Combined type pressure maintaining and releasing structure for negative pressure type climbing suction cup

Abstract

The utility model belongs to the technical field of negative pressure suction cups, and particularly relates to a combined type pressure maintaining and releasing structure for a negative pressure type climbing suction cup, the pressure maintaining and releasing structure is divided into two states during use, during pressure maintaining, a trigger component drives a control component to be disconnected, at the moment, the control component is disconnected with a power component, and the power component is connected with the negative pressure type climbing suction cup. The first pressure relief hole is sealed through the pressure relief and pressure maintaining component, meanwhile, the pressure relief and pressure maintaining component is prevented from moving through the arrangement of the limiting component, the first pressure relief hole is always in a sealed state, pressure relief of the negative pressure suction cup caused by mistaken touch of workers is avoided, and the safety of the workers is guaranteed. During pressure relief, the triggering component drives the control component to be closed, the control component is connected with the power component, meanwhile, the limiting component does not stop the pressure relief and pressure maintaining component from moving any more, the control component controls the power component to move so that the first pressure relief holes can be opened, pressure relief is completed, the multiple first pressure relief holes are formed, the pressure relief speed is high, and the climbing operation time is shortened.

Description

TECHNICAL FIELD

[0001] The utility model belongs to negative pressure sucking disc technical field especially relates to a compound pressure maintaining and pressure releasing structure for negative pressure type climbing sucking disc. BACKGROUND

[0002] The negative pressure type climbing sucking disc has the characteristics of strong adsorption force and wide environmental applicability, is less limited by wall surface materials, and is suitable for materials such as glass, metal and wood.

[0003] The negative pressure of the negative pressure type climbing sucking disc is mainly generated by a vacuum pump or a fan, and the sucking disc is adsorbed on the surface of an object through a low-pressure area inside the sucking disc, so that firm adhesion is realized.

[0004] To ensure the safety of climbing operation and shorten the time of climbing operation, a compound pressure maintaining and pressure releasing structure for negative pressure type climbing sucking disc is provided. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a compound pressure maintaining and pressure releasing structure for negative pressure type climbing sucking disc to solve the above problems.

[0006] To achieve the above object, the utility model provides the following scheme:

[0007] A compound pressure maintaining and pressure releasing structure for negative pressure type climbing sucking disc, comprising: a valve body fixedly installed on the negative pressure sucking disc, a plurality of first pressure releasing holes are formed in the valve body, a pressure releasing and maintaining member is arranged on the valve body, the pressure releasing and maintaining member is arranged in correspondence with the first pressure releasing holes, the pressure releasing and maintaining member is drivingly connected with a power member, the pressure releasing and maintaining member is used to close / open the first pressure releasing holes, the power member is electrically connected with a control member, a trigger member is arranged on the valve body, the trigger member is drivingly connected with the control member, and a limiting member is arranged between the pressure releasing and maintaining member and the trigger member.

[0008] When releasing pressure, the trigger member drives the control member to close, and the power member drives the pressure releasing and maintaining member to release pressure.

[0009] When maintaining pressure, the trigger member drives the control member to disconnect, the limiting member limits the movement of the pressure releasing and maintaining member, and the pressure releasing and maintaining member maintains pressure.

[0010] In the utility model, the valve body is provided with a mounting cavity, a plurality of first pressure relief holes are arranged on the bottom of the mounting cavity, the first pressure relief holes are arranged at equal intervals in the circumferential direction, a plurality of annular grooves are arranged on the bottom of the mounting cavity, the annular grooves and the first pressure relief holes are arranged one by one in correspondence, and a sealing ring is arranged in the annular grooves.

[0011] In the utility model, the pressure relief and pressure maintaining component comprises a valve, the valve is arranged in the mounting cavity, a plurality of second pressure relief holes are arranged on the valve at equal intervals in the circumferential direction, the second pressure relief holes and the first pressure relief holes are arranged one by one in correspondence and are matched, the distance between two adjacent first pressure relief holes is greater than the diameter of the second pressure relief hole, the valve is in abutment with the sealing ring, the side of the valve extending out of the mounting cavity is in abutment with an end cover, and the end cover is fixedly connected with the valve body.

[0012] In the utility model, the trigger component comprises a track fixed to one side of the valve body, one end of the track is fixedly connected with two third protrusions, the two third protrusions are symmetrically arranged, a hinged block is slidably connected between the two third protrusions, the hinged block is detachably connected with the control component, a hinged groove is arranged on the hinged block in a penetrating manner, and the two third protrusions respectively extend into the hinged groove.

[0013] One end of the hinged block is fixedly connected with a safety pull rod, the safety pull rod is arranged on the track, one end of the safety pull rod away from the hinged block is slidably connected in a limiting block, the limiting block is fixedly connected on the track, and one end of the safety pull rod penetrating out of the limiting block is connected with a traction component.

[0014] The outer side of the safety pull rod is sleeved with a spring, and the two ends of the spring are in abutment with the hinged block and the limiting block respectively.

[0015] In the utility model, the limiting component comprises a second connecting rod, one end of the second connecting rod is hinged in the hinged groove, the other end of the second connecting rod is hingedly connected with one end of a first connecting rod, the other end of the first connecting rod is rotatably connected on the valve body and is fixedly connected with a second protrusion, a first protrusion is fixedly connected on the valve, and the first protrusion is arranged in correspondence with the second protrusion.

[0016] In the utility model, the power component comprises a mounting frame fixed on the end cover, a steering engine is fixed on the mounting frame, a connecting seat is coaxially fixed on the output shaft of the steering engine, and the connecting seat is coaxially fixed on the valve.

[0017] In the composite pressure maintaining and pressure releasing structure for the negative pressure type climbing suction cup, the control member comprises a control switch fixed on the valve body, a control end of the control switch is arranged in correspondence with the hinge block, and the control switch is electrically connected with the rudder machine and the pressure releasing button.

[0018] In the composite pressure maintaining and pressure releasing structure for the negative pressure type climbing suction cup, one end of the safety pull rod extending out of the limiting block is provided with a threaded section, a traction joint is threadedly connected with the threaded section, and the traction joint is connected with the traction member.

[0019] In the composite pressure maintaining and pressure releasing structure for the negative pressure type climbing suction cup, a step is arranged on the safety pull rod, the diameter of the step is greater than that of the safety pull rod, and the step cooperates with the limiting block to limit the maximum stroke of the safety pull rod.

[0020] Compared with the prior art, the utility model has the advantages and technical effects that:

[0021] The pressure maintaining and pressure releasing structure is used in two states, when maintaining pressure, the trigger member drives the control member to disconnect, at this time, the control member is disconnected with the power member, the pressure maintaining and pressure releasing member makes the first pressure releasing hole closed, and the setting of the limiting member prevents the pressure maintaining and pressure releasing member from moving, so that the first pressure releasing hole is always in a closed state, the staff is prevented from causing the negative pressure suction cup to release pressure due to mistaken touch, and the safety of the staff is ensured.

[0022] When releasing pressure, the trigger member drives the control member to close, the control member is connected with the power member, the limiting member no longer prevents the pressure maintaining and pressure releasing member from moving, the control member controls the power member to move to open the first pressure releasing hole, the pressure is released, the first pressure releasing hole is provided with a plurality of pressure releasing holes, the pressure releasing speed is fast, and the climbing operation time is shortened. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments, and obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can obtain other drawings according to these drawings without paying creative labor:

[0024] Fig. 1 It is the installation schematic view of the utility model;

[0025] Fig. 2 It is the structure schematic view of the utility model;

[0026] Fig. 3 It is the state view when the utility model releases pressure;

[0027] Fig. 4 The state diagram when the utility model keeps pressure;

[0028] Wherein, 1, negative pressure sucking disc; 2, valve body; 3, first pressure relief hole; 4, third protrusion; 5, annular groove; 6, installation cavity; 7, track; 8, limit block; 9, traction joint; 10, valve; 11, second pressure relief hole; 12, first protrusion; 13, connecting seat; 14, end cover; 15, mounting bracket; 16, steering engine; 17, control switch; 18, first connecting rod; 19, safety pull rod; 20, threaded section; 21, spring; 22, step; 23, second connecting rod; 24, hinged block; 25, hinged groove; 26, second protrusion; 27, sealing ring. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0030] In order to make the above-mentioned purposes, features and advantages of the utility model more apparent, obvious and easy to understand, the utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0031] With reference to Figs. 1 to 4 The utility model discloses a composite pressure keeping and pressure releasing structure for negative pressure type climbing sucking disc, include: valve body 2, fixed mounting is on negative pressure sucking disc 1, be provided with a plurality of first pressure relief hole 3 on valve body 2, valve body 2 is provided with pressure relief pressure keeping component, pressure relief pressure keeping component is correspondingly set with first pressure relief hole 3, pressure relief pressure keeping component drive connection has power component, pressure relief pressure keeping component is used to close / open first pressure relief hole 3, power component electric connection has control component, valve body 2 is provided with trigger component, trigger component and control component drive connection, pressure relief pressure keeping component and trigger component between setting has limit component;

[0032] When releasing pressure, trigger component drives control component to close, and power component drives pressure relief pressure keeping component to release pressure.

[0033] When keeping pressure, trigger component drives control component to disconnect, limit component limits the movement of pressure relief pressure keeping component, and pressure relief pressure keeping component keeps pressure.

[0034] The pressure maintaining and pressure releasing structure is divided into two states during use, when maintaining pressure, the trigger component drives the control component to disconnect, at this time, the control component is disconnected with the power component, the pressure maintaining and releasing component makes the first pressure releasing hole 3 closed, and the setting of the limiting component prevents the pressure maintaining and releasing component from moving, so that the first pressure releasing hole 3 is always in a closed state, the staff is prevented from being caused to touch the negative pressure sucker 1 by mistake to release pressure, and the safety of the staff is ensured;

[0035] When releasing pressure, the trigger component drives the control component to close, the control component is connected with the power component, meanwhile, the limiting component no longer prevents the pressure maintaining and releasing component from moving, the control component controls the power component to move to open the first pressure releasing hole 3, pressure releasing is completed, and the first pressure releasing hole 3 is provided with a plurality of first pressure releasing holes, the pressure releasing speed is fast, and the time of climbing operation is shortened.

[0036] In an alternative scheme, the valve body 2 is provided with a mounting cavity 6, a plurality of first pressure releasing holes 3 are arranged on the cavity bottom of the mounting cavity 6, the plurality of first pressure releasing holes 3 are arranged at equal intervals in the circumferential direction, the cavity bottom of the mounting cavity 6 is provided with a plurality of annular grooves 5, the plurality of annular grooves 5 are arranged in one-to-one correspondence with the plurality of first pressure releasing holes 3, and the annular grooves 5 are provided with sealing rings 27.

[0037] In an alternative scheme, the pressure maintaining and releasing component comprises a valve 10, the valve 10 is arranged in the mounting cavity 6, a plurality of second pressure releasing holes 11 are arranged at equal intervals in the circumferential direction on the valve 10, the plurality of second pressure releasing holes 11 are arranged in one-to-one correspondence with and are matched with the plurality of first pressure releasing holes 3, the distance between the two adjacent first pressure releasing holes 3 is greater than the diameter of the second pressure releasing hole 11, the valve 10 is in abutment with the sealing ring 27, one side of the valve 10 extending out of the mounting cavity 6 is in abutment with an end cover 14, and the end cover 14 is fixedly connected with the valve body 2.

[0038] The valve 10 is in abutment with the sealing ring 27 under the pressure of the end cover 14, so that the sealing effect during pressure maintaining is ensured;

[0039] The second pressure releasing hole 11 has the same inner diameter as the first pressure releasing hole 3;

[0040] In an alternative scheme, the trigger component comprises a track 7 fixed to one side of the valve body 2, two third protrusions 4 are fixed to one end of the track 7, the two third protrusions 4 are symmetrically arranged along the axis of the track 7, a hinged block 24 is slidably connected between the two third protrusions 4, the hinged block 24 is detachably connected with the control component, a hinged groove 25 penetrating through the hinged block 24 is arranged, and the two third protrusions 4 respectively extend into the hinged groove 25;

[0041] The two third protrusions 4 respectively extend into the hinged groove 25, so that the hinged block 24 can only move along the length direction of the track 7, and the stability of movement is ensured;

[0042] One end of the hinged block 24 is fixedly connected with a safety pull rod 19, the safety pull rod 19 is arranged on the track 7, one end of the safety pull rod 19 away from the hinged block 24 is slidingly connected in a limiting block 8, the limiting block 8 is fixedly connected with the track 7, and one end of the safety pull rod 19 penetrating out of the limiting block 8 is connected with a traction member;

[0043] The traction member is used for exerting a pulling force on the safety pull rod 19, so that the safety pull rod 19 cannot move in the pressure maintaining state, and the negative pressure suction cup 1 always maintains the negative pressure state; and the traction member can be selected by a person skilled in the art according to actual needs.

[0044] The safety pull rod 19 is externally sleeved with a spring 21, and the two ends of the spring 21 are respectively abutted with the hinged block 24 and the limiting block 8.

[0045] The spring 21 is used for automatically resetting the safety pull rod 19 when the safety pull rod 19 is disconnected with the traction member.

[0046] In an optional scheme, the limiting member comprises a second connecting rod 23, one end of the second connecting rod 23 is hinged in a hinged groove 25, the other end of the second connecting rod 23 is hinged with one end of a first connecting rod 18, the other end of the first connecting rod 18 is rotationally connected with the valve body 2 and is fixedly connected with a second protrusion 26, a first protrusion 12 is fixedly connected with the valve 10, and the first protrusion 12 is correspondingly arranged with the second protrusion 26.

[0047] The safety pull rod 19 is connected with the traction member, at this time, the hinged block 24 is separated from the control end of the control switch 17, the control switch 17 is disconnected, and simultaneously the safety pull rod 19 drives the first connecting rod 18 to rotate through the second connecting rod 23, the movement of the first connecting rod 18 makes the second protrusion 26 connected with the first protrusion 12, the valve 10 is limited, and the rudder 16 is prevented from driving the valve 10 to rotate to release pressure and cause danger;

[0048] The safety pull rod 19 is disconnected with the traction member, the spring 21 automatically resets the safety pull rod 19, at this time, the hinged block 24 is in contact with the control end of the control switch 17, the control switch 17 is closed, the pressure release button is connected with the rudder 16, simultaneously the safety pull rod 19 drives the first connecting rod 18 to rotate through the second connecting rod 23, the movement of the first connecting rod 18 makes the second protrusion 26 separated from the first protrusion 12, the limitation on the valve 10 is released, and the pressure release button controls the movement of the rudder 16, so that the first pressure release hole 3 is opened.

[0049] In an optional scheme, the power member comprises a mounting frame 15 fixedly connected with the end cover 14, the mounting frame 15 is fixedly connected with the rudder 16, the output shaft of the rudder 16 is coaxially fixedly connected with a connecting seat 13, and the connecting seat 13 is coaxially fixedly connected with the valve 10.

[0050] The valve 10 is driven to rotate by the rudder 16, so that the first pressure release hole 3 is closed / opened.

[0051] In an alternative, the control member comprises a control switch 17 fixed on the valve body 2, the control end of the control switch 17 is arranged corresponding to the hinge block 24, and the control switch 17 is electrically connected with the steering engine 16 and the pressure relief button.

[0052] When the control switch 17 is closed, the pressure relief button is connected with the steering engine 16, and the pressure relief button controls the movement of the steering engine 16; when the control switch 17 is opened, the pressure relief button is disconnected with the steering engine 16, and the pressure relief button cannot control the movement of the steering engine 16.

[0053] In an alternative, the end of the safety pull rod 19 extending out of the limiting block 8 is provided with a threaded section 20, and the threaded section 20 is threadedly connected with a traction connector 9, and the traction connector 9 is connected with the traction member.

[0054] The traction connector 9 is used to connect the safety pull rod 19 with the traction member.

[0055] In an alternative, the safety pull rod 19 is provided with a step 22, the diameter of the step 22 is larger than that of the safety pull rod 19, and the step 22 cooperates with the limiting block 8 to limit the maximum stroke of the safety pull rod 19.

[0056] The safety pull rod 19 is provided with the step 22, the diameter of the step 22 is larger than that of the safety pull rod 19, and the step 22 is arranged to limit the safety pull rod 19, and the traction connector 9 is arranged to limit the safety pull rod 19, and the step 22 cooperates with the traction connector 9 and the limiting block 8 to make the safety pull rod 19 always move within a set range, so that the structure of the utility model is prevented from being invalid due to too large movement range.

[0057] Meanwhile, the length of the safety pull rod 19 screwed into the limiting block 8 can be adjusted to adjust the stroke of the safety pull rod 19 rebounding.

[0058] Working state:

[0059] Pressure maintaining: the safety pull rod 19 is connected with the traction member through the traction connector 9, at this time, the step 22 abuts against the limiting block 8, the hinge block 24 is separated from the control end of the control switch 17, the control switch 17 is opened, and meanwhile, the safety pull rod 19 drives the first connecting rod 18 to rotate through the second connecting rod 23, the movement of the first connecting rod 18 makes the second protrusion 26 connected with the first protrusion 12, the valve 10 is limited, and the valve 10 is prevented from rotating to release pressure due to the failure of the steering engine 16, and danger is avoided;

[0060] Pressure relief: the traction joint 9 is disconnected with the traction member, the spring 21 makes the safety pull rod 19 automatically reset, at this time the hinge block 24 is in contact with the control end of the control switch 17, the control switch 17 is closed, the pressure relief button is connected with the steering gear 16, and the safety pull rod 19 drives the first connecting rod 18 to rotate through the second connecting rod 23, the movement of the first connecting rod 18 makes the second protrusion 26 separate from the first protrusion 12, and the limiting on the valve 10 is released; the pressure relief button controls the movement of the steering gear 16, the first pressure relief hole 3 is opened, and pressure relief is carried out.

[0061] In the description of the present application, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the present application.

[0062] The above-described embodiments are only preferred modes of the present application, and do not limit the scope of the present application, and various modifications and improvements to the technical solutions of the present application made by those skilled in the art without departing from the design spirit of the present application should fall within the protection scope of the present application.

Claims

1. A composite pressure maintaining and releasing structure for a negative pressure type climbing suction cup, characterized by, The utility model relates to a valve body (2) is fixedly installed on negative pressure sucking disc (1), a plurality of first pressure release holes (3) are seted up on the valve body (2), pressure relief pressure maintaining member is provided on the valve body (2), and the pressure relief pressure maintaining member is seted up with the first pressure release hole (3) correspondingly, power component is transmission connection with the pressure relief pressure maintaining member, the pressure relief pressure maintaining member is used for closing / opening the first pressure release hole (3), and control member is electrically connected with the power component, trigger member is seted up on the valve body (2), and the trigger member is transmission connection with the control member, and the limit component is seted up between the pressure relief pressure maintaining member and the trigger member. When pressure relief, the trigger member drives the control member to close, and the power component drives the pressure relief pressure maintaining member to carry out pressure relief. When pressure maintaining, the trigger member drives the control member to disconnect, the limit component limits the movement of the pressure relief pressure maintaining member, and the pressure relief pressure maintaining member carries out pressure maintaining. A plurality of first pressure release holes (3) are seted up in the cavity bottom of the mounting cavity (6), and a plurality of first pressure release holes (3) are circumferentially equidistantly arranged, a plurality of annular grooves (5) are seted up in the cavity bottom of the mounting cavity (6), a plurality of annular grooves (5) are seted up one by one with a plurality of first pressure release holes (3), and a sealing ring (27) is arranged in the annular groove (5).

2. The composite pressure maintaining and releasing structure for the negative pressure type climbing suction cup according to claim 1, characterized in that: The pressure relief pressure maintaining member includes a valve (10), the valve (10) is arranged in the mounting cavity (6), a plurality of second pressure release holes (11) are circumferentially equidistantly seted up on the valve (10), a plurality of second pressure release holes (11) are seted up one by one with a plurality of first pressure release holes (3) and are matched, the distance between adjacent two first pressure release holes (3) is greater than the diameter of the second pressure release hole (11), the valve (10) abuts against the sealing ring (27), and the valve (10) abuts against an end cover (14) on one side of the mounting cavity (6).

3. The composite pressure maintaining and releasing structure for the negative pressure type climbing suction cup according to claim 2, characterized in that: The trigger member includes a track (7) fixed to one side of the valve body (2), one end of the track (7) is fixedly connected with two third protrusions (4), the two third protrusions (4) are symmetrically arranged, a hinged block (24) is slidably connected between the two third protrusions (4), the hinged block (24) is detachably connected with the control member, a hinged groove (25) is seted up in the hinged block (24), and the two third protrusions (4) respectively extend into the hinged groove (25).

4. The composite pressure maintaining and releasing structure for the negative pressure type climbing suction cup according to claim 3, characterized in that: One end of the hinged block (24) is fixedly connected with a safety pull rod (19), the safety pull rod (19) is arranged on the track (7), one end of the safety pull rod (19) away from the hinged block (24) is slidably connected in a limiting block (8), the limiting block (8) is fixedly connected on the track (7), and one end of the safety pull rod (19) penetrating through the limiting block (8) is connected with a traction member. ​ The outer side of the safety pull rod (19) is sleeved with a spring (21), and the two ends of the spring (21) are respectively in abutment with the hinge block (24) and the limiting block (8).

5. The composite pressure maintaining and releasing structure for the negative pressure type climbing suction cup according to claim 4, characterized in that: The limiting member comprises a second connecting rod (23), one end of the second connecting rod (23) is hinged in the hinge groove (25), the other end of the second connecting rod (23) is hinged with one end of a first connecting rod (18), the other end of the first connecting rod (18) is rotationally connected on the valve body (2) and is fixedly connected with a second protrusion (26), a first protrusion (12) is fixedly connected on the valve (10), and the first protrusion (12) is correspondingly arranged with the second protrusion (26).

6. The composite pressure maintaining and releasing structure for the negative pressure type climbing suction cup according to claim 4, characterized in that: The power member comprises a mounting frame (15) fixedly connected on the end cover (14), a steering engine (16) is fixedly connected on the mounting frame (15), a connecting seat (13) is coaxially fixedly connected on an output shaft of the steering engine (16), and the connecting seat (13) is coaxially fixedly connected on the valve (10).

7. The composite pressure maintaining and releasing structure for the negative pressure type climbing suction cup according to claim 6, characterized in that: The control member comprises a control switch (17) fixedly connected on the valve body (2), a control end of the control switch (17) is correspondingly arranged with the hinge block (24), and the control switch (17) is electrically connected with the steering engine (16) and a pressure relief button.

8. The composite pressure maintaining and releasing structure for the negative pressure type climbing suction cup according to claim 4, characterized in that: One end of the safety pull rod (19) extending out of the limiting block (8) is provided with a threaded section (20), the threaded section (20) is threadedly connected with a traction connector (9), and the traction connector (9) is connected with the traction member.

9. The composite pressure maintaining and releasing structure for the negative pressure type climbing suction cup according to claim 4, characterized in that: A step (22) is arranged on the safety pull rod (19), the diameter of the step (22) is greater than that of the safety pull rod (19), and the step (22) cooperates with the limiting block (8) to limit the maximum stroke of the safety pull rod (19). The outer side of the safety pull rod (19) is sleeved with a spring (21), and the two ends of the spring (21) are respectively in abutment with the hinge block (24) and the limiting block (8).

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