A bumper crash stop device

Abstract

The application discloses a buffer bumper emergency stop device, characterized in that the buffer bumper emergency stop device comprises a bumper structure and an emergency stop mechanism; wherein the bumper structure comprises an upper cross beam, a vertical beam, a lower cross beam and a buffer mechanism; the emergency stop mechanism is a pull wire type relaxation trigger structure, and the emergency stop mechanism is connected between the bumper structure and a mobile device, and is used for realizing emergency stop of the mobile device after the bumper structure collides. The structure of the application enables the mobile device to have a certain buffering effect in the dangerous situation of collision caused by misoperation, out-of-control and the like, and the emergency stop mechanism can be triggered quickly, so that the mobile device is immediately stopped, and further damage to the surrounding personnel environment and the device itself is prevented.

Description

Technical Field

[0001] This disclosure relates to the fields of mechanical and safety technology, and in particular to a buffer bumper emergency stop device. Background Technology

[0002] With the development of modern technology and machinery, more and more jobs and operations are being replaced by unmanned or remotely controlled mobile devices. Compared with manual labor, these mobile devices are more efficient, convenient, and save on labor costs. However, in special circumstances or extreme environments, mobile devices may experience dangerous situations such as loss of control. To improve the safety performance of mobile devices and prevent further damage to surrounding personnel, the environment, and the device itself in case of emergencies, the industry typically uses buffer devices or structures with emergency stop functions to reduce and prevent such injuries. However, traditional buffer emergency stop devices mostly use push-type triggering mechanisms and principles, which have the following disadvantages in actual production and use: 1. Complex structure, high manufacturing and assembly precision requirements, and high production difficulty; 2. The structure is easily damaged during use, especially the triggering mechanism, with a short service life; 3. Sensitivity cannot be adjusted, and slight vibrations may cause false triggering, resulting in poor stability; 4. The device structure is complex, and the working process is prone to instability. The triggering force or stroke will increase with the compression of the buffer mechanism, which can easily cause structural damage; 5. Non-contact emergency stop devices such as optical and electrical devices cannot meet the reliability requirements of emergency stops. Therefore, it is necessary to design a bumper emergency stop device that is simple in structure, easy to manufacture, has high reliability requirements for disconnection, and has buffer and sensitivity adjustment functions. Summary of the Invention

[0003] The purpose of this invention is to overcome the many shortcomings of existing buffer and anti-collision mechanisms and to disclose a buffer bumper emergency stop device. When the bumper of this device is impacted by an external force, it can drive the buffer mechanism to retract and buffer, and at the same time immediately trigger the emergency stop mechanism to stop the movement and operation of the mobile device.

[0004] Other features and advantages of this disclosure will become apparent from the following detailed description, or may be learned in part from practice of this disclosure.

[0005] According to a first aspect of this disclosure, a buffer bumper emergency stop device is provided, the buffer bumper emergency stop device including a bumper structure and an emergency stop mechanism;

[0006] The bumper structure described herein includes an upper crossbeam, a longitudinal beam, a lower crossbeam, and a buffer mechanism;

[0007] One end of the longitudinal beam is connected to the lower part of the upper crossbeam. There are two longitudinal beams. The lower crossbeam is connected transversely in the middle of the two longitudinal beams. The other end of the longitudinal beam is connected to the mobile device. Two sets of buffer mechanisms are installed between the longitudinal beam and the mobile device.

[0008] The buffer mechanism includes an upper support, a buffer spring, and a lower support. The upper support is connected to the mobile device, the lower support is installed on the longitudinal beam, and the buffer spring is connected between the upper support and the lower support.

[0009] The emergency stop mechanism is a pull-wire release trigger structure. The emergency stop mechanism is connected between the bumper structure and the mobile device. When the bumper structure is involved in a collision, the emergency stop mechanism will be triggered to stop the mobile device in an emergency.

[0010] In one exemplary embodiment of this disclosure,

[0011] The emergency stop mechanism includes a tension spring, an adjusting screw, an adjusting nut, a pin with a hole, and a triggering device. The adjusting screw is connected to the pin with a hole via the adjusting nut. One end of the tension spring is connected to the adjusting screw, and the other end of the tension spring is connected to the triggering device. The triggering device is electrically connected to the mobile device and the emergency stop circuit.

[0012] In one exemplary embodiment of this disclosure,

[0013] The upper crossbeam, longitudinal beam, and lower crossbeam are all hollow tube structures.

[0014] In one exemplary embodiment of this disclosure,

[0015] The other end of the longitudinal beam is connected to the hinged support by a pin.

[0016] In one exemplary embodiment of this disclosure,

[0017] Both the upper and lower crossbeams are wrapped with a rubber layer.

[0018] This disclosure has the following beneficial effects:

[0019] 1. The structure of this invention enables the buffer mechanism to reduce or avoid damage to the mobile device itself and the external environment and personnel in the event of a collision caused by loss of control or misoperation.

[0020] 2. At the same time, the structure can quickly trigger the emergency stop system, so that the movement and operation of the mobile device can be stopped immediately, avoiding and reducing the risk of further damage to the surrounding personnel, environment and the mobile device itself.

[0021] 3. This invention has a reliable, stable and durable structure, is not easily damaged or falsely triggered, has adjustable sensitivity, is easy to manufacture and maintain, and has low cost.

[0022] 4. The device of the present invention has a simple overall structure, is lightweight and highly adaptable, and can be applied to various types of mobile devices.

[0023] 5. Emergency stop control via mechanical switches ensures the stability of the overall device. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0025] In the picture:

[0026] 1. Bumper structure; 11. Upper crossbeam; 12. Longitudinal beam; 13. Lower crossbeam;

[0027] 14. Buffer mechanism; 141. Upper support; 142. Buffer spring; 143. Lower support

[0028] 15. Pin; 16. Hinged support;

[0029] 2. Emergency stop mechanism; 21. Tension spring; 22. Adjusting screw; 23. Adjusting nut; 24. Pin with hole; 25. Triggering device; 251. Spring

[0030] 3. Emergency stop circuit; 31. Emergency stop feedback circuit;

[0031] Mobile device A; Trigger point B; Trigger point C.

[0032] Figure 1 This diagram illustrates a three-dimensional structure of the emergency stop device for the buffer bumper in this exemplary embodiment.

[0033] Figure 2 This diagram shows a front view of the emergency stop device for the bumper in this exemplary embodiment.

[0034] Figure 3 This diagram shows a top view of the emergency stop device for the bumper in this exemplary embodiment.

[0035] Figure 4 A partial structural schematic diagram of the buffer mechanism and the emergency stop mechanism in this exemplary embodiment is shown;

[0036] Figure 5 A cross-sectional schematic diagram of the emergency stop mechanism in this exemplary embodiment is shown.

[0037] Figure 6 This example illustrates an emergency stop circuit diagram.

[0038] Figure 7This diagram illustrates a three-dimensional structure of the buffer bumper emergency stop device mounted on a mobile device in this exemplary embodiment. Detailed Implementation

[0039] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, they are provided so that this disclosure will be more comprehensive and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0040] Example 1

[0041] like Figure 1 , Figure 2 , Figure 3 As shown, an exemplary embodiment of this disclosure first provides a buffer bumper emergency stop device, wherein the bumper structure 1 includes an upper crossbeam 11, a longitudinal beam 12, a lower crossbeam 13 and a buffer mechanism 14;

[0042] The upper crossbeam 11 has an arched structure. One end of the longitudinal beam 12 is connected to the lower part of the upper crossbeam 11. There are two longitudinal beams 12. The lower crossbeam 13 is connected to the middle of the two longitudinal beams 12. The other end of the longitudinal beam 12 is connected to the mobile device. The upper crossbeam 11, the longitudinal beam 12 and the lower crossbeam 13 are all hollow tube structures.

[0043] like Figure 4 As shown, the buffer mechanism 14 is provided with two sets installed between the longitudinal beam 12 and the mobile device. The buffer mechanism 14 includes an upper support 141, a buffer spring 142 and a lower support 143. The upper support 141 is connected to the vehicle, the lower support 143 is installed on the longitudinal beam 12, and the buffer spring 142 is connected between the upper support 141 and the lower support 143.

[0044] The emergency stop mechanism 2 is a pull-wire release trigger structure. The emergency stop mechanism 2 is connected between the bumper structure 1 and the mobile device. When the bumper structure 1 is involved in a collision, the emergency stop mechanism 2 is triggered to stop the mobile device in an emergency.

[0045] Specifically, it can be as follows Figure 4 and Figure 5 As shown, the emergency stop mechanism 2 includes a tension spring 21, an adjusting screw 22, an adjusting nut 23, a pin with a hole 24, and a triggering device 25. The adjusting screw 22 is connected to the pin with a hole through the adjusting nut 23. One end of the tension spring 21 is connected to the adjusting screw 22, and the other end of the tension spring 21 is connected to the triggering device 25. The main body of the triggering device 25 is electrically connected to the mobile device and the emergency stop circuit 3.

[0046] The tension spring 21 provides a larger range of pre-tensioning for the trigger device of the emergency stop mechanism 2, preventing the trigger device 25 from being disconnected due to normal bumps and vibrations that cause the relative position of the bumper structure 1 to shift, thus preventing abnormal triggering of the emergency stop function.

[0047] The tension spring 21 can also provide protection for the emergency stop mechanism 2. When the bumper structure 1 falls off or deforms forward due to abnormality or human error, the tension spring 21 can play a buffering role. In extreme cases, it can automatically fall off from the connection between the adjusting screw 22 and the trigger device 25, thereby avoiding damage to the trigger device 25.

[0048] The adjusting nut 23 is used to adjust the tightness of the tension spring 21. It can easily correct the abnormal pre-positioning of the trigger device 25 caused by factors such as low production and assembly precision of the equipment or deformation due to long-term use. It can also adjust the sensitivity of the emergency stop trigger and adjust the trigger distance of the bumper structure 1 to ensure that the emergency stop function works normally and can be used to meet the needs of different usage scenarios.

[0049] For example, the sensitivity of the emergency stop trigger can be adjusted by adjusting nut 23. Test data for adjusting the trigger displacement of bumper structure 1 can be found in Table 1 below.

[0050]

[0051] Table 1

[0052] As shown in Table 1 above, three sets of data were tested respectively. When the tension spring 21 is in its natural state, when the adjusting nut 23 is tightened 3 turns, the tension spring 21 stretches 3.75mm. The bumper structure 1 is in the most sensitive state. When the trigger displacement is greater than 0mm, the entire emergency stop mechanism 2 will be triggered.

[0053] When the tension spring 21 is in its natural state, when the adjusting nut 23 is tightened 4 turns, the tension spring 21 stretches by 5mm. When the trigger displacement of the bumper structure 1 is greater than 9mm, the entire emergency stop mechanism 2 will be triggered.

[0054] When the tension spring 21 is in its natural state, when the adjusting nut 23 is tightened 6 turns, the tension spring 21 stretches 7.5mm. When the trigger displacement of the bumper structure 1 is greater than 13.7mm, the entire emergency stop mechanism 2 will be triggered.

[0055] like Figure 6As shown, the emergency stop circuit 3 in the device of the present invention can be composed of switch S1, switch S2, switch S3, switch S4, pull-up resistor R1, pull-up resistor R2 and mobile device motor switch. One end of switch S1 is connected in parallel with one end of the mobile device motor switch and pull-up resistor R1. The other end of pull-up resistor R1 is connected to the power supply. The other end of switch S1 is connected in parallel with one end of switch S2 and switch S3. The other ends of switch S2 and switch S3 are connected in series with one end of switch S4. The other end of switch S4 is grounded. Switches S1, S2 and S4 are all normally closed switches.

[0056] The emergency stop circuit 3 may also include an emergency stop feedback circuit 31, which includes a switch S5, a pull-up resistor R2, and a control module. One end of the switch S5 is grounded, and the other end of the switch S5 is connected in parallel with the control module and one end of the pull-up resistor R2. The other end of the pull-up resistor R2 is connected to the power supply.

[0057] In this embodiment, under normal conditions, the tension spring 21 is in a stretched state, all the springs 251 in the triggering device 25 are in a compressed state, and they are attracted to the contact point B. The emergency stop circuit is connected, and the mobile device can operate normally.

[0058] When the mobile device is in motion and operating, if the upper crossbeam 11 and / or lower crossbeam 13 are subjected to external force, the bumper structure 1 will shift, and the buffer spring 142 in the buffer mechanism 14 will contract to reduce the impact force and protect the device. At the same time, the impact force from the collision will activate the emergency stop mechanism 2. Specifically, the tension spring 21 will automatically contract, reducing the tension, and all the springs 251 inside the trigger device 25 will release and be in a rebound state, disconnecting from contact B and engaging with contact C, thereby disconnecting the emergency stop circuit 3 and the feedback circuit 31. The logic diagram of the emergency stop circuit 3 is as follows: Figure 6 As shown, emergency stop mechanism 2 is activated, switch S2 is deactivated, and switch S5 is closed. The deactivation of switch S2 disconnects the power to the motor controlling the mobile device's movement, causing the mobile device to stop. Simultaneously, the closure of switch S5 transmits an emergency stop signal to the control module, reporting a collision. The operator can then take further action based on this emergency stop information. Switch S3 is the emergency stop disabling switch. When switch S3 is closed, the bumper emergency stop function can be deactivated or disabled to meet usage needs in certain situations.

[0059] The pull-wire release trigger structure in the device of this invention, in conjunction with the buffer bumper, can effectively avoid defects such as structural damage, false triggering, and inability to adjust sensitivity that are easily caused during the impact compression process. This novel device structure is not easily damaged or falsely triggered, and can be reused multiple times with adjustable sensitivity, reducing costs and facilitating production and maintenance.

[0060] Example 2

[0061] In application, reference Figure 7 The other end of the longitudinal beam 12 is connected to the hinge support 16 via a pin 15. The hinge support 16 is connected to the mobile device. When a collision occurs, the bumper structure can rotate around the pin 15, while compressing the buffer mechanism 14 and triggering the emergency stop mechanism 2.

[0062] Example 3

[0063] In application, both the upper crossbeam 11 and the lower crossbeam 13 are wrapped with a rubber layer to mitigate damage when people, crops and trees are hit.

[0064] In summary, the present invention's structure, in the event of loss of control or collision, provides a buffer mechanism to protect the mobile device from damage caused by external forces. Furthermore, the structure can quickly trigger an emergency stop device, bringing the mobile device to a stop and preventing further injury. The overall structure is simple, lightweight, and highly feasible, allowing for quick and convenient application to various types of mobile devices.

[0065] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the claims.

Claims

1. A buffer bumper emergency stop device, characterized in that, The buffer bumper emergency stop device includes a bumper structure and an emergency stop mechanism; The bumper structure includes an upper crossbeam, a longitudinal beam, a lower crossbeam, and a buffer mechanism. One end of the longitudinal beam is connected to the lower part of the upper crossbeam. Two longitudinal beams are provided, and the lower crossbeam is transversely connected between the two longitudinal beams. The other end of the longitudinal beam is connected to the mobile device. Two sets of buffer mechanisms are provided and installed between the longitudinal beam and the mobile device. The buffer mechanism includes an upper support, a buffer spring, and a lower support. The upper support is connected to the mobile device, the lower support is installed on the longitudinal beam, and the buffer spring is connected between the upper support and the lower support. The emergency stop mechanism is a pull-wire release trigger structure. The emergency stop mechanism is connected between the bumper structure and the mobile device. When the bumper structure collides, it is used to bring the mobile device to an emergency stop.

2. The buffer bumper emergency stop device according to claim 1, characterized in that, The emergency stop mechanism includes a tension spring, an adjusting screw, an adjusting nut, a pin with a hole, and a triggering device. The adjusting screw is connected to the pin with a hole via the adjusting nut. One end of the tension spring is connected to the adjusting screw, and the other end of the tension spring is connected to the triggering device. The triggering device is electrically connected to the mobile device and the emergency stop circuit.

3. The emergency stop device for a buffer bumper according to claim 1, characterized in that, The upper crossbeam, longitudinal beam, and lower crossbeam are all hollow tube structures.

4. The buffer bumper emergency stop device according to claim 1, characterized in that, The other end of the longitudinal beam is connected to the hinged support by a pin.

5. A buffer bumper emergency stop device according to claim 1, characterized in that, Both the upper and lower crossbeams are wrapped with a rubber layer.

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