Pressure relay dismounting device

Abstract

The utility model provides a pressure relay disassembling and assembling device which comprises a pedestal, a limiting block used for bearing a pressure relay and a pressing mechanism used for pressing a valve cover in the pressure relay, and the pressing mechanism and the limiting block are respectively arranged on the pedestal. The downward pressing mechanism comprises a vertical support with the bottom end arranged on the pedestal, a shell arranged at the top end of the vertical support, a lifting rod arranged in the shell in a lifting mode and a driving assembly used for driving the lifting rod, and the bottom end of the lifting rod is detachably pressed on a valve deck of the pressure relay. According to the pressure relay dismounting device provided by the utility model, the position of the pressure relay is limited through the limiting groove I in the bottom plate and the accommodating groove and the limiting groove II in the limiting block, and the valve cover is driven by the limiting sleeve on the lifting rod to descend to compress the spring, so that the valve cover is attached to the pressure relay; bolt penetration difficulty caused by bounce of the valve cover is avoided, and the valve cover is more convenient, reliable, safe and rapid to install.

Description

TECHNICAL FIELD

[0001] The utility model relates to relay dismounting technical field, concretely relates to pressure relay dismounting device. BACKGROUND

[0002] Pressure relay is the main element for realizing the automatic on-off function of antiskid device power supply, and is installed on the vehicle brake pipe. When the brake pipe air pressure reaches the required value, the diaphragm plate piston moves up, the micro switch is pushed by the piston top rod, the normally open contact is closed, the normally closed contact is opened, the main machine power supply is connected through the internal circuit of the main machine. When the brake pipe air pressure is lower than the spring adjustment elastic force, the micro switch returns to the original state, the normally open contact is opened, the normally closed contact is closed, the timing circuit inside the main machine is triggered, and the main machine power supply is cut off after a certain time. Figure 3 When installing the pressure relay, the valve cover 51 needs to be pressed manually, the spring 53 is overcome by the top rod 52, the valve cover 51 is attached to the pressure relay 5 body, and then the connection is achieved by penetrating and tightening the bolt.

[0003] However, due to the large spring force in the pressure relay, it is not only time-consuming and laborious, but also poor in safety when multiple people manually install or dismount the valve cover on the pressure relay body, and the technical problem is solved. UTILITY MODEL CONTENT

[0004] In view of the defects of the prior art, the utility model provides a pressure relay dismounting device, which limits the position of the pressure relay through the limiting groove one of the bottom plate, the accommodating groove on the limiting block and the limiting groove two, drives the valve cover to descend through the limiting sleeve on the lifting rod, and presses the spring, so that the valve cover is attached to the pressure relay, the bolt penetration difficulty caused by the valve cover springing up is avoided, the installation of the valve cover is more convenient and reliable, safe and fast.

[0005] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: a pressure relay dismounting device, comprising a pedestal, a limiting block for bearing the pressure relay, a pressing mechanism for pressing the valve cover in the pressure relay, the pressing mechanism and the limiting block are arranged on the pedestal respectively;

[0006] The pressing mechanism comprises a vertical support arranged at the bottom end of the pedestal, a shell arranged at the top end of the vertical support, a lifting rod arranged in the shell and capable of lifting, and a driving assembly for driving the lifting rod, and the bottom end of the lifting rod is detachably pressed on the valve cover of the pressure relay.

[0007] The side of the lifting rod is provided with a gear slot, the driving assembly comprises a driven gear rotatably arranged in the shell, a driving gear meshing with the driven gear, and an operating rod coaxially connected with the driving gear, and the driven gear is meshed with the gear slot.

[0008] The shell is provided with a locking assembly separably connected with the driving assembly, the locking assembly comprising a ratchet coaxially arranged with the driving gear, and a pawl separably connected with the ratchet.

[0009] The shell is provided with a sliding block, the pawl is swingingly arranged on the sliding block, a reset spring is arranged between one end of the pawl and the sliding block, and the other end of the pawl is separably connected with the ratchet.

[0010] The top side of the shell is vertically provided with a guide rod, the lifting rod is provided with a connecting block, and the connecting block is slidingly sleeved on the outside of the guide rod.

[0011] The base is provided with a limiting block, the top of the limiting block is provided with a containing groove for containing the pressure relay, the side of the limiting block is provided with an avoiding groove one for containing the center column of the pressure relay, and the base is provided with an avoiding groove two corresponding to the avoiding groove.

[0012] The bottom end of the lifting rod is provided with a limiting sleeve, the side of the limiting sleeve is provided with a locking bolt for fixing the valve cover, and the small head of the locking bolt is provided with a protective pad block in contact with the valve cover.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] (1) The position of the pressure relay is limited through the limiting groove one of the base, the containing groove on the limiting block and the limiting groove two, the valve cover is lowered through the limiting sleeve on the lifting rod to compress the spring, so that the valve cover is attached to the pressure relay, the bolt is prevented from being difficult to penetrate due to the springing of the valve cover, and the valve cover is more convenient, reliable, safe and fast to install.

[0015] (2) The lifting rod is locked through the combination of the ratchet and the pawl, the lifting rod is prevented from being freely lifted, the pawl is separated from the ratchet through the sliding block, the locking of the lifting rod is released, the lifting of the lifting rod is more stable and reliable, and the connecting block is slidingly arranged on the guide rod, so that the stability of the operation of the lifting rod is further improved.

[0016] (3) The external thread of the valve cover is protected through the protective pad block of the locking bolt, so that the fixation of the valve cover by the limiting sleeve is more stable and reliable. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the overall structure schematic view of the utility model;

[0018] Figure 2 is the structure schematic view of the limiting block of the utility model;

[0019] Figure 3 is the structural exploded view of the pressure relay;

[0020] Figure 4 is the structural schematic view of the driving assembly of the utility model;

[0021] Figure 5 is the structural schematic view of the locking assembly of the utility model.

[0022] In the drawing, 1, pedestal; 11, bottom plate; 111, avoiding groove two; 2, limiting block; 21, containing groove; 22, avoiding groove one; 3, pressing mechanism; 31, vertical support; 32, shell; 33, lifting rod; 331, gear slot; 34, driving assembly; 341, driven gear; 342, driving gear; 343, operating rod; 35, locking assembly; 351, ratchet wheel; 352, pawl; 36, sliding block; 361, return spring; 37, guide rod; 38, connecting block; 39, limiting sleeve; 4, locking bolt; 41, protection pad; 5, pressure relay; 51, valve cover; 52, jacking rod; 53, spring; 54, vertical column; 55, external thread. DETAILED DESCRIPTION

[0023] In order to make the technical features of the scheme more clearly, the scheme will be described below through specific embodiments.

[0024] Referring to Figures 1-5 , the pressure relay dismounting device comprises a pedestal 1, further comprises a limiting block 2 for bearing the pressure relay 5, a pressing mechanism 3 for pressing the valve cover 51 in the pressure relay 5, the pressing mechanism 3 and the limiting block 2 are respectively arranged on the pedestal 1.

[0025] The pressing mechanism 3 comprises a vertical support 31 arranged at the bottom end of the pedestal 1, a shell 32 arranged at the top end of the vertical support 31, a lifting rod 33 arranged in the shell 32 in a lifting manner, and a driving assembly 34 for driving the lifting rod 33, the bottom end of the lifting rod 33 is detachably pressed on the valve cover 51 of the pressure relay 5.

[0026] The side of the lifting rod 33 is provided with a gear slot 331, the driving assembly 34 comprises a driven gear 341 rotatably arranged in the shell 32, a driving gear 342 engaged with the driven gear 341, and an operating rod 343 coaxially connected with the driving gear 342, the driven gear 341 is engaged with the gear slot 331.

[0027] The shell 32 is provided with a locking assembly 35 detachably connected with the driving assembly 34, the locking assembly 35 comprises a ratchet wheel 351 coaxially arranged with the driving gear 342 and a pawl 352 detachably connected with the ratchet wheel 351.

[0028] The slider 36 is arranged on the shell 32 in sliding mode, the pawl 352 is arranged on the slider 36 in swinging mode, the reset spring 361 is arranged between one end of the pawl 352 and the slider 36, and the other end of the pawl 352 is detachably connected with the ratchet wheel 351.

[0029] The guide rod 37 is vertically arranged on the top side of the shell 32, and the connecting block 38 is arranged on the lifting rod 33 and is sleeved on the outer side of the guide rod 37 in sliding mode.

[0030] The base plate 11 is arranged on the pedestal 1, the limiting block 2 is arranged on the base plate 11, the top of the limiting block 2 is provided with the accommodating groove 21 for accommodating the pressure relay 5, the side of the limiting block 2 is provided with the avoiding groove one 22 for accommodating the vertical column 54 of the pressure relay 5, and the base plate 11 is provided with the avoiding groove two 111 corresponding to the avoiding groove.

[0031] The bottom end of the lifting rod 33 is provided with the limiting sleeve 39, the side of the limiting sleeve 39 is provided with the locking bolt 4 for fixing the valve cover 51, the small head of the locking bolt 4 is provided with the protective pad 41 in contact with the valve cover 51, specifically, the protective pad 41 is extruded and fixed with the external thread 55 on the valve cover 51, and the protective pad 41 is made of plastic or rubber material and is used for protecting the external thread 55 on the valve cover 51.

[0032] The specific working process of the utility model is as follows:

[0033] When the device is used, the pressure relay 5 is placed in the accommodating groove 21 of the limiting block 2, the vertical column 54 passes through the avoiding groove one 22 and the avoiding groove two 111, then the valve cover 51 of the pressure relay 5 is combined with the limiting sleeve 39, specifically, the external thread 55 of the valve cover 51 is inserted into the limiting sleeve 39, the locking bolt 4 is screwed, the protective pad 41 on the locking bolt 4 extrudes and limits the external thread 55, and the fixing of the valve cover 51 is completed.

[0034] The spring 53 and the top rod 52 are sequentially arranged in the pressure relay 5, then the operating rod 343 is rotated by hand, the operating rod 343 drives the driven gear 341 to rotate through the driving gear 342, the driven gear 341 drives the lifting rod 33 to descend through the gear groove 331, the lifting rod 33 drives the valve cover 51 to descend through the limiting sleeve 39, the valve cover 51 presses the top rod 52 downward against the elastic force of the spring 53, until the valve cover 51 is attached to the end of the pressure relay 5, then the operating rod 343 can be loosened, the ratchet wheel 351 and the pawl 352 are locked due to the meshing effect under the action of the elastic force of the reset spring 361, the operating rod 343 does not swing, so that the lifting rod 33 is still in the descending state and the valve cover 51 is pressed tightly, and the bolts are sequentially inserted into the valve cover 51 and the pressure relay 5 and are tightened and installed.

[0035] After the installation of the pressure relay 5, loosen the locking bolt 4, release the valve cover 51, slightly swing the hand-held operating rod 343 and press down, so that the force between the ratchet wheel 351 and the pawl 352 becomes smaller, then slide the sliding block 36, so that the pawl 352 is separated from the ratchet wheel 351, then the operating rod 343 can be lifted, so that the limiting sleeve 39 is separated from the pressure relay 5, finally the installed pressure relay 5 is removed.

[0036] The dismounting process of the pressure relay 5 is opposite to the installation process, the valve cover 51 is extruded and limited by the limiting sleeve 39, so that the elastic force of the spring 53 on the valve cover 51 is avoided, thereby the bolt dismounting is more quick and safe.

[0037] The position of the pressure relay 5 is limited through the limiting groove one of the bottom plate 11, the accommodating groove 21 on the limiting block 2 and the limiting groove two, the valve cover 51 is driven to descend by the limiting sleeve 39 on the lifting rod 33, so that the spring 53 is pressed tightly, the valve cover 51 is attached to the pressure relay 5, the valve cover 51 is installed more conveniently and reliably, safely and quickly, and the bolt is prevented from penetrating into the valve cover 51 difficultly.

[0038] The lifting rod 33 is locked through the combination of the ratchet wheel 351 and the pawl 352, the lifting rod 33 is prevented from rising freely, the pawl 352 is separated from the ratchet wheel 351 through the sliding block 36, so that the locking on the lifting rod 33 is released, the lifting of the lifting rod 33 is more stable and reliable, the connecting block 38 is slidably arranged on the guide rod 37, and the stability of the lifting rod 33 is further improved.

[0039] The outer thread 55 of the valve cover 51 is protected by the protection pad 41 of the locking bolt 4, so that the fixing of the limiting sleeve 39 on the valve cover 51 is more stable and reliable.

[0040] The technical features not described in the utility model can be realized through or by the prior art, and will not be repeated here, of course, the above description is not a limitation of the utility model, the utility model is not limited to the above examples, the changes, modifications, additions or replacements made by the ordinary skilled in the art within the essential scope of the utility model should also belong to the protection scope of the utility model.

Claims

1. Pressure relay dismounting device, comprising a seat (1), characterized in that, Also include a limit block (2) for bearing the pressure relay (5), a pressing mechanism (3) for pressing the valve cover (51) in the pressure relay (5), the pressing mechanism (3) and the limit block (2) are respectively arranged on the pedestal (1); The pressing mechanism (3) comprises a vertical support (31) arranged at the bottom of the pedestal (1), a shell (32) arranged at the top of the vertical support (31), a lifting rod (33) arranged in the shell (32) and capable of lifting, a driving assembly (34) for driving the lifting rod (33), and the bottom end of the lifting rod (33) is detachably pressed on the valve cover (51) of the pressure relay (5).

2. The pressure relay dismounting device according to claim 1, characterized in that The side of the lifting rod (33) is provided with a gear slot (331), the driving assembly (34) comprises a driven gear (341) rotatably arranged in the shell (32), a driving gear (342) engaged with the driven gear (341), and an operating rod (343) coaxially connected with the driving gear (342), and the driven gear (341) is engaged with the gear slot (331).

3. The pressure relay dismounting device according to claim 2, characterized in that The shell (32) is provided with a locking assembly (35) detachably connected with the driving assembly (34), the locking assembly (35) comprises a ratchet wheel (351) coaxially arranged with the driving gear (342), and a pawl (352) detachably connected with the ratchet wheel (351).

4. The pressure relay dismounting device according to claim 3, characterized in that The shell (32) is provided with a sliding block (36), the pawl (352) is swingingly arranged on the sliding block (36), a reset spring (361) is arranged between one end of the pawl (352) and the sliding block (36), and the other end of the pawl (352) is detachably connected with the ratchet wheel (351).

5. The pressure relay dismounting device according to claim 2, characterized in that The top side of the shell (32) is vertically provided with a guide rod (37), the lifting rod (33) is provided with a connecting block (38), and the connecting block (38) is slidingly sleeved on the outside of the guide rod (37).

6. The pressure relay dismounting device according to claim 1, characterized in that The pedestal (1) is provided with a bottom plate (11), the limit block (2) is arranged on the bottom plate (11), the top of the limit block (2) is provided with a containing groove (21) for containing the pressure relay (5), the side of the limit block (2) is provided with an avoidance groove one (22) for containing the vertical column (54) in the pressure relay (5), and the bottom plate (11) is provided with an avoidance groove two (111) corresponding to the avoidance groove.

7. The pressure relay dismounting device according to claim 1, characterized in that The bottom end of the lifting rod (33) is provided with a limiting sleeve (39), the side of the limiting sleeve (39) is provided with a locking bolt (4) for fixing the valve cover (51), and the small head of the locking bolt (4) is provided with a protective pad (41) in contact with the valve cover (51).

Images