the two mounting grooves and achieve good sealing performance.

[0034] In practical applications, when the threshold 21 rotates to a vertical position under the drive of the drive assembly 22, the top surface of the threshold 21 comes into contact with the seal 3 located in the first and second mounting slots. Because the seal 3 has a certain degree of elasticity, under the pressure of the top surface of the threshold 21, the seal 3 undergoes elastic deformation, tightly fitting between the top surface of the threshold 21 and the first contact surface and the wall of the storage slot 11, forming a sealed interface. This sealed interface effectively achieves sealed isolation between different areas of the warehouse.

[0035] In optional embodiments, such as Figure 1 and Figure 2 As shown, to further increase the contact area between the threshold 21 and the barrier wall 12 and improve the overall sealing performance, the threshold 21 includes a base 211 and a protrusion 212 disposed on the base 211. A second contact surface is formed between the base 211 and the protrusion 212 along the edge of the threshold 21. In a vertical position, the first contact surface and the groove wall of the receiving groove 11 abut against the second contact surface. The protrusion 212 is located above the top surface of the base 1 and is sandwiched between the two opposing barrier walls 12. That is, in a vertical position, the protrusion 212 is sandwiched within the area enclosed by the base 1 and the two barrier walls 12.

[0036] In optional embodiments, such as Figure 1 As shown, the movable threshold device for the warehouse also includes an image acquisition unit 8, which is installed in the first part 13 and is electrically connected to the drive assembly 22.

[0037] It should be noted that the image acquisition device 8 is installed in the first part 13. It can be a high-definition camera with wide-angle shooting function, and it is installed at a suitable height (such as 2 to 3 meters above the ground) and angle (such as tilted at 30 to 45 degrees downwards for shooting).

[0038] Understandably, when the image information acquired by the image acquisition device 8 meets specific triggering conditions, it will send a control signal to the drive component 22. For example, when a vehicle with a specific marking is detected approaching in the warehouse area of ​​the first section 13, the image acquisition device 8 determines that a goods handling operation may be required. At this time, it sends a signal to the drive component 22. After receiving the control signal sent by the image acquisition device 8, the drive component 22 drives the threshold 21 to perform corresponding actions according to the signal instructions. For example, it drives the threshold 21 to rotate to a horizontal position to facilitate vehicle entry.

[0039] In optional embodiments, such as Figure 1 and Figure 3 As shown, the drive assembly 22 includes a linear telescopic member, one end of which is hinged to the bottom surface of the sill 21, and the other end of which is hinged to the bottom of the storage groove 11. For example, a first support is provided on the bottom surface of the sill 21, and a second support is provided on the bottom of the storage groove 11. One end of the linear telescopic member is hinged to the first support, and the other end of the linear telescopic member is hinged to the second support.

[0040] In this embodiment, the linear telescopic component is an electric cylinder, such as an electric telescopic rod, the telescopic end of which is hinged to the first support. Of course, in other embodiments, the linear telescopic component can also employ other structures capable of linear telescopic movement, such as pneumatic cylinders or hydraulic cylinders. Furthermore, the number of linear telescopic components can be two.

[0041] In optional embodiments, such as Figure 1 and Figure 3 As shown, to facilitate the installation of the drive assembly 22, the receiving slot 11 includes a first slot 111 and a second slot 112 disposed at the bottom of the first slot 111. The first slot 111 is adapted to the threshold 21, with the threshold 21 rotatably disposed within the first slot 111, and the drive assembly 22 installed within the second slot 112. That is, the size of the second slot 112 is smaller than the size of the first slot 111. In this vertical position, the wall of the first slot 111 abuts against the top surface of the threshold 21. Correspondingly, the second mounting slot is disposed on the wall of the first slot 111.

[0042] In optional embodiments, such as Figure 2 and Figure 4 As shown, the base 1 is provided with a liquid collection tank 4 in the second part 14, and the base 1 is also provided with a guide channel 6 in the second part 14 that communicates with the liquid collection tank 4.

[0043] It should be noted that the liquid collection tank 4 can quickly collect the liquid, preventing it from flowing erratically indoors and causing damage to the ground and surrounding facilities. In addition, the diversion channel 6 directs the leaked liquid to the liquid collection tank 4, preventing disorderly flow, preventing leakage and spread, and facilitating centralized treatment.

[0044] In optional embodiments, such as Figure 1 , Figure 2 and Figure 4 As shown, the bottom of the collection tank 11 is provided with a liquid collection port 5, which is in fluid communication with the collection tank 4 through a connecting pipe, so that the liquid entering the liquid collection port 5 flows into the collection tank 4.

[0045] Specifically, the bottom of the first tank 111 is provided with a liquid collection port 5, which is in fluid communication with the liquid collection tank 4 through a connecting pipe, so that the liquid entering the liquid collection port 5 flows into the liquid collection tank 4. In addition, the bottom of the first tank 111 is provided with a drainage groove corresponding to the sealing element 3, and the drainage groove is connected to the liquid collection port 5.

[0046] Thus, in the event of a leak, especially a minor leak, the leaked liquid can flow into the collection port 5 through a small external drainage channel. This prevents the leaked liquid from flowing freely outside and causing environmental pollution or other hazards, and serves to initially collect and guide the leaked liquid, facilitating subsequent centralized treatment. It also helps to detect leaks in a timely manner and reduce their adverse effects.

[0047] In addition, the connecting pipe can be made of polytetrafluoroethylene (PTFE), which is mainly used to guide and transport liquids. When the external liquid collection port 5 collects leaked liquid, the connecting pipe, with its excellent chemical stability, corrosion resistance and low coefficient of friction, can smoothly guide the liquid in the liquid collection port 5 to the internal liquid collection tank 4, ensuring that the liquid flows along the set path. This prevents the liquid from overflowing in the liquid collection port 5, causing the liquid to flow everywhere and causing pollution, safety hazards and other problems, thus ensuring the normal operation of the entire device and the cleanliness of the environment.

[0048] In addition, a stainless steel one-way valve is installed inside the connecting pipe, allowing the liquid collected at the external collection port 5 to flow through and into the collection tank 4. Utilizing its unique structure and principle, it allows only unidirectional liquid flow, from the collection port 5 to the collection tank 4. Simultaneously, it effectively prevents backflow of liquid in the collection tank 4, preventing liquid in the collection tank 4 from flowing back to the collection port 5 or even overflowing due to pressure changes, thus ensuring the stability and reliability of the entire liquid collection process and avoiding a series of problems that may be caused by liquid backflow, such as the spread of contamination.

[0049] In optional embodiments, such as Figure 1 As shown, the movable threshold device for the warehouse also includes a liquid level sensor 7 and an alarm 9. The liquid level sensor 7 is located in the liquid collection tank 4, and the alarm 9 is installed in the first part 13. The liquid level sensor 7 and the alarm 9 are electrically connected. Both the alarm 9 and the image acquisition device 8 are mounted on the bracket 10.

[0050] It should be noted that the liquid level sensor 7 can be an ultrasonic liquid level gauge, and the alarm 9 can be an audible and visual alarm. The external audible and visual alarm is linked with the internal ultrasonic liquid level gauge. Once the ultrasonic liquid level gauge detects that liquid has entered the collection tank 4, it means that a leak may have occurred, and the audible and visual alarm will be automatically activated to remind the operators to deal with it in time with flashing lights and loud sounds.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A movable threshold device for a warehouse, characterized in that, include: A base, the top surface of which is provided with a storage groove and a barrier wall, at least part of which extends to the opening of the storage groove; A threshold mechanism is installed in the storage slot. The threshold mechanism includes a threshold and a drive assembly. The threshold is rotatably disposed in the storage slot. The drive assembly is pulsatorically connected to the threshold. Under the drive of the drive assembly, the threshold switches between a horizontal posture and a vertical posture. In the horizontal posture, the top surface of the threshold is flush with the top surface of the base. In the vertical posture, the threshold abuts against the barrier wall, so that the base is divided into a first part and a second part that are isolated from each other.

2. A swing threshold arrangement for a storage building according to claim 1, characterized in that The barrier wall is provided with a first contact surface, and in the vertical position, both the first contact surface and the wall of the storage groove abut against the top surface of the threshold.

3. A movable threshold arrangement for a storage compartment according to claim 2, characterized in that It also includes a sealing element, the first contact surface is provided with a first mounting groove, the groove wall of the receiving groove is provided with a second mounting groove, the first mounting groove and the second mounting groove are connected, the sealing element is disposed in the first mounting groove and the second mounting groove, and in the vertical position, the sealing element is sealed to the top surface of the threshold.

4. The swing threshold device for a storage room according to claim 2, wherein The threshold includes a base and a protrusion disposed on the base. A second contact surface is formed between the base and the protrusion along the edge of the threshold. In the vertical position, the first contact surface and the groove wall of the receiving groove abut against the second contact surface. The protrusion is located above the top surface of the base and is sandwiched between two opposing barrier walls.

5. The swing threshold device for a warehouse of claim 1, wherein, It also includes an image acquisition unit, which is installed in the first part and is electrically connected to the drive component.

6. The swing threshold device for a warehouse of claim 1, wherein, The drive assembly includes a linear telescopic member, one end of which is hinged to the bottom surface of the threshold, and the other end of which is hinged to the bottom of the storage groove.

7. The movable threshold device for a warehouse according to claim 6, characterized in that, The storage slot includes a first slot and a second slot disposed at the bottom of the first slot. The first slot is adapted to the threshold, the threshold is rotatably disposed in the first slot, and the drive component is installed in the second slot.

8. The swing threshold device for a storage room according to claim 1, wherein The base has a liquid collection tank in the second part, and the base also has a guide channel communicating with the liquid collection tank in the second part.

9. A swing threshold arrangement for a storage building according to claim 8, characterised in that, The bottom of the collection tank is provided with a liquid collection port, which is in fluid communication with the liquid collection tank through a connecting pipe, so that the liquid entering the liquid collection port flows into the liquid collection tank.

10. The swing threshold device for a warehouse of claim 8, wherein, It also includes a liquid level sensor and an alarm. The liquid level sensor is disposed in the liquid collection tank, and the alarm is installed in the first part. The liquid level sensor and the alarm are electrically connected.