Lifting bed falling protection device and lifting bed

Abstract

The embodiment of the utility model provides a lifting bed falling protection device and a lifting bed. The falling protection device for the lifting bed comprises a brake device fixed at a first position of the lifting bed; the trigger is fixed at a second position of the lifting bed and accommodates a telescopic transmission belt, and the transmission belt comprises an extension end connected with the brake device; when the object carrying table of the lifting bed moves up and down at a speed lower than the first speed, the driving belt retracts or stretches out of the trigger, when the object carrying table of the lifting bed moves up and down at a speed higher than the second speed, stretching and retracting of the driving belt are locked, and therefore movement of the lifting bed is stopped. Wherein the second speed is greater than or equal to the first speed. According to the embodiment of the invention, the safety of the lifting bed is improved through a simple structure.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of medical equipment, and in particular to a fall protection device for a lifting bed and a lifting bed. Background Art

[0002] Lift beds are widely used in the medical field, not only in the inpatient department of the hospital, but also in the outpatient department of the hospital, where a large number of lift beds are needed to assist doctors in their work. The repair and maintenance of lift beds has become an important task.

[0003] Figure 1 is a schematic diagram of an example of a lifting bed. Figure 1 As shown, a general lifting bed has an object carrying platform 11 and a base 12 and a lifting device 13 supported between the object carrying platform 11 and the base 12. The lifting device 13 can be a mechanical device, for example, composed of at least one pair of cross arms, and driven by a lifting drive structure 14 arranged on the base 12; it can also be a pneumatic device, for example, composed of an electrically controlled structure, and so on.

[0004] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solutions of the present application and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because they are described in the background technology section of the present application. Utility Model Content

[0005] The inventors have found that when the staff is repairing or maintaining the lift bed, they may remove the driving device, such as the lift motor, ball screw, etc. However, if the staff forgets to lock the lift device 13 due to negligence, the object carrier 11 may fall, so the staff may be injured or even endangered by the suddenly falling object carrier 11. This situation is usually carried out when the lift bed is powered off, so the lift table cannot be effectively braked.

[0006] In order to solve at least one of the above problems or other similar problems, an embodiment of the present application provides a lift bed fall protection device and a lift bed to solve the problem of the object carrying platform of the lift bed falling due to negligence when the staff is performing repair or maintenance work on the lift bed.

[0007] According to one aspect of an embodiment of the present application, a fall protection device for a lifting bed is provided, comprising:

[0008] a brake device fixed to the first position of the lifting bed; and

[0009] a trigger, which is fixed to the second position of the lifting bed and accommodates a retractable transmission belt, wherein the transmission belt includes an extended end connected to the braking device;

[0010] When the object carrying platform of the lifting bed moves up and down at a speed lower than a first speed, the transmission belt is retracted or extended from the trigger, and when the object carrying platform of the lifting bed moves up and down at a speed higher than a second speed, the extension and retraction of the transmission belt is locked, wherein the second speed is greater than or equal to the first speed.

[0011] In some embodiments, the trigger includes:

[0012] A turntable having a rotating reel mounted at the axis thereof and a receiving portion disposed at the outer periphery thereof;

[0013] a ring-shaped internal gear which accommodates the rotating disk;

[0014] a braking claw movably received in the receiving portion; and

[0015] the transmission belt wound around the rotating reel;

[0016] When the object carrier platform of the lifting bed moves up and down at a speed lower than the first speed, the braking claw rotates with the turntable and is located in the accommodating portion; when the object carrier platform of the lifting bed moves up and down at a speed higher than the second speed, the braking claw is at least partially moved out of the accommodating portion to engage the turntable and the internal gear, so that the extension and retraction of the transmission belt is locked.

[0017] In some embodiments, the trigger further comprises:

[0018] A first telescopic spring, one end of which is connected to the braking claw and the other end of which is connected to the rotating disk; and

[0019] The turntable cover is arranged on one side of the turntable, the braking claw and the first telescopic spring are arranged on both sides of the turntable cover respectively, and the transmission belt is arranged on the other side of the turntable.

[0020] In some embodiments, the trigger further comprises:

[0021] A rewinding spring is disposed on the other side of the transmission belt and fixed to the rotating reel of the turntable, and the rewinding spring is used to reset the transmission belt.

[0022] In some embodiments, the braking device is a fixing seat fixed on one of the cross arms of the lifting bed; and the trigger is fixed on the other cross arm of the lifting bed.

[0023] In other embodiments, the braking device is fixed at a first position on the lifting bed; and the trigger is fixed at a second position on the base of the lifting bed.

[0024] In some embodiments, the braking device includes a braking guide rail fixed on the base of the lifting bed and a braking part fixed to the lifting drive structure of the lifting bed and cooperating with the braking guide rail, the braking guide rail is provided with a groove, and the braking part includes a first pin, and when the extension and retraction of the transmission belt of the trigger is locked, the first pin is pushed out and engaged in the groove.

[0025] In some embodiments, the braking device also includes a splitter, which is fixed on the base of the lifting bed and is located between the trigger and the braking guide rail, and is used to change the extension direction of the transmission belt from the trigger so that the protruding end of the transmission belt is connected to the braking part.

[0026] In some embodiments, the number of the braking rails and the number of the braking parts are 2 respectively, and each braking part corresponds to a braking rail.

[0027] In some embodiments, the braking portion comprises:

[0028] a pin fixing block having a first through hole penetrating the pin fixing block along a first direction; and

[0029] A pin assembly is movable in the first through hole along the first direction, and the pin assembly includes the first pin.

[0030] In some embodiments, the pin fixing block further has a second through hole penetrating the pin fixing block to the first through hole along a second direction; the first pin has a side hole recessed along the second direction; the braking portion further includes:

[0031] A release pin passes through the second through hole and extends into the side hole of the first pin, wherein the release pin is connected to the protruding end of the transmission belt. When the extension and retraction of the transmission belt is locked, the release pin is pulled out from the first pin, and the first pin is pushed into the groove of the brake guide rail along the first direction.

[0032] In some embodiments, the pin assembly also includes a second telescopic spring located on the other side of the first direction of the first pin and a third cover portion located on the other side of the first direction of the second telescopic spring; when the telescopic movement of the transmission belt is locked, the release pin is pulled out from the first pin, and the first pin is inserted into the groove of the brake guide rail under the push of the second telescopic spring.

[0033] In some embodiments, a pit is provided on the release pin, and the pin fixing block also has a third through hole that penetrates the pin fixing block to the pit along a third direction; a release component for adjusting the release force of the release pin is provided in the third through hole, and when the extension and retraction of the transmission belt is locked, the release pin overcomes the force of the release component and is pulled out from the first pin.

[0034] In some embodiments, the release assembly comprises:

[0035] a force adjustment pin, one end of which is located in the recess;

[0036] A third telescopic spring, one end of which abuts against the other end of the force adjustment pin; and

[0037] A force adjusting screw is provided to press the third telescopic spring from the other end of the third telescopic spring.

[0038] In some embodiments, the pin fixing block also has a fourth through hole that passes through the pin fixing block to the first through hole along the second direction, and the fourth through hole extends along the first direction; the first pin also has a handle, and the handle moves in the fourth through hole along the first direction to reset the first pin to its initial position.

[0039] According to another aspect of an embodiment of the present application, a lifting bed is provided, and the lifting bed includes the protection device described in any one of the aforementioned embodiments.

[0040] One of the beneficial effects of the embodiment of the present application is that the lifting bed protection device according to the embodiment of the present application solves the problem of the object support platform of the lifting bed falling due to negligence of the staff when performing repair or maintenance work on the lifting bed, and can protect the safety of the staff at any time when the lifting bed is powered off.

[0041] With reference to the following description and accompanying drawings, the specific embodiments of the present application are disclosed in detail, indicating the way in which the principles of the present application can be adopted. It should be understood that the embodiments of the present application are not limited in scope. Within the scope of the terms of the appended claims, the embodiments of the present application include many changes, modifications and equivalents.

[0042] Features described and / or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

[0043] It should be emphasized that the term “include / comprises” when used herein refers to the presence of features, integers, steps or components, but does not exclude the presence or addition of one or more other features, integers, steps or components. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The elements and features described in one figure or one implementation of the present application embodiment may be combined with the elements and features shown in one or more other figures or implementations. In addition, in the accompanying drawings, similar reference numerals represent corresponding parts in several figures and can be used to indicate corresponding parts used in more than one implementation.

[0045] The included drawings are used to provide a further understanding of the embodiments of the present application, which constitute a part of the specification, are used to illustrate the implementation methods of the present application, and together with the text description, explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0046] Figure 1 is a schematic diagram of an example of a lifting bed;

[0047] Figure 2 is a schematic diagram of a fall protection device for a lifting bed according to an embodiment of the present application;

[0048] Figure 3 is a schematic diagram of an example of a trigger of a protection device according to an embodiment of the present application;

[0049] Figure 4 is a schematic diagram of the working state of the trigger of the protection device of the embodiment of the present application;

[0050] Figure 5 is a schematic diagram of the configuration position of the protection device according to some embodiments;

[0051] Figure 6 is a schematic diagram of the configuration position of the protection device according to other embodiments;

[0052] Figure 7 is a schematic diagram of an example of a braking portion of an embodiment of the present application;

[0053] Figure 8 yes Figure 7 A schematic diagram of another state of the brake portion shown;

[0054] Fig. 9 yes Figure 7 An exploded schematic diagram of the brake portion shown;

[0055] Fig.10 Schematic diagram of a lifting bed according to an embodiment of the present application. DETAILED DESCRIPTION

[0056] With reference to the accompanying drawings, the above and other features of the present application will become apparent through the following description. In the specification and the accompanying drawings, specific embodiments of the present application are specifically disclosed, which show some embodiments in which the principles of the present application can be adopted. It should be understood that the present application is not limited to the described embodiments. On the contrary, the present application includes all modifications, variations and equivalents that fall within the scope of the attached claims.

[0057] In the embodiments of the present application, the terms "first", "second", etc. are used to distinguish different elements in terms of title, but do not indicate the spatial arrangement or temporal order of these elements, etc., and these elements should not be limited by these terms. The term "and / or" includes any one and all combinations of one or more of the associated listed terms. The terms "comprising", "including", "having", etc. refer to the presence of the stated features, elements, components or components, but do not exclude the presence or addition of one or more other features, elements, components or components.

[0058] In the embodiments of the present application, the singular forms "a", "the", etc. may include plural forms and should be broadly understood as "a kind" or "a type" rather than being limited to the meaning of "one"; in addition, the term "said" should be understood to include both singular and plural forms, unless the context clearly indicates otherwise. In addition, the term "according to" should be understood as "at least in part according to...", and the term "based on" should be understood as "at least in part based on...", unless the context clearly indicates otherwise.

[0059] The embodiments of the present application are described below with reference to the accompanying drawings. In the following description, unless otherwise specified, "up" and "down" refer to "up" and "down" in the direction of gravity.

[0060] The embodiment of the present application provides a fall protection device for a lifting bed, which is applied to a lifting bed in the medical field. The present application is not limited thereto, and the protection device can also be applied to lifting beds in other fields.

[0061] Figure 2 It is a schematic diagram of a fall protection device for a lifting bed according to an embodiment of the present application, illustrating the basic structure of the protection device.

[0062] like Figure 2 As shown, the protection device 20 of the embodiment of the present application includes a braking device 21 and a trigger 22. The braking device 21 can be fixed at a first position of the lift bed, such as on one of the cross arms of the lift bed or on the base and / or the lifting drive structure of the lift bed, etc.; the trigger 22 can be fixed at a second position of the lift bed, such as on the other arm of the cross arm of the lift bed or on a position on the base of the lift bed different from the braking device 21, etc.

[0063] The trigger 22 contains a retractable transmission belt 35, which includes an extended end connected to the brake device 21. When the object carrier of the lift bed moves up and down at a speed lower than the first speed, the transmission belt 35 is retracted or extended from the trigger 22, and the object carrier of the lift bed can move up and down normally; when the object carrier of the lift bed moves up and down at a speed higher than the second speed (the second speed is greater than or equal to the first speed), the trigger 22 is triggered, and at this time, the extension and retraction of the transmission belt 35 is locked, thereby preventing the movement of the lift bed.

[0064] According to the above embodiment, when the staff is performing repair or maintenance work on the lift bed, if the object carrying platform of the lift bed suddenly accelerates, for example, the object carrying platform of the lift bed suddenly falls due to negligence, when the speed is higher than the second speed, the extension and retraction of the transmission belt is locked, and due to the action of the transmission belt, the movement of the object carrying platform of the lift bed stops, thereby protecting the safety of the staff.

[0065] In the embodiment of the present application, there is no limitation on the structure of the trigger 22 , as long as it can accommodate the transmission belt 35 , and the transmission belt 35 can be extended under the action of external force and retracted under the action of internal force.

[0066] Figure 3 FIG. 1 is a schematic diagram of an example of a trigger of a protection device according to an embodiment of the present application. Figure 3 As shown, in some examples, trigger 22 includes:

[0067] The turntable 31 has a rotating reel O mounted at its axis and a receiving portion at its periphery;

[0068] An annular internal gear 34 accommodating the rotating disk 31;

[0069] A locking claw 32 movably received in the receiving portion; and

[0070] The transmission belt 35 is wound around the above-mentioned rotating reel.

[0071] According to the above embodiment, when the object carrier platform of the lifting bed moves up and down at a speed lower than the first speed, the braking claw 32 rotates with the turntable 31 and is located in the receiving portion; when the object carrier platform of the lifting bed moves up and down at a speed higher than the second speed, the braking claw 32 at least partially moves out of the receiving portion to engage the turntable 31 and the internal gear 34, so that the extension and retraction of the transmission belt 35 is locked.

[0072] Figure 4 Schematic diagram of the working state of the trigger of the protection device of the embodiment of the present application. Figure 4As shown on the left side of the figure, under normal circumstances, the object carrying platform of the lifting bed moves up and down at a speed lower than the first speed. At this time, the braking claw 32 is located in the receiving portion of the rotating disk 31 and rotates with the rotating disk 31. The transmission belt 35 is driven by the rotating disk 31 to extend from the trigger 22 or retract into the trigger 22, and the object carrying platform of the lifting bed can move up and down normally; Figure 4 As shown on the right side of the figure, when the object carrying platform of the lifting bed suddenly falls, the object carrying platform of the lifting bed moves up and down at a speed higher than the second speed. At this time, the rotation speed of the turntable 31 increases, and at least a part of the braking claw 32 escapes from the accommodating portion of the turntable 31, and clamps the turntable 31 and the internal gear 34, thereby restricting the turntable 31 from continuing to rotate. At this time, the trigger 22 is triggered, and the extension and retraction of the transmission belt 35 is locked, and it no longer extends or retracts. The movement of the object carrying platform of the lifting bed is also stopped under the action of the trigger 22.

[0073] In some embodiments, Figure 3 and Figure 4 As shown, the receiving portion of the rotating disk 31 is a notch provided on the outer periphery of the rotating disk 31, and the brake claw 32 is arranged at the notch of the rotating disk 31, and the two are connected by a first telescopic spring 33. When the rotating disk 31 rotates, the brake claw 32 also rotates with the rotating disk 31. The present application does not limit this, and the rotating disk 31 and the brake claw 32 can also be other shapes, as long as the two can rotate together, and when the rotation speed is high, at least a part of the brake claw 32 can escape from the notch (receiving portion) of the rotating disk 31.

[0074] In some embodiments, Figure 3 and Figure 4 As shown, the inner gear 34 is roughly annular, and its inner circumference has a plurality of teeth arranged at equal intervals. When at least a portion of the brake claw 32 slides out of the notch (receiving portion) of the turntable 31, it can clamp the inner gear 34 and the turntable 31, thereby limiting the rotation of the turntable 31, and further limiting the extension and contraction of the transmission belt 35. The present application does not limit the size, shape, and spacing of the teeth arranged on the inner circumference of the inner gear 34, as long as the brake claw 32 that slides out can be clamped on the turntable 31. In addition, the present application does not limit the shape of the outer circumference of the inner gear 34. Figure 3 The figure shows a case where four mounting parts 341 are provided on the outer circumference thereof. In addition, the outer circumference of the internal gear 34 may also have other number of mounting parts, such as three or two mounting parts, etc., as long as it can be fixed to the lifting bed.

[0075] In the embodiment of the present application, the transmission belt 35 can be made of a non-elastic material to ensure the strength of the transmission belt, for example, it can be a metal wire, or a transmission belt made of polyester, polypropylene, nylon, etc.

[0076] In some embodiments, Figures 3 to 5 As shown, the trigger 22 further includes a first telescopic spring 33 and a turntable cover 36. One end of the first telescopic spring 33 is connected to the brake claw 32, and the other end is connected to the turntable cover 36. The turntable cover 36 is arranged on one side of the turntable 31 ( Figure 3 The transmission belt 35 is arranged on the other side of the turntable 31 ( Figure 3 In addition, the brake claw 32 and the first telescopic spring 33 are respectively arranged on both sides of the turntable cover 36, as shown in FIG. Figure 3 As shown, the brake claw 32 is disposed on one side of the turntable cover 36 ( Figure 3 The first telescopic spring 33 is disposed on the other side of the turntable cover 36 ( Figure 3 left side shown).

[0077] The first telescopic spring 33 can connect the brake claw 32 and the rotating disk 31. When the rotating speed of the rotating disk 31 is too high, the brake claw 32 overcomes the pulling force of the first telescopic spring 33 and escapes from the above-mentioned receiving portion of the rotating disk 31, thereby being stuck between the rotating disk 31 and the internal gear 34, so that the rotating disk 31 cannot continue to rotate, thereby triggering the trigger 22, so that the extension and contraction of the transmission belt 35 is locked. In addition, the rotating disk cover 36 can prevent the brake claw 32 from escaping from the axial direction (the extension direction of the axis of the rotating disk 31 or the direction parallel to the axis of the rotating disk 31) when the rotating disk 31 rotates, thereby playing the role of limiting the brake claw 32 in the axial direction.

[0078] In some embodiments, Figure 3 As shown, the trigger 22 further includes a rewinding spring 37 , which is disposed on the other side of the transmission belt 35 and fixed to the rotating reel of the turntable 31 .

[0079] The rewinding spring 37 can be used to reset the transmission belt 35. For example, after the transmission belt 35 is extended from the trigger 22 due to an external force, when the external force disappears or is less than the tension of the rewinding spring 37, the transmission belt 35 retracts into the interior of the trigger 22 under the action of the rewinding spring 37.

[0080] In some embodiments, Figure 3 As shown, the turntable 31 is provided with a rotating reel O, and a first through hole 361 is provided on the turntable cover 36, through which the front end of the rotating reel O of the turntable 31 passes, so as to limit the turntable 31. The shape of the first through hole 361 matches the front end of the rotating reel O of the turntable 31. The first through hole 361 includes two key slots (not numbered), and the rotating reel O includes positioning keys corresponding to the key slots. After the rotating reel O is installed on the turntable 31, the positioning keys are engaged with the key slots, thereby ensuring that the rotating reel O rotates with the turntable 31 and eliminating the relative displacement between the two in the rotation direction.

[0081] In some embodiments, Figure 3As shown, the brake claw 32 has a sliding post 321, and a second through hole 362 is provided on the turntable cover 36 for the sliding post 321 of the brake claw 32 to pass through. The second through hole 362 can also be understood as a limiting groove of the sliding post 321 to limit the moving track of the brake claw 32. Since the brake claw 32 may slide out from the receiving portion of the turntable 31, the shape of the second through hole 362 matches the sliding track of the sliding post 321, such as an arc shape, etc. In addition, the sliding post 321 of the brake claw 32 is also used to connect the first telescopic spring 33, for example, one end of the first telescopic spring 33 can be hooked or connected to the sliding post 321 by other means. The turntable cover 36 is provided with a positioning post 363 at a position adjacent to the second through hole 362 or at other appropriate positions, and the other end of the first telescopic spring 33 is connected to the positioning post 363. As a result, the braking claw 32 is subjected to the pulling force of the first telescopic spring 33, which is smaller than the centrifugal force generated by the braking claw 32 when the turntable 31 rotates at the second speed or above. Accordingly, the braking claw 32 overcomes the pulling force of the first telescopic spring 33 and moves along the trajectory of the second through hole 362 in the accommodating space between the turntable 31 and the internal gear 34, so that the braking claw 32 engages the turntable 31 and the internal gear 34.

[0082] In some embodiments, Figure 3 As shown, the trigger 22 further includes a first cover portion 38 for accommodating the transmission belt 35, a second cover portion 39 for accommodating the rewind spring 37, and a cover portion 39 disposed on one side of the turntable cover 36 ( Figure 3 The first cover 38 and the second cover 39 form a box body for accommodating the transmission belt 35, and the first cover 38 is provided with a slot or opening corresponding to the shape of the transmission belt 35 so that the transmission belt 35 can extend outside the box body. The first cover 38 and the second cover 39 are both provided with a coaxial through hole at the center thereof, and the rotating reel O passes through the through holes to be connected with the transmission belt 35 in the box body and connected with the rewinding spring 37 accommodated between the second cover 39 and the rear cover 311.

[0083] In the above embodiment, if Figure 3 and Figure 4 As shown, similar to the four mounting portions 341 provided on the outer circumference of the internal gear 34, four mounting portions are also provided on the outer circumferences of the first cover portion 38, the second cover portion 39, the front cover 310 and the rear cover 311, respectively, for fixing them together by screws. Similarly, the present application does not limit the number, position and shape of the mounting portions.

[0084] As mentioned above, the turntable 31 and the brake claw 32 are accommodated in the internal gear 34 and covered by the turntable cover 36, the transmission belt 35 is accommodated in the box body composed of the first cover part 38 and the second cover part 39, and the rewinding spring 37 is accommodated between the second cover part 39 and the rear cover 311. Figure 3 and Figure 4 As shown, during assembly, the front cover 310, the internal gear 34, the first cover part 38, the second cover part 39 and the rear cover 311 are tightly connected together in sequence through studs and nuts or other means, and a sealing structure is formed between two adjacent parts, thereby achieving dustproof or moisture-proof effects.

[0085] In the embodiment of the present application, the braking device 21 and the trigger 22 can be fixed at different positions of the lifting bed.

[0086] In some embodiments, the lifting device of the lifting bed is a cross-arm structure, such as Figure 1 As shown, the brake device 21 is a fixed seat fixed on one of the cross arms of the lifting bed, and the trigger 22 is fixed on the other cross arm of the lifting bed.

[0087] Figure 5 FIG. 1 is a schematic diagram of the configuration position of the protection device according to the above embodiment. Figure 5 As shown, the braking device (fixed seat) 21 and the trigger 22 can be fixed to the two cross arms of the lifting bed by screws respectively, and the protruding end of the transmission belt 35 extending from the trigger 22 is connected to the braking device (fixed seat) 21.

[0088] The present application does not limit the specific structure of the braking device (fixed seat) 21.

[0089] According to the above embodiment, as the object carrying platform of the lift bed moves up and down normally, the transmission belt 35 extends from the trigger 22 or retracts into the inside of the trigger 22. Once the object carrying platform of the lift bed suddenly falls, the trigger 22 is triggered, and the extension and retraction of the transmission belt 35 is locked. At this time, the transmission belt 35 can neither extend nor retract, the cross arm of the lift bed maintains the current angle, and the object carrying platform will not continue to fall. Therefore, the protection of the object carrying platform of the lift bed from falling is achieved through a simple structure, thereby ensuring the safety of the staff.

[0090] In some embodiments, the brake device 21 is fixed at a first position on the lift bed, for example, fixed at a first position of the base of the lift bed and / or the lift drive structure, and the trigger 22 is fixed at a second position of the base of the lift bed.

[0091] Figure 6 FIG. 1 is a schematic diagram of the configuration position of the protection device according to the above embodiment. Figure 6 As shown, the brake device 21 is fixed below the object bearing platform of the lifting bed (for example, below the cross arm), and the trigger 22 is fixed to the side of the base of the lifting bed.

[0092] In some embodiments, in order to connect the transmission belt 35 extending from the trigger 22 to the brake device 21 to trigger the brake device 21 to brake, as shown in FIG. Figure 6 As shown, at least one wire divider 23 may be provided between the trigger 22 and the brake device 21. The wire divider 23 is optional, and based on the setting position, the wire divider 23 may be omitted when the transmission belt 35 extending from the trigger 22 can be directly connected to the brake device 21 and when the brake device 21 is braked and controlled without interfering with other components of the lifting bed.

[0093] In the above embodiment, the wire divider 23 can also be fixed on the base of the lifting bed and located between the trigger 22 and the braking device 21, and is used to change the extension direction of the transmission belt 35 from the trigger 22, so that the extended end of the transmission belt 35 is connected to the braking device 21.

[0094] In some embodiments, Figure 6 As shown, the braking device 21 includes a braking guide rail 61 and a braking portion 62 that cooperates with the braking guide rail 61. The braking guide rail 61 is fixed on the base of the lift bed, and the braking portion 62 is fixed on the lifting drive structure 63 of the lift bed. The protruding end of the transmission belt 35 is connected to the braking portion 62. A groove 611 is provided on the braking guide rail 61. The braking portion 62 includes a first pin 621. When the extension and retraction of the transmission belt 35 of the trigger 22 is locked, the first pin 621 is pushed out of the braking portion 62 and engaged in the groove 611, thereby preventing the movement of the object carrier of the lift bed.

[0095] According to the above embodiment, when the trigger 22 is triggered, the extension and retraction of the transmission belt 35 is locked, and the braking part 62, driven by the transmission belt 35, causes the first pin 621 to engage in the groove 611, thereby preventing the movement of the object carrier platform of the lifting bed, thereby ensuring the safety of the staff.

[0096] exist Figure 6 In the example, the number of brake guide rails 61 and the number of brake parts 62 are respectively 2, and each brake part 62 corresponds to one brake guide rail 61, but the present application is not limited thereto, and the number of brake guide rails 61 and the number of brake parts 62 may also be other, for example, only 1, as long as the brake part 62 can enable the first pin 621 to engage in the groove 611 of the brake guide rail 61 under the drive of the transmission belt 35.

[0097] exist Figure 6In the example, the transmission belt 35 is a metal wire, and corresponding to two brake parts 62, the transmission belt 35 pulled out from the trigger 22 is also two, so as to respectively perform braking control on the two brake parts 62. The present application does not limit this. In the case where there are multiple brake parts 62 and brake rails 61, the transmission belt 35 pulled out from the trigger 22 is also multiple; in addition, in the case where there are only one brake part 62 and one brake rail 61, the transmission belt 35 pulled out from the trigger 22 is also one, and the one transmission belt 35 can be, for example, a nylon transmission belt.

[0098] In the embodiment of the present application, there is no limitation on the structure of the braking portion 62, as long as when the trigger 22 is triggered (that is, when the extension and retraction of the transmission belt 35 is locked), as the transmission belt 35 acts, the first pin 621 can be pushed out and engaged with the braking guide rail 61, thereby preventing the movement of the object carrier platform of the lifting bed.

[0099] Figure 7 is a schematic diagram of an example of the braking portion 62, showing a situation where the first pin 621 is not ejected; Figure 8 yes Figure 7 The schematic diagram of another state of the braking portion 62 shown shows the situation where the first pin 621 is ejected; Fig. 9 yes Figure 7 An exploded schematic diagram of the braking portion 62 is shown.

[0100] In some embodiments, Figures 7 to 9 As shown, the braking portion 62 includes a pin fixing block 622 and a pin assembly, and the pin fixing block 622 has a first direction ( Fig. 9 The X direction shown in the figure, that is, the direction perpendicular to the first surface S1 of the pin fixing block 622) passes through the first through hole H1 of the pin fixing block 622, and the pin assembly can move along the first direction in the first through hole H1. The pin assembly includes the aforementioned first pin 621, and the other side ( Fig. 9 The second telescopic spring 623 (on the right side shown in FIG. 1 ) and the third cover portion 624 (on the other side in the first direction of the second telescopic spring 623) are provided. Fig. 9 When the trigger 22 is triggered, that is, the extension of the transmission belt 35 is locked, the first pin 621 is pushed out from the pin fixing block 622 by the second extension spring 623 and is locked into the groove 611 of the brake guide rail 61. In this way, the movement of the object bearing platform of the lifting bed can be limited.

[0101] In some embodiments, Figures 7 to 9 As shown, the pin fixing block 622 also has a second direction ( Fig. 9The Y direction shown, that is, the direction perpendicular to the second surface S2 of the pin fixing block 622) passes through the pin fixing block 622 to the second through hole H2 of the first through hole H1, the first pin 621 has a side hole H3 recessed along the second direction, and the braking part 62 also includes a release pin 625, which passes through the second through hole H2 and extends into the side hole H3 of the first pin 621.

[0102] Further Figure 6 As shown, the release pin 625 is connected to the protruding end of the transmission belt 35. When the trigger 22 is triggered, that is, the extension and retraction of the transmission belt 35 is locked, the release pin 625 is pulled out from the first pin 621, the first pin 621 is released, and is pushed into the groove 611 of the brake guide rail 61 along the first direction, thereby engaging with the groove 611, thereby limiting the movement of the object carrier platform of the lifting bed.

[0103] In some embodiments, Figures 7 to 9 As shown, the release pin 625 is provided with a recess H4, and the pin fixing block 622 also has a third direction ( Fig. 9 The Z direction shown, that is, the direction perpendicular to the third surface S3 of the pin fixing block 622) passes through the pin fixing block 622 to the third through hole H5 of the pit H4, and a release component for adjusting the release force of the release pin 625 is arranged in the third through hole H5. When the extension and retraction of the transmission belt 35 is locked, the release pin 625 overcomes the force of the release component and is pulled out from the first pin 621.

[0104] By providing a release assembly, the release force of the release pin 625 can be adjusted, and during normal operation, the release pin 625 is fixed by the release assembly.

[0105] In the above embodiment, if Figures 7 to 9 As shown, the release assembly includes a force adjustment pin 626, a third telescopic spring 627 and a force adjustment screw 628. One end of the force adjustment pin 626 ( Fig. 9 The lower end shown in FIG. 1 is located in the recess H4, and one end of the third telescopic spring 627 ( Fig. 9 The lower end shown in FIG. 1 abuts against the other end of the force adjustment pin 626 ( Fig. 9 The force adjustment screw 628 is adjusted from the other end of the third telescopic spring 627 ( Fig. 9 The upper end shown in the figure) presses the third telescopic spring 627.

[0106] Thus, the release force of the release pin 625 is adjusted by adjusting the force adjustment screw with the help of the resistance of the third telescopic spring 627. When the extension and retraction of the transmission belt 35 is locked, the release pin 625 overcomes the force applied by the force adjustment screw 628 and is pulled out, and the first pin 621 is pushed out under the action of the second telescopic spring 623 and stuck in the groove 611.

[0107] The above structure of the release assembly is only an example, and the present application does not limit its specific implementation method. On the basis of being able to adjust the release force of the release pin 625, other implementation methods that can be thought of by technical personnel in this field are applicable.

[0108] In some embodiments, Figures 7 to 9 As shown, the pin fixing block 622 also has a fourth through hole H6 that passes through the pin fixing block 622 to the first through hole H1 along the second direction (Y direction), and the fourth through hole H6 extends along the first direction (X direction). The first pin 621 also has a handle 629, and the handle 629 moves in the fourth through hole H6 along the first direction (X direction) to reset the first pin 621 to its initial position.

[0109] In the above embodiment, if Fig. 9 As shown, there is no restriction on the length L and width of the fourth through hole H6 (that is, the length of the fourth through hole H6 in the first direction), as long as it can accommodate the handle 629 so that as the first pin 621 moves along the first direction, the handle 629 can move along the first direction in the fourth through hole H6.

[0110] According to the above embodiment, by providing the fourth through hole H6 and the handle 629 , the first pin 621 can be reset, so that the first pin 621 can be withdrawn from the groove 611 of the brake guide rail 61 when necessary.

[0111] It is worth noting that the above only describes the components or modules related to the present application, but the present application is not limited thereto. The protection device of the embodiment of the present application may also include other components or modules, and various implementation methods that can be thought of by those skilled in the art based on the above disclosure are included in the protection scope of the present application.

[0112] According to the above embodiment, if the object carrier of the lift bed suddenly falls, the trigger 22 will be triggered, the transmission belt 35 will pull out the release pin 625, and then the first pin 621 will be released and pushed into the groove 611 of the brake guide rail 61. In the above manner, the trigger 22 can withstand a small force to guide the mechanical structure. The problem of the object carrier of the lift bed falling due to negligence when the staff is repairing or maintaining the lift bed is solved, and the safety of the staff can be protected at any time when the lift bed is powered off.

[0113] The embodiment of the present application also provides a lifting bed. Fig.10 This is a schematic diagram of a lifting bed in an embodiment of the present application. The lifting bed can be a lifting bed used in the medical field or a lifting bed used in other fields. The present application does not limit the structure and implementation method of the lifting bed.

[0114] In the embodiment of the present application, the protective device described in the above embodiment is installed on the lifting bed. The protective device is divided into two parts, one part is a trigger, and the other part is a braking device.

[0115] In some embodiments, a trigger is mounted on one arm of the cross arm of the lift bed, and a braking device is mounted on the other arm of the cross arm of the lift bed. When an emergency occurs, such as when the object carrier of the lift bed suddenly falls, the trigger is triggered to prevent the transmission belt from being pulled out, thereby preventing the lift bed from being lifted or lowered, thus protecting the safety of the staff.

[0116] In other embodiments, the trigger is installed at a certain position on the base of the lift bed, and the braking device is installed at other positions on the base of the lift bed. When an emergency occurs, such as the object carrier of the lift bed suddenly falls, the trigger is triggered to prevent the transmission belt from being pulled out, and the release pin is released under the drive of the transmission belt. The first pin is further released and stuck in the groove of the brake guide rail, thereby preventing the movement of the lift bed and protecting the safety of the staff.

[0117] It can be seen from the above embodiments that the lifting bed in the embodiment of the present application solves the problem of the object support platform of the lifting bed falling due to negligence of the staff when performing repair or maintenance work on the lifting bed, and the safety of the staff can be protected at any time when the lifting bed is powered off.

[0118] It is worth noting that the above only describes the components or modules related to the present application, but the present application is not limited thereto. The lifting bed of the embodiment of the present application may also include other components or modules, and the specific contents of these components or modules may refer to the relevant technology.

Claims

1. A fall protection device for a lifting bed, characterized in that: The protection device comprises: a brake device fixed to the first position of the lifting bed; and a trigger, which is fixed to the second position of the lifting bed and accommodates a retractable transmission belt, wherein the transmission belt includes an extended end connected to the braking device; When the object carrier platform of the lifting bed moves up and down at a speed lower than the first speed, the transmission belt is retracted or extended from the trigger, and when the object carrier platform moves up and down at a speed higher than the second speed, the extension and retraction of the transmission belt is locked, and the second speed is greater than or equal to the first speed.

2. The protection device according to claim 1, characterized in that: The triggers include: A turntable having a rotating reel mounted at the axis thereof and a receiving portion disposed at the outer periphery thereof; a ring-shaped internal gear which accommodates the rotating disk; a braking claw movably received in the receiving portion; and the transmission belt wound around the rotating reel; When the object carrier platform of the lifting bed moves up and down at a speed lower than the first speed, the braking claw rotates with the turntable and is located in the accommodating portion; when the object carrier platform of the lifting bed moves up and down at a speed higher than the second speed, the braking claw is at least partially moved out of the accommodating portion to engage the turntable and the internal gear, so that the extension and retraction of the transmission belt is locked.

3. The protection device according to claim 2, characterized in that: The trigger also includes: A first telescopic spring, one end of which is connected to the braking claw and the other end of which is connected to the rotating disk; and The turntable cover is arranged on one side of the turntable, the braking claw and the first telescopic spring are arranged on both sides of the turntable cover respectively, and the transmission belt is arranged on the other side of the turntable.

4. The protection device according to claim 3, characterized in that: The trigger also includes: A rewinding spring is disposed on the other side of the transmission belt and fixed to the rotating reel of the turntable, and the rewinding spring is used to reset the transmission belt.

5. The protection device according to any one of claims 1 to 4, characterized in that: The braking device is a fixed seat fixed on one of the cross arms of the lifting bed; The trigger is fixed on the other cross arm of the lifting bed.

6. The protection device according to any one of claims 1 to 4, characterized in that: The braking device is fixed to a first position on the lifting bed; The trigger is fixed at a second position on the base of the lifting bed.

7. The protection device according to claim 6, characterized in that: The braking device includes a braking guide rail fixed on the base of the lifting bed and a braking part fixed to the lifting drive structure of the lifting bed and cooperating with the braking guide rail, the braking guide rail is provided with a groove, and the braking part includes a first pin, when the extension and retraction of the transmission belt of the trigger is locked, the first pin is pushed out and engaged in the groove.

8. The protection device according to claim 7, characterized in that: The braking device also includes a wire splitter, which is fixed on the base of the lifting bed and located between the trigger and the braking guide rail, and is used to change the extension direction of the transmission belt from the trigger so that the extended end of the transmission belt is connected to the braking part.

9. The protection device according to claim 7, characterized in that: The number of the braking rails and the number of the braking parts are respectively 2, and each braking part corresponds to a braking rail.

10. The protection device according to any one of claims 7 to 9, characterized in that: The braking part comprises: a pin fixing block having a first through hole penetrating the pin fixing block along a first direction; and A pin assembly is movable in the first through hole along the first direction, and the pin assembly includes the first pin.

11. The protection device according to claim 10, characterized in that: The pin fixing block also has a second through hole that penetrates the pin fixing block to the first through hole along a second direction; The first pin has a side hole recessed along a second direction; The braking unit also includes: A release pin passes through the second through hole and extends into the side hole of the first pin, wherein the release pin is connected to the protruding end of the transmission belt. When the extension and retraction of the transmission belt is locked, the release pin is pulled out from the first pin, and the first pin is pushed into the groove of the brake guide rail along the first direction.

12. The protection device according to claim 11, characterized in that: The pin assembly further includes a second telescopic spring located on the other side of the first pin in the first direction and a third cover located on the other side of the second telescopic spring in the first direction; When the extension and retraction of the transmission belt is locked, the release pin is pulled out from the first pin, and the first pin is inserted into the groove of the brake guide rail under the push of the second retractable spring.

13. The protection device according to claim 11, characterized in that: A pit is provided on the release pin, and the pin fixing block further has a third through hole penetrating the pin fixing block to the pit along a third direction; A release assembly for adjusting the release force of the release pin is arranged in the third through hole. When the extension and retraction of the transmission belt is locked, the release pin overcomes the force of the release assembly and is pulled out from the first pin.

14. The protection device according to claim 13, characterized in that: The release assembly comprises: a force adjustment pin, one end of which is located in the recess; A third telescopic spring, one end of which abuts against the other end of the force adjustment pin; and A force adjusting screw is provided to press the third telescopic spring from the other end of the third telescopic spring.

15. The protection device according to claim 10, characterized in that: The pin fixing block further has a fourth through hole penetrating the pin fixing block to the first through hole along the second direction, and the fourth through hole extends along the first direction; The first pin also has a handle, and the handle moves in the fourth through hole along the first direction to reset the first pin to an initial position.

16. A lifting bed, characterized in that: The lifting bed comprises the protection device according to any one of claims 1 to 15.

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