Pneumatic automatic unhooking traction seat

Abstract

The utility model relates to the technical field of traction seats, and particularly discloses a pneumatic automatic unhooking traction seat which comprises a shell, a base is rotatably arranged at the bottom end of the shell, a deflector rod extending into the shell is arranged on the side wall of the shell, a spring is connected to the end of the deflector rod, and the end, away from the deflector rod, of the spring is connected to the inner wall of the shell. A connecting rod is hinged to one end, close to the spring, of the deflector rod; a piston rod of the first air cylinder is hinged to the shifting rod, and a cylinder body of the first air cylinder is hinged to the shell. A second air cylinder is arranged below the middle of the shifting rod in a matched mode. The first air cylinder and the second air cylinder are connected with a control circuit which is used for controlling the first air cylinder and the second air cylinder to act successively. Compared with the prior art, through the arrangement of the second air cylinder, the deflector rod can be jacked up, the deflector rod is prevented from being clamped on the shell through the groove, smooth action of the deflector rod is guaranteed, and potential safety hazards are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of traction seats, and specifically discloses a pneumatic automatic decoupling traction seat. Background Art

[0002] The trailer fifth wheel or saddle is a key component on a semi-trailer, used to connect the tractor and the semi-trailer. It has the function of engaging and locking with the semi-trailer's traction pin through a locking mechanism, and can transmit horizontal and vertical forces between the semi-trailer tractor and the semi-trailer.

[0003] Container tugs need to be frequently unhooked (in the cabin and at the dock) when operating on a ro-ro passenger ship. This operation is to manually unhook the pull pin on the traction seat, which is labor-intensive and has the risk of tire blowout and vehicle damage. In order to improve work efficiency and reduce labor intensity, the patent with announcement number CN116279863B discloses an intelligent early warning automated traction seat, tractor and vehicle. When unhooking, the piston rod of the telescopic cylinder extends, driving the pull rod to move in a first direction, the pull rod drives the connecting rod to move, and the connecting rod drives the inclined iron to move in the direction of releasing the lock hook. When the piston rod of the telescopic cylinder moves to the set stop position, the limit device on the pull rod cooperates with the limit device on the shell to fix the pull rod at the current position, the inclined iron moves to the unlocking position, the first spring contracts, and the lock hook is unlocked.

[0004] In the above arrangement, a groove or boss structure is provided on the pull rod or the lever at the connection with the housing to fix the lever, which results in the lever still being fixed on the housing when the cylinder is in motion, causing poor motion and even damage to the lever or the housing, posing a safety hazard. Furthermore, the control switch of the cylinder is easily touched by mistake, which also poses a safety hazard. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, the utility model provides a pneumatic automatic unhooking traction seat to solve the problem that when the cylinder is actuated, the lever is still fixed on the shell, causing poor movement and even damage to the lever or the shell, posing a safety hazard.

[0006] To achieve the above purpose, the technical solution of the utility model is:

[0007] A pneumatic automatic unhooking traction seat includes a shell, a base is rotatably provided at the bottom end of the shell, a lever extending to the inside of the shell is provided on the side wall of the shell, a spring is connected to the end of the lever, the end of the spring away from the lever is connected to the inner wall of the shell, the lever is hinged with a connecting rod at the end close to the spring, and the end of the lever is also connected to a cylinder 1; the piston rod of the cylinder 1 is hinged on the lever, and the cylinder body of the cylinder 1 is hinged on the shell; a cylinder 2 is provided below the middle of the lever; the cylinder 1 and the cylinder 2 are both connected to a control circuit, and the control circuit is used to control the cylinder 1 and the cylinder 2 to move in sequence. Through the setting of the cylinder 2, the lever can be lifted up to prevent the lever from being stuck on the shell by the groove, thereby ensuring the smooth movement of the lever and reducing safety hazards. The control circuit controls the cylinder 2 to move first to lift the lever, and the cylinder 1 moves again to drive the lever to ensure smooth movement.

[0008] Preferably, a cross bar is provided at the end of the piston rod of the second cylinder, and the cross bar is provided along the radial direction of the second cylinder. The provision of the cross bar ensures that the second cylinder can lift the lever.

[0009] Preferably, a concave bracket is fixedly arranged on the inner wall of the housing; the cylinder body of the second cylinder is fixedly arranged on the bottom plate of the concave bracket; the piston rod of the second cylinder penetrates the bottom plate of the concave bracket and then abuts against the lever, so as to ensure the stability of the arrangement of the second cylinder.

[0010] Preferably, the control circuit includes a solenoid valve 1 connected to the cylinder 1 and a solenoid valve 2 connected to the cylinder 2; the solenoid valve 1 and the solenoid valve 2 are connected in parallel to a normally open self-reset switch 1; the normally open self-reset switch 1 is connected to the power circuit; and the solenoid valve 1 is connected in series with a delay switch. The setting of the delay switch can ensure that the cylinder 2 is actuated first and then the cylinder 1 is actuated, and ensure that the cylinder 2 first lifts the lever out of the housing.

[0011] Preferably, the normally open self-resetting switch 1 is connected in series with the normally open self-resetting switch 2. The arrangement of the normally open self-resetting switch 1 and the normally open self-resetting switch 2 can avoid the cylinder 1 and the cylinder 2 from being actuated by accidental touch, thus reducing potential safety hazards.

[0012] Preferably, normally open self-reset switch 1, normally open self-reset switch 2, solenoid valve 1 and solenoid valve 2 are connected in parallel with proximity switch 1; proximity switch 1 is connected in parallel with proximity switch 2. Proximity switch 1 and proximity switch 2 are respectively arranged at the locking and unlocking positions of the traction seat.

[0013] Preferably, both proximity switch 1 and proximity switch 2 are connected in parallel with a display light, which can be installed in the cab to facilitate operator monitoring.

[0014] The beneficial effects of the utility model are:

[0015] 1. Through the setting of cylinder 2, the lever can be lifted to prevent the lever from being stuck on the housing by the groove, ensuring the smooth movement of the lever and reducing safety hazards. The control circuit controls cylinder 2 to move first to lift the lever, and cylinder 1 moves again to drive the lever to ensure smooth movement.

[0016] 2. The setting of normally open self-reset switch 1 and normally open self-reset switch 2 can avoid accidental touch causing cylinder 1 and cylinder 2 to operate, reducing safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the utility model after the base is removed;

[0020] Figure 3 It is a schematic diagram of the principle of the control circuit of the utility model.

[0021] Description of reference numerals:

[0022] 1-housing, 2-base, 3-display light, 4-lever, 5-spring, 6-connecting rod, 7-cylinder 1, 8-cylinder 2, 9-cross bar, 10-solenoid valve 1, 11-solenoid valve 2, 12-normally open self-reset switch 1, 13-power circuit, 14-delay switch, 15-normally open self-reset switch 2, 16-proximity switch 1, 17-proximity switch 2;

[0023] 101-concave bracket; 401-groove. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0025] like Figure 1-2As shown, a pneumatic automatic unhooking traction seat comprises a housing 1, a base 2 is rotatably provided at the bottom end of the housing 1, a lever 4 extending to the inside of the housing 1 is provided on the side wall of the housing 1, a groove 401 is provided at the contact point between the lever 4 and the housing 1, a spring 5 is connected to the end of the lever 4, the end of the spring 5 away from the lever 4 is connected to the inner wall of the housing 1, the lever 4 is hinged with a connecting rod 6 at the end close to the spring 5, and a cylinder 1 7 is also connected to the end of the lever 4; the piston rod of the cylinder 1 7 is hinged on the lever 4, and the cylinder body of the cylinder 1 7 is hinged on the housing 1; a cylinder 2 8 is provided at the lower middle part of the lever 4; the cylinder 1 7 and the cylinder 2 8 are both connected to a control circuit, and the control circuit is used to control the cylinder 1 7 and the cylinder 2 8 to move in sequence. Through the setting of the cylinder 2 8, the lever 4 can be lifted up to prevent the lever 4 from being stuck on the housing 1 by using the groove 401, thereby ensuring the smooth movement of the lever 4 and reducing safety hazards. The control circuit controls the cylinder 28 to move first to lift the lever 4, and the cylinder 17 then moves to drive the lever 4 to ensure smooth movement. A crossbar 9 is provided at the end of the piston rod of the cylinder 28; the crossbar 9 is provided along the radial direction of the cylinder 28. The provision of the crossbar 9 ensures that the cylinder 28 can lift the lever 4. A concave bracket 101 is fixedly provided on the inner wall of the housing 1; the cylinder body of the cylinder 28 is fixedly provided on the bottom plate of the concave bracket 101; the piston rod of the cylinder 28 penetrates the bottom plate of the concave bracket 101 and then contacts the lever 4. Ensure that the setting of the cylinder 28 is stable.

[0026] like Figure 3 As shown, the control circuit includes a solenoid valve 10 connected to cylinder 17 and a solenoid valve 2 11 connected to cylinder 2 8; the solenoid valve 10 and the solenoid valve 2 11 are connected in parallel to a normally open self-reset switch 12; the normally open self-reset switch 12 is connected to a power supply circuit 13; and the solenoid valve 10 is connected in series with a delay switch 14. The setting of the delay switch 14 can ensure that cylinder 2 8 acts first and then cylinder 17, and ensure that cylinder 2 8 first lifts the lever 4 out of the housing. The normally open self-reset switch 12 is connected in series with a normally open self-reset switch 2 15. The setting of the normally open self-reset switch 12 and the normally open self-reset switch 2 15 can avoid accidental touch causing the cylinder 1 7 and cylinder 2 8 to act, thereby reducing safety hazards. The normally open self-reset switch 12, the normally open self-reset switch 2 15, the solenoid valve 10 and the solenoid valve 2 11 are connected in parallel with a proximity switch 16; the proximity switch 16 is connected in parallel with a proximity switch 2 17. The proximity switch 16 and the proximity switch 2 17 are respectively arranged at the locking and unlocking positions of the traction seat, which belongs to the prior art and will not be described in detail here. The proximity switch 1 16 and the proximity switch 2 17 are both connected in parallel with the display light 3. The display light 3 can be installed in the cab for easy monitoring by the operator.

[0027] Although the utility model is described in detail by referring to the accompanying drawings and in combination with the preferred embodiments, the utility model is not limited thereto. Without departing from the spirit and essence of the utility model, a person of ordinary skill in the art may make various equivalent modifications or substitutions to the embodiments of the utility model, and these modifications or substitutions shall be within the scope of the utility model / any person of ordinary skill in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the utility model, and they shall be within the scope of protection of the utility model. Therefore, the scope of protection of the utility model shall be based on the scope of protection of the claims.

Claims

1. A pneumatic automatic unhooking traction seat, comprising a housing (1), a base (2) rotatably provided at the bottom end of the housing (1), a lever (4) extending into the interior of the housing (1) provided on the side wall of the housing (1), a spring (5) connected to the end of the lever (4), an end of the spring (5) away from the lever (4) connected to the inner wall of the housing (1), and a connecting rod (6) hingedly connected to the end of the lever (4) close to the spring (5), characterized in that: The end of the lever (4) is also connected to a cylinder 1 (7); the piston rod of the cylinder 1 (7) is hinged on the lever (4), and the cylinder body of the cylinder 1 (7) is hingedly arranged on the housing (1); a cylinder 2 (8) is arranged in cooperation with the lower middle portion of the lever (4); the cylinder 1 (7) and the cylinder 2 (8) are both connected to a control circuit, and the control circuit is used to control the cylinder 1 (7) and the cylinder 2 (8) to move in sequence.

2. The pneumatic automatic unhooking fifth wheel according to claim 1, characterized in that: A cross bar (9) is arranged at the end of the piston rod of the second cylinder (8); the cross bar (9) is arranged along the radial direction of the second cylinder (8).

3. The pneumatic automatic unhooking fifth wheel according to claim 1, characterized in that: A concave bracket (101) is fixedly arranged on the inner wall of the housing (1); the cylinder body of the second cylinder (8) is fixedly arranged on the bottom plate of the concave bracket (101); and the piston rod of the second cylinder (8) penetrates the bottom plate of the concave bracket (101) and then abuts against the lever (4).

4. The pneumatic automatic unhooking fifth wheel according to claim 1, characterized in that: The control circuit comprises a solenoid valve 1 (10) connected to the cylinder 1 (7) and a solenoid valve 2 (11) connected to the cylinder 2 (8); the solenoid valve 1 (10) and the solenoid valve 2 (11) are connected in parallel to a normally open self-resetting switch 1 (12); the normally open self-resetting switch 1 (12) is connected to a power supply circuit (13); and the solenoid valve 1 (10) is connected in series to a delay switch (14).

5. The pneumatic automatic unhooking fifth wheel according to claim 4, characterized in that: The normally open self-resetting switch 1 (12) is connected in series with the normally open self-resetting switch 2 (15).

6. The pneumatic automatic unhooking fifth wheel according to claim 5, characterized in that: A normally open self-resetting switch 1 (12), a normally open self-resetting switch 2 (15), a solenoid valve 1 (10) and a solenoid valve 2 (11) are connected in parallel with a proximity switch 1 (16); and a proximity switch 2 (17) is connected in parallel with the proximity switch 1 (16).

7. The pneumatic automatic unhooking fifth wheel according to claim 6, characterized in that: The proximity switch 1 (16) and the proximity switch 2 (17) are both connected in parallel with a display light (3).

Images